UNITY FIRST ACQUISITION CORP
S-4/A, 1999-06-15
PREPACKAGED SOFTWARE
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<PAGE>

     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 15, 1999


                                                      REGISTRATION NO. 333-76333
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------


                                AMENDMENT NO. 2
                                       TO
                                    FORM S-4


                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                           --------------------------

                         UNITY FIRST ACQUISITION CORP.
             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                                       <C>                                       <C>
                DELAWARE                                    6770                                   13-3899021
    (State or other jurisdiction of             (Primary Standard Industrial                    (I.R.S. Employer
     incorporation or organization)             Classification Code Number)                  Identification Number)
</TABLE>

                            ------------------------

                          245 FIFTH AVENUE, SUITE 1500
                            NEW YORK, NEW YORK 10016
                                 (212) 696-4282
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                         ------------------------------

                          LAWRENCE BURSTEIN, PRESIDENT
                         UNITY FIRST ACQUISITION CORP.
                          245 FIFTH AVENUE, SUITE 1500
                            NEW YORK, NEW YORK 10016
                                 (212) 696-4282
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)
                         ------------------------------

                                   COPIES TO:

         IRA I. ROXLAND, ESQ.                       CURTIS L. MO, ESQ.
       JOSEPH H. SCHMITT, ESQ.                 JONATHAN P. SHANBERGE, ESQ.
      COOPERMAN LEVITT WINIKOFF                    PAUL L. SIEBEN, ESQ.
        LESTER & NEWMAN, P.C.                BROBECK, PHLEGER & HARRISON LLP
           800 THIRD AVENUE                       TWO EMBARCADERO PLACE
       NEW YORK, NEW YORK 10022                       2200 GENG ROAD
            (212) 688-7000                     PALO ALTO, CALIFORNIA 94303
         FAX: (212) 755-2839                          (650) 424-0160
                                                   FAX: (650) 496-2885

                                            (SEE CALCULATION TABLE ON NEXT PAGE)

    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this registration statement and the
effective time of the merger of GraphOn with and into the registrant.

    If any of the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /

    If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. / /

    If this form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / /

                           --------------------------


    PURSUANT TO RULE 429, PROMULGATED UNDER THE SECURITIES ACT OF 1933, THE
PROSPECTUS FORMING A PART OF THIS REGISTRATION STATEMENT ALSO RELATES TO (I)(A)
1,250,000 SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE OF 1,250,000 CLASS A
REDEEMABLE COMMON STOCK PURCHASE WARRANTS AND (B) 1,250,000 SHARES OF COMMON
STOCK ISSUABLE UPON THE EXERCISE OF 1,250,000 CLASS B REDEEMABLE COMMON STOCK
PURCHASE WARRANTS (COLLECTIVELY, THE "IPO SECURITIES"), (II)(A) 125,000 SHARES
OF COMMON STOCK, (B) 125,000 SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE
OF 125,000 CLASS A COMMON STOCK PURCHASE WARRANTS AND (C) 125,000 SHARES OF
COMMON STOCK ISSUABLE UPON THE EXERCISE OF 125,000 CLASS B COMMON STOCK PURCHASE
WARRANTS ALL ISSUABLE TO THE MANAGING UNDERWRITERS OF THE IPO SECURITIES UPON
THE EXERCISE OF THE UNDERWRITERS' UNIT PURCHASE OPTION, AND (III)(A) 200,000
SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE OF 200,000 CLASS A COMMON
STOCK PURCHASE WARRANTS AND (B) 200,000 SHARES OF COMMON STOCK ISSUABLE UPON THE
EXERCISE OF 200,000 CLASS B COMMON STOCK PURCHASE WARRANTS ISSUED TO OFFICERS
AND DIRECTORS OF REGISTRANT, ALL INITIALLY INCLUDED IN THE REGISTRANT'S
REGISTRATION STATEMENT ON FORM S-1 (FILE NO. 333-11165) DECLARED EFFECTIVE ON
DECEMBER 12, 1996.


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                        CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
                                                                           PROPOSED MAXIMUM      PROPOSED MAXIMUM
       TITLE OF EACH CLASS OF SECURITIES              AMOUNT TO BE          OFFERING PRICE          AGGREGATE
                TO BE REGISTERED                       REGISTERED              PER SHARE          OFFERING PRICE
<S>                                               <C>                    <C>                    <C>
Common Stock, $.0001 par value..................  9,086,961 shares(1)                N/A            $6,513,070(2)
Common Stock, $.0001 par value..................  876,790 shares(3)            $    1.79            $1,569,454
Common Stock, $.0001 par value..................  250,000 shares(4)            $    5.50            $1,375,000
    Total.......................................                                     N/A            $9,457,524

<CAPTION>

       TITLE OF EACH CLASS OF SECURITIES               AMOUNT OF
                TO BE REGISTERED                   REGISTRATION FEE
<S>                                               <C>
Common Stock, $.0001 par value..................       $1,810.64
Common Stock, $.0001 par value..................       $  436.31
Common Stock, $.0001 par value..................       $  382.25
    Total.......................................       $2,629.20(5)
</TABLE>

(1) Reflects the maximum number of shares of registrant's common stock to be
    issued pursuant to the merger in exchange for GraphOn's common stock on the
    basis of 0.5576 shares of registrant's common stock for each share of
    GraphOn's common stock.

(2) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(f)(2). Since there is no current market for GraphOn's
    common stock, market value was based on the book value per share of
    GraphOn's common stock at December 31, 1998 multiplied by 16,363,959, the
    number of shares of GraphOn's common stock being acquired by the registrant
    as of April 15, 1999.

(3) Reflects the maximum number of shares of registrant's common stock issuable
    upon exercise of GraphOn's warrants that will be assumed by registrant
    pursuant to the merger on the basis of 0.5576 shares of registrant's common
    stock for each share of GraphOn's common stock.

(4) Reflects 250,000 shares of Unity common stock issuable upon exercise of the
    Class A redeemable common stock purchase warrants.

(5) Previously paid.
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                                245 FIFTH AVENUE
                            NEW YORK, NEW YORK 10016

                            ------------------------

                   NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                          TO BE HELD ON JUNE   , 1999

                            ------------------------

    NOTICE IS HEREBY GIVEN that a special meeting of stockholders of Unity First
Acquisition Corp., a Delaware corporation, will be held on June   , 1999,
commencing at 10:00 A.M., local time, at 800 Third Avenue, 30th Floor, New York,
New York, for the following purposes:

    1.  To consider and vote upon, as a single proposal, the following
amendments to Unity's certificate of incorporation:

    - To delete provisions in the certificate of incorporation that prevent the
      amendment of other provisions prior to consummation of a merger or similar
      business combination;

    - To delete the provision which called for the liquidation of Unity and the
      distribution of its net assets to stockholders by January 11, 1999 if
      Unity had not consummated a merger or other business combination by
      November 12, 1998; and

    - To add a provision that, in the event Unity does not consummate the merger
      with GraphOn Corporation, a California corporation, by July 31, 1999,
      Unity will be liquidated and its net assets distributed to its public
      stockholders no later than September 29, 1999.

    2.  To consider and vote upon a proposal to approve and adopt an agreement
and plan of merger and reorganization, dated as of February 1, 1999, as amended
as of June 1, 1999, between Unity and GraphOn providing for, among other things,
the merger of GraphOn with and into Unity, and the issuance by Unity of
approximately 9,086,961 shares of its common stock to GraphOn's shareholders,
all upon the terms and conditions described in the merger agreement. A vote in
favor of the merger of GraphOn with and into Unity will also constitute approval
of Unity's assumption of the GraphOn 1998 Stock Option/Stock Issuance Plan and
all of the outstanding options issued under such plan and of the amended and
restated certificate of incorporation of Unity which will be adopted upon
consummation of the merger if the merger is approved.

    3.  To approve an adjournment or postponement of the special meeting, if
necessary, to permit further solicitation of proxies in the event there are not
sufficient votes at the special meeting to approve proposals 1 and 2, above.

    4.  To transact any other business incidental to the special meeting that
may properly come before such meeting or any adjournment or postponement of such
meeting.

    Copies of the proposed amendment to Unity's certificate of incorporation,
the merger agreement and the proposed amended and restated certificate of
incorporation of Unity to be adopted upon consummation of the merger are
attached as Exhibits A, B and C to the accompanying joint proxy
statement/prospectus. STOCKHOLDER APPROVAL AND ADOPTION OF THE MERGER AGREEMENT
AND THE ISSUANCE OF UNITY COMMON STOCK WILL RESULT IN A CHANGE OF THE MAJORITY
EQUITY OWNERSHIP, THE BUSINESS AND THE MANAGEMENT OF UNITY.

    June   , 1999 is the record date for the determination of stockholders
entitled to notice of and to vote at the special meeting. The affirmative vote
of the holders of a majority of all outstanding shares of Unity common stock
entitled to vote at the special meeting is necessary to approve and adopt the
merger agreement and the changes to Unity's certificate of incorporation.

    HOLDERS OF UNITY COMMON STOCK ARE ENTITLED TO APPRAISAL RIGHTS UNDER
DELAWARE LAW IN CONNECTION WITH THE MERGER. HOLDERS OF UNITY COMMON STOCK ARE
ALSO ENTITLED TO CASH CONVERSION RIGHTS PURSUANT TO UNITY'S CERTIFICATE OF
INCORPORATION. If 20% or more of the public shares of Unity common stock are
offered to Unity for conversion into cash and the holders of such shares vote
against the approval and adoption of the merger agreement, the merger will not
be consummated.
<PAGE>
    Whether or not you plan to attend the special meeting, please complete, date
and sign the accompanying proxy card and mail it promptly in the enclosed
pre-addressed envelope, which requires no postage if mailed in the United
States. The proxy card may be revoked at any time prior to the vote at the
special meeting by following the procedures set forth in this joint proxy
statement/prospectus.

                                        Norman Leben
                                        SECRETARY

June   , 1999
<PAGE>
                              GRAPHON CORPORATION
                              150 HARRISON AVENUE
                           CAMPBELL, CALIFORNIA 95008
                                 (408) 370-4080
                            ------------------------

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                          TO BE HELD ON JUNE   , 1999
                            ------------------------

    NOTICE IS HEREBY GIVEN that a special meeting of shareholders of GraphOn
Corporation, a California corporation, will be held on June   , 1999, commencing
at 10:00 A.M., local time, at 150 Harrison Avenue, Campbell, California, for the
following purposes:

    1.  To consider and vote upon a proposal to approve and adopt an agreement
       and plan of merger and reorganization, dated as of February 1, 1999, as
       amended as of June 1, 1999, between Unity First Acquisition Corp., a
       Delaware corporation, and GraphOn, providing for, among other things, the
       merger of GraphOn with and into Unity upon the terms and conditions
       described in the merger agreement. A vote in favor of the merger of
       GraphOn with and into Unity also will constitute approval of Unity's
       assumption of the GraphOn 1998 Stock Option/ Stock Issuance Plan and all
       of the outstanding options issued under such plan and of the amended and
       restated certificate of incorporation of Unity which will be adopted upon
       consummation of the merger if the merger is approved.

    2.  To approve an adjournment or postponement of the special meeting, if
       necessary, to permit further solicitation of proxies in the event there
       are not sufficient votes at the special meeting to approve proposal 1,
       above.

    3.  To transact any other business incidental to the special meeting that
       may properly come before such meeting or any adjournment or postponement
       of the special meeting.

    A copy of the merger agreement is attached as Exhibit B to the accompanying
joint proxy statement/prospectus. Shareholder approval and adoption of the
merger agreement means that GraphOn will cease to exist and all of its
shareholders will become stockholders of Unity, Unity will change its name to
"GraphOn Corporation" and its business, management and board of directors will
be identical to those of GraphOn prior to the merger, except that Lawrence
Burstein will be added to the board of directors of the surviving corporation.
GraphOn has determined that the merger will constitute an "initial public
offering" within the meaning of contracts by and between GraphOn and its
shareholders who purchased shares pursuant to its private placement of common
stock in 1998 and early 1999. Accordingly, if the merger is completed, such
shareholders of GraphOn no longer will be entitled to preemptive and information
rights received in connection with their original purchases of GraphOn common
stock. See "Description of GraphOn's Securities--Preemptive Rights" and
"--Information Rights."

    June   , 1999 is the record date for the determination of shareholders
entitled to notice of and to vote at the special meeting. The affirmative vote
of the holders of a majority of all outstanding shares of GraphOn common stock
entitled to vote at the special meeting is necessary to approve and adopt the
merger agreement.

    Holders of GraphOn common stock are entitled to dissenters' rights under
California law in connection with the merger.

 Whether or not you plan to attend the special meeting, please complete, date
 and sign the accompanying proxy card and mail it promptly in the enclosed
 pre-addressed envelope, which requires no postage if mailed in the United
 States. The proxy card may be revoked at any time prior to the vote at the
 special meeting by following the procedures set forth in this joint proxy
 statement/prospectus.

                                          Thomas A. Bevilacqua

                                          SECRETARY

June   , 1999
<PAGE>

                                                                   June 15, 1999


To the Stockholders of each of
  Unity First Acquisition Corp. and GraphOn Corporation:

    The Boards of Directors of Unity First Acquisition Corp. and GraphOn
Corporation have agreed to merge these two companies. In the merger, GraphOn
shareholders will receive 0.5576 of a share of Unity common stock for each share
of GraphOn common stock that they own. Upon completion of the merger, the
GraphOn shareholders will own approximately 82.9% of the combined company and
the Unity stockholders will own approximately 17.1% of the combined company.
Unity is currently a shell company with no operating business and was formed for
the purpose of acquiring another company. Unity common stock is publicly-traded
on the OTC Bulletin Board.

    The merger cannot be completed unless the holders of Unity common stock and
GraphOn common stock approve the matters described in this document. The Boards
of Directors of the companies have unanimously approved the merger and recommend
that stockholders approve the matters described in this document at the special
meetings described below.

    If these matters are not approved or, notwithstanding such approvals, the
merger is not completed by July 31, 1999, Unity will be liquidated and its net
assets of approximately $5.28 per share will be mailed to its public
stockholders no later than August   , 1999.


    Unity stockholders should take note of the fact that the terms of Unity's
initial public offering required Unity to liquidate by November 12, 1998 if
Unity had not consummated a merger by that date. In the event of liquidation,
Unity was required to make a per share cash distribution by January 11, 1999.
This may be construed as a contractual commitment by Unity to the persons who
acquired their Unity shares either in the initial public offering or
subsequently in the public market. Unity's failure to liquidate and make this
per share payment may be viewed as a breach of this contractual commitment.


    YOUR VOTE IS VERY IMPORTANT.  Whether or not you plan to attend your special
meeting, please take the time to vote by completing and mailing the enclosed
proxy card.

    You may vote at your special meeting if you own shares as of the close of
business on June   , 1999. The dates, times and places of the special meetings
are stated in the Notice of Special Meeting of Stockholders for Unity and the
Notice of Special Meeting of Shareholders for GraphOn.

    This joint proxy statement/prospectus provides you with detailed information
about the proposed merger. Unity provided the information concerning Unity.
GraphOn provided the information concerning GraphOn. Please see "Where You Can
Find More Information" on page 87 for additional information on Unity and
GraphOn.

    WE STRONGLY URGE YOU TO READ AND CONSIDER CAREFULLY THIS JOINT PROXY
STATEMENT/PROSPECTUS IN ITS ENTIRETY, INCLUDING THE MATTERS REFERRED TO UNDER
"RISK FACTORS" BEGINNING AT PAGE XIII.

<TABLE>
<S>                         <C>                    <C>
Norman Leben, Secretary     Walter Keller,
Unity First Acquisition     President
Corp                        GraphOn Corporation
</TABLE>

    NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THE SECURITIES TO BE ISSUED PURSUANT
TO THIS JOINT PROXY STATEMENT/PROSPECTUS OR DETERMINED IF THIS JOINT PROXY
STATEMENT/PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

    We are first mailing this joint proxy statement/prospectus dated June   ,
1999 on or about June   , 1999.
<PAGE>
                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>

JOINT PROXY STATEMENT/PROSPECTUS SUMMARY...................................................................          I

  The Companies............................................................................................          i
  The Special Meetings.....................................................................................         ii
  Record Dates for Voting..................................................................................         ii
  Voting...................................................................................................         ii
  The Charter Amendment....................................................................................        iii
  The Amended and Restated Certificate of Incorporation....................................................        iii
  What You Will Receive in the Merger......................................................................         iv
  What Will Happen if the Merger is Not Approved...........................................................         iv
  Board Recommendations....................................................................................         iv
  Interests of Certain Persons in the Merger...............................................................          v
  Possible Disadvantages of the Merger.....................................................................          v
  Directors and Management of Unity Following the Merger...................................................         vi
  Assumption of GraphOn Stock Option/Stock Issuance Plan...................................................         vi
  Conditions to the Merger.................................................................................         vi
  Termination of the Merger Agreement......................................................................         vi
  Regulatory Approval......................................................................................        vii
  Appraisal Rights.........................................................................................        vii
  Tax Consequences of the Merger...........................................................................        vii
  Accounting Treatment.....................................................................................       viii
  Exchange of Stock Certificates...........................................................................       viii

SUMMARY HISTORICAL FINANCIAL INFORMATION...................................................................         IX

SUMMARY PRO FORMA FINANCIAL INFORMATION....................................................................         XI

COMPARATIVE PER SHARE INFORMATION..........................................................................        XII

RISK FACTORS...............................................................................................       XIII

TRADEMARKS.................................................................................................       XXII

DILUTION...................................................................................................       XXII

INTRODUCTION...............................................................................................          1

SOLICITATION OF PROXIES....................................................................................          1

THE UNITY SPECIAL MEETING..................................................................................          1

  Purposes of Meeting......................................................................................          1
  Date, Time and Place; Record Date........................................................................          2
  Voting Rights............................................................................................          2

THE GRAPHON SPECIAL MEETING................................................................................          3
  Purposes of Meeting......................................................................................          3
  Date, Time and Place; Record Date........................................................................          3
  Voting Rights............................................................................................          4

THE CHARTER AMENDMENT......................................................................................          4

THE MERGER.................................................................................................          5
  General..................................................................................................          5
  Amended and Restated Certificate of Incorporation........................................................          6
  Exchange Ratio...........................................................................................          8
  Unity Exchange Options...................................................................................          9
  Unity Merger Warrants....................................................................................          9
  Class A Redeemable Common Stock Purchase Warrants........................................................          9
  Closing; Effective Time..................................................................................          9
  Exchange of Stock Certificates...........................................................................         10
  No Fractional Shares.....................................................................................         10
  Background of the Merger.................................................................................         10
  Recommendations of the Boards of Directors and Reasons for the Merger....................................         15
  Interests of Certain Persons in the Merger...............................................................         16
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
  Tax Consequences of the Merger...........................................................................         17
  The Merger Agreement.....................................................................................         17
  Absence of Regulatory Filings and Approvals..............................................................         22
  Restrictions on Sales by Affiliates and Other Shareholders...............................................         22
  Accounting Treatment.....................................................................................         22
  Expenses.................................................................................................         22
  Conversion Rights........................................................................................         22
  Appraisal Rights.........................................................................................         24
  Operations after the Merger..............................................................................         28

PRICE RANGES OF SECURITIES.................................................................................         29
  Unity....................................................................................................         29
  GraphOn..................................................................................................         29

SELECTED HISTORICAL FINANCIAL DATA OF GRAPHON..............................................................         30

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS OF GRAPHON...........         31
  Overview.................................................................................................         31
  Three Months Ended March 31, 1999 Versus Three Months Ended March 31, 1998...............................         32
  Year Ended December 31, 1998 Versus Year Ended December 31, 1997.........................................         33
  Year Ended December 31, 1997 Versus Year Ended December 31, 1996.........................................         34
  Liquidity and Capital Resources..........................................................................         34
  Year 2000 Compliance.....................................................................................         35
  Quantitative and Qualitative Disclosures about Market Risk of GraphOn....................................         36
  Adoption of New Accounting Pronouncements................................................................         36
  Recently Issued Accounting Standards and Pronouncements Not Yet Adopted..................................         36

SELECTED HISTORICAL FINANCIAL DATA OF UNITY................................................................         37

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS OF UNITY.............         38

GRAPHON AND UNITY PRO FORMA FINANCIAL STATEMENTS (UNAUDITED)...............................................         39
  Introduction to Pro Forma Financial Statements (Unaudited)...............................................         39
  GraphOn and Unity Pro Forma Balance Sheet As of March 31, 1999 (GraphOn) and April 30, 1999 (Unity)
    (Unaudited)............................................................................................         40
  GraphOn and Unity Pro Forma Statement of Operations For the Years Ended December 31, 1998 (GraphOn) and
    January 31, 1999 (Unity) (Unaudited)...................................................................         41
  GraphOn and Unity Pro Forma Statement of Operations For the Three Months Ended March 31, 1999 (GraphOn)
    and April 30, 1999 (Unity) (Unaudited).................................................................         42
  Notes to Pro Forma Financial Statements (Unaudited)......................................................         43
BUSINESS OF GRAPHON........................................................................................         45
  GraphOn..................................................................................................         45
  Industry Background......................................................................................         45
  The GraphOn Approach.....................................................................................         46
  Products.................................................................................................         48
  Target Markets...........................................................................................         48
  Strategic Relationships..................................................................................         49
  Sales, Marketing and Support.............................................................................         51
  Research and Development.................................................................................         51
  Operations...............................................................................................         52
  Competition..............................................................................................         52
  Proprietary Technology...................................................................................         52
  Employees and Facilities.................................................................................         53
  Legal Proceedings........................................................................................         53

MANAGEMENT OF GRAPHON......................................................................................         54
  General..................................................................................................         54
  GraphOn Board and Committees.............................................................................         56
  Executive Compensation and Employment Agreements.........................................................         57
  1998 Stock Option/Stock Issuance Plan....................................................................         58
</TABLE>

<PAGE>
<TABLE>
<CAPTION>
                                                                                                               PAGE
                                                                                                             ---------
<S>                                                                                                          <C>
CERTAIN RELATIONSHIPS AND TRANSACTIONS.....................................................................         60

PRINCIPAL SHAREHOLDERS OF GRAPHON..........................................................................         62

DESCRIPTION OF GRAPHON'S SECURITIES........................................................................         65
  General..................................................................................................         65
  Common Stock.............................................................................................         65
  Preferred Stock..........................................................................................         65
  Dividends................................................................................................         65
  Preemptive Rights........................................................................................         66
  Spencer Trask Warrants and Similar Warrants..............................................................         66
  Corel Warrant and Similar Warrant........................................................................         66
  Registration Rights......................................................................................         67
  Shares Eligible for Future Sale..........................................................................         68
  Information Rights.......................................................................................         69
  Transfer Agent...........................................................................................         70

BUSINESS OF UNITY..........................................................................................         70

MANAGEMENT OF UNITY........................................................................................         70
  Prior to the Merger......................................................................................         70
  Stock Option Plan........................................................................................         71
  After the Merger.........................................................................................         72

PRINCIPAL STOCKHOLDERS OF UNITY............................................................................         73

DESCRIPTION OF UNITY'S SECURITIES..........................................................................         75

  General..................................................................................................         75
  Common Stock.............................................................................................         75
  Preferred Stock..........................................................................................         75
  Dividends................................................................................................         75
  Transfer Agent...........................................................................................         75
  IPO Warrants.............................................................................................         76
  Underwriters' IPO Securities.............................................................................         77
  Directors' Warrants......................................................................................         77

COMPARISON OF RIGHTS OF HOLDERS OF UNITY COMMON STOCK AND GRAPHON COMMON STOCK.............................         78
  General..................................................................................................         78
  Application of the General Corporation Law of California to Delaware Corporations........................         86
  Comparison of Proposed Amended and Restated Certificate of Incorporation and Bylaws of Unity and Articles
    of Incorporation and Bylaws of GraphOn.................................................................         86

LEGAL MATTERS..............................................................................................         87

EXPERTS....................................................................................................         87

WHERE YOU CAN FIND MORE INFORMATION........................................................................         87

INDEX TO FINANCIAL STATEMENTS..............................................................................        F-1

EXHIBITS
  Excerpts from Restated Certificate of Incorporation of Unity First Acquisition Corp......................        A-1
  Agreement and Plan of Merger and Reorganization, as amended..............................................        B-1
  Amended and Restated Certificate of Incorporation of Unity...............................................        C-1
  Section 262 of the Delaware General Corporation Law......................................................        D-1
  Sections 1300-1312 of the California Corporations Code...................................................        E-1
</TABLE>

<PAGE>
    No person has been authorized by Unity or GraphOn to give any information or
to make any representation not contained in this joint proxy
statement/prospectus in connection with the solicitation of proxies or the
offering of securities made pursuant to this joint proxy statement/prospectus
and, if given or made, such information or representation must not be relied
upon as having been authorized by Unity or GraphOn. This joint proxy
statement/prospectus does not constitute an offer to sell or a solicitation of
an offer to buy the securities offered by this joint proxy statement/prospectus
or a solicitation of a proxy in any jurisdiction where, or to any person to
whom, it would be unlawful to make such an offer or solicitation.

    Neither the delivery of this joint proxy statement/prospectus nor any
distribution of the securities to which this joint proxy statement/prospectus
relates shall, under any circumstances, create an implication that there has
been no change in the information contained in this joint proxy
statement/prospectus since the date of this joint proxy statement/prospectus.
<PAGE>
                    JOINT PROXY STATEMENT/PROSPECTUS SUMMARY

    This summary highlights selected information from this document and may not
contain all of the information that is important to you. To understand the
amendments to the Unity certificate of incorporation (the "charter amendment"),
the merger and the amended and restated certificate of incorporation fully and
for a more complete description of their legal terms, you should carefully read
this entire document and the documents to which we have referred you. See "Where
You Can Find More Information." The charter amendment, the merger agreement and
amended and restated certificate of incorporation are attached as Exhibits A, B
and C to this joint proxy statement/prospectus. We encourage you to read these
attachments. They are the legal documents that govern the merger.

THE COMPANIES

    UNITY FIRST ACQUISITION CORP.

    245 Fifth Avenue

    New York, New York 10016

    (212) 696-4282

    Unity was formed in May 1996 to serve as a vehicle to merge with an
operating business which Unity believes has significant growth potential.

    In November 1996, Unity successfully completed a public offering of units,
each consisting of one share of common stock and two common stock purchase
warrants.

    Approximately 93.8% of such offering proceeds, including interest, is
presently held in a trust account awaiting the result of the vote that you are
being asked to cast upon the proposed charter amendment. If you approve the
charter amendment and the merger, these funds will be released to Unity once the
merger is completed. The balance of such offering proceeds, now virtually
exhausted, comprise Unity's day to day working capital. If the merger is
consummated, the expenses of the merger attributable to Unity will be paid from
the offering proceeds, including proceeds that were held in the trust account.
However, the payment of these expenses is limited since $6,000,000 of the
offering proceeds, without giving effect to the exercise of any conversion
rights, must remain with Unity after payment of such expenses. If the merger is
not consummated, none of the offering proceeds held in the trust account will be
used to pay expenses of the merger.

    One of the conditions to the completion of Unity's public offering was
Unity's agreement with the underwriters of such offering that if Unity was
unable to complete a merger with a business concern by November 12, 1998, Unity
would be liquidated. Unity's board of directors has determined that the merger
is more advantageous to the Unity stockholders than liquidation, and is seeking
your approval to proceed with the merger. If Unity had been liquidated within 60
days of November 12, 1998, as provided in Unity's certificate of incorporation,
you would have received a cash distribution of approximately $5.28 per share.

    GRAPHON CORPORATION

    150 Harrison Avenue

    Campbell, California 95008

    (408) 370-4080

    GraphOn develops, markets, sells and supports server-based software for the
enterprise computing environment. Server-based computing, sometimes referred to
as thin-client computing, is a computing model where traditional desktop
software applications are relocated to run entirely on a server or host
computer. GraphOn's technology uses a small software program at each desktop,
which allows the user to interface with an application as if it were running on
the user's desktop computer. This centralized deployment and management of
applications reduces the complexity and total costs associated with enterprise
computing. In addition, the ability to access such applications over the
Internet creates new

                                       i
<PAGE>
operational models and sales channels. GraphOn provides the technology to access
applications over the Internet. GraphOn's server-based technology works on
today's most powerful personal computer or low-end network computer, without
application rewrites or changes to the corporate computing infrastructure.

    GraphOn has established strategic alliances with technology leaders such as
IBM, Sun Microsystems and Corel, who have licensed GraphOn's technology. Using
GraphOn technology, Sun Microsystems and IBM provide their network computers
access to UNIX applications. Corel currently plans to use GraphOn's technology
to provide access to some of its applications, such as WordPerfect-TM-, over the
Internet.

    GraphOn is headquartered in Campbell, California with offices in Bellevue,
Washington and Concord, New Hampshire.

THE SPECIAL MEETINGS

    UNITY STOCKHOLDERS

    There will be a special meeting of Unity stockholders at 800 Third Avenue,
30th Floor, New York, New York on June   , 1999, at 10:00 A.M., local time. At
this meeting, Unity stockholders will be asked to approve both the charter
amendment and the merger agreement.

    GRAPHON SHAREHOLDERS

    There will be a special meeting of GraphOn shareholders at 150 Harrison
Avenue, Campbell, California on June   , 1999, at 10:00 A.M., local time. At
this meeting, GraphOn shareholders will be asked to approve the merger
agreement.

RECORD DATES FOR VOTING

    UNITY STOCKHOLDERS

    The close of business on June   , 1999 was the record date for determining
which holders of Unity common stock are entitled to vote at the Unity special
meeting. At the record date, there were 1,875,000 shares of Unity common stock
entitled to vote at the Unity special meeting.

    GRAPHON SHAREHOLDERS

    The close of business on June   , 1999 was the record date for determining
which holders of GraphOn common stock are entitled to vote at the GraphOn
special meeting. At the record date, there were 16,296,559 shares of GraphOn
common stock entitled to vote at the GraphOn special meeting.

VOTING

    UNITY STOCKHOLDERS

    You will have one vote for each share of Unity common stock that you owned
on the record date. An affirmative vote of a majority of the outstanding shares
of Unity common stock is required to approve each of the charter amendment and
the merger.

    Unity stockholders who acquired Unity common stock prior to Unity's initial
public offering in November 1996 have agreed to vote such common stock,
representing approximately 33.3% of the outstanding Unity common stock, in the
same manner as the majority of those Unity stockholders who acquired their Unity
shares either in such initial public offering or at any time after such initial
public offering.

                                       ii
<PAGE>
    GRAPHON SHAREHOLDERS

    You will have one vote for each share of GraphOn common stock that you owned
on the record date. An affirmative vote of a majority of the outstanding shares
of GraphOn common stock is required to approve the merger.

    As of the record date, GraphOn's directors, executive officers and their
affiliates hold an aggregate of approximately 54.9% of the outstanding shares of
GraphOn common stock.

THE CHARTER AMENDMENT

    The proposed charter amendment:

    - deletes provisions in Unity's certificate of incorporation that prevent
      the amendment of other provisions prior to consummation of a merger or
      other business combination,

    - deletes the provision of Unity's certificate of incorporation which called
      for the liquidation of Unity and the distribution of its net assets to
      stockholders by January 11, 1999 if Unity had not consummated a merger or
      other business combination by November 12, 1998 and

    - adds a provision that, in the event Unity does not consummate the merger
      with GraphOn by July 31, 1999, Unity will be liquidated and its net assets
      distributed to its public stockholders no later than September 29, 1999.

    If the charter amendment is not approved, Unity will be liquidated. If the
charter amendment is approved but you do not approve the merger, Unity also will
be liquidated. In either such event, you would each receive a cash distribution
of approximately $5.28 per share.

THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

    Upon consummation of the merger, the Unity certificate of incorporation, as
amended, will be amended and restated entirely. The amended and restated
certificate of incorporation of Unity will contain provisions which are not
included in the current certificate of incorporation of Unity. These provisions
will:

    - prohibit stockholder actions by written consent in lieu of meetings;

    - require the approval of the holders of two-thirds of the outstanding
      shares of capital stock to amend the certificate of incorporation or
      bylaws of Unity;

    - increase the amount of authorized shares of common stock of Unity from
      20,000,000 to 45,000,000 and the authorized shares of preferred stock from
      5,000 to 5,000,000;

    - require the approval of the holders of two thirds of the outstanding
      shares of capital stock to remove a director from office;

    - allow special shareholder meetings to be called only by the board of
      directors or the holders of at least 50% of the outstanding capital stock
      of the combined company;

    - classify the board of directors into three classes, one of which is
      elected at each annual meeting of stockholders to hold office for a
      three-year term; and

    - clarify that the corporation is authorized to advance expenses to persons
      entitled to indemnity by the Corporation and provide a mechanism for such
      persons to recover on any unpaid indemnity claims.

    This is a brief summary of the material features of the amended and restated
certificate of incorporation. The text of the amended and restated certificate
of incorporation is attached to this joint proxy statement/prospectus as Exhibit
C. To understand it fully, you should carefully read the text of it.

                                      iii
<PAGE>
WHAT YOU WILL RECEIVE IN THE MERGER

    UNITY STOCKHOLDERS

    Upon completion of the merger, each share of Unity common stock that you own
will remain outstanding and will represent one share of the combined company,
which will be called "GraphOn Corporation." Unity stockholders, who currently
own 100% of Unity, will own approximately 17.1% of the combined company.
However, Unity will assume or issue in connection with the merger warrants and
options to purchase up to 1,583,185 shares of Unity common stock. If all of such
warrants and options were exercised and assuming none of Unity's warrants were
exercised, current Unity stockholders would own approximately 14.9% of the
combined company.

    Unity's certificate of incorporation provides that should you object to the
merger, you may request Unity to convert your shares of Unity common stock into
cash. The amount of cash you would be entitled to receive, approximately $5.28
per share, will be payable to you only if you vote against the merger and the
merger is completed. The steps that you must take to receive such payment are
set out in full in "The Merger-Conversion Rights."

    GRAPHON SHAREHOLDERS

    Upon completion of the merger, each share of GraphOn common stock that you
own will be cancelled. In exchange, you will receive for each such share .5576
of a share of Unity common stock. You will not receive fractional shares of
Unity common stock. Instead, you will be paid cash equal to the market value on
the merger date of any fractional shares of Unity common stock you otherwise
would have received.

    The total number of shares of Unity common stock to be issued in the merger
will be approximately 9,086,961, which would represent approximately 82.9% of
the outstanding shares of Unity common stock immediately after the completion of
the merger. However, warrants and options exercisable for up to 4,858,185 shares
of Unity common stock also will be outstanding. Thus, on a fully-diluted basis,
current GraphOn shareholders would hold shares representing only 65.9% of the
combined company.

WHAT WILL HAPPEN IF THE MERGER IS NOT APPROVED

    If the Unity stockholders do not approve the charter amendment and the
merger agreement or if the GraphOn shareholders do not approve the merger
agreement:

    - Unity will be liquidated and its net assets, which are estimated to be
      $5.28 per common share, will be distributed to its public stockholders no
      later than August   , 1999 and

    - GraphOn will need to find additional financing elsewhere and there are no
      assurances that such financing will be available on terms acceptable to
      GraphOn.

BOARD RECOMMENDATIONS

    UNITY

    The Unity board believes that a merger with GraphOn is a better alternative
than the liquidation of Unity and the distribution of its net assets to public
stockholders of Unity. The net assets are estimated to be $5.28 per common
share.

    The Unity board also took note of the fact that GraphOn satisfied, or could
be expected to satisfy prior to or upon completion of the merger, nearly all of
Unity's acquisition criteria, discussed elsewhere in this joint proxy
statement/prospectus.

                                       iv
<PAGE>
    The Unity board unanimously has determined that each of the proposed charter
amendment and the merger is in the best interests of Unity and its stockholders
and has approved both the amendment to Unity's certificate of incorporation
implementing the charter amendment and the merger agreement. The Unity board
unanimously recommends that Unity stockholders vote "FOR" both the charter
amendment and the merger.

    GRAPHON

    GraphOn's board of directors believes that the merger will enable GraphOn to
access at least $6,000,000, less a fee of up to $575,000 payable to Spencer
Trask Securities, Inc. upon consummation of the merger, of Unity's pre-merger
cash assets without the costs and market uncertainties that would be inherent in
any attempt by GraphOn to conduct a public offering of like magnitude of its own
securities. The amount of Unity's pre-merger cash assets assumes no conversions
of Unity common stock into cash.

    The GraphOn board unanimously has determined that the merger is in the best
interests of GraphOn and its shareholders and recommends that the GraphOn
shareholders vote "FOR" the merger.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    In considering the recommendation of the GraphOn and Unity boards to approve
the merger, you should be aware that GraphOn's officers and directors will
become post-merger officers and directors of Unity and that Lawrence Burstein,
the President and a director of Unity, will continue as a director of Unity
subsequent to the merger.

POSSIBLE DISADVANTAGES OF THE MERGER

    In determining whether to vote for the merger, you should understand that it
may be more economically advantageous for Unity stockholders to sell their Unity
shares or to disapprove of the merger or the charter amendment and receive cash
upon a liquidation instead of owning the shares of the combined company.

    You should also understand that there are numerous risks and uncertainties
relating to the present and proposed operations of GraphOn which may directly
impact its prospects following completion of the merger, including:

    - GraphOn has a limited operating history and has a history of operating
      losses which it expects will continue and increase;

    - GraphOn's operating results are likely to fluctuate significantly and may
      fail to meet or exceed the expectations of securities analysts or
      investors;

    - GraphOn's failure to adequately protect its proprietary rights may
      adversely affect us;

    - GraphOn's business significantly benefits from the existence of strategic
      relationships and there can be no assurance that such relationships will
      continue into the future;

    - Because GraphOn's market is new and emerging, GraphOn cannot accurately
      predict its future growth rate or its ultimate size, and widespread
      acceptance of its product is uncertain;

    - GraphOn may need additional capital in the future and may not be able to
      secure adequate funds on terms acceptable to it;

    - GraphOn relies on indirect distribution channels for its products and
      needs to continue to develop reseller relationships;

                                       v
<PAGE>
    - GraphOn's future success will depend in part upon its ability to enhance
      its existing products and to develop and introduce, on a timely basis, new
      products and features that meet changing customer requirements and
      emerging industry standards;

    - GraphOn may be required to pay additional amounts to its creditors as a
      result of its 1991 bankruptcy;

    - GraphOn's failure to manage expanding operations could adversely affect
      it;

    - The market in which GraphOn participates is highly competitive and has
      more-established competitors;

    - GraphOn's failure to be year 2000 compliant would negatively impact its
      business; and

    - The trading market for the post-merger common stock may not be active.

    There can be no assurance that Unity common stock, after the merger, will
trade at price levels in excess of the estimated $5.28 per share payable to
Unity stockholders upon liquidation of Unity if the merger were not effected.

DIRECTORS AND MANAGEMENT OF UNITY FOLLOWING THE MERGER

    In accordance with the merger agreement, three of the four current members
of the Unity board will resign immediately prior to the effective time of the
merger. Immediately following the merger, one of the current directors of Unity
and the six current directors of GraphOn will become the sole members of the
Unity board.

    Walter Keller, who presently is President of GraphOn, will be President of
Unity after the merger is completed. Additionally, all of GraphOn's other
officers will continue in a like capacity with Unity after the merger is
completed.

ASSUMPTION OF GRAPHON STOCK OPTION/STOCK ISSUANCE PLAN

    As part of the merger, Unity will assume the GraphOn 1998 Stock Option/Stock
Issuance Plan and all outstanding options under that plan. As a result, the
2,746,444 shares of GraphOn common stock currently reserved for issuance under
the plan will be converted into a reserve of 1,531,417 shares of Unity common
stock available for issuance after the merger, and the outstanding options for
approximately 818,500 shares of GraphOn common stock, as of the record date,
will be converted into options to purchase approximately 456,395 shares of the
Unity common stock reserve at exercise prices ranging from $0.13 to $5.85 per
share.

CONDITIONS TO THE MERGER

    The merger will not be completed unless a number of conditions are satisfied
or waived. These include, but are not limited to:

    - approval of the proposed charter amendment and the merger by the
      stockholders of Unity;

    - approval of the merger by the shareholders of GraphOn;

    - the absence of any injunction prohibiting the merger;

    - the absence of any material adverse change with respect to GraphOn; and

    - the absence of any material adverse change with respect to Unity.

TERMINATION OF THE MERGER AGREEMENT

    Unity and GraphOn can mutually agree to terminate the merger agreement at
any time.

                                       vi
<PAGE>
    Either of Unity or GraphOn can terminate the merger agreement if:

    - the merger is not completed by July 31, 1999; or

    - a governmental authority, such as a court, permanently prohibits the
      merger or refuses to grant an approval that is required.

    Unity can terminate the merger agreement if there is a material breach by
GraphOn of its representations or warranties in the merger agreement or GraphOn
fails to comply with or satisfy any material condition.

    GraphOn can terminate the merger agreement if there is a material breach by
Unity of its representations or warranties in the merger agreement or Unity
fails to comply with or satisfy any material condition.

    Unity is required to terminate the merger prior to the Unity special meeting
if public Unity stockholders, owning 20% or more of Unity's outstanding common
stock prior to the merger, request conversion of their shares into cash.

REGULATORY APPROVAL

    No submissions to the Antitrust Division of the Department of Justice and
the Federal Trade Commission are required of either Unity or GraphOn pursuant to
the Hart-Scott-Rodino Act.

APPRAISAL RIGHTS

    UNITY STOCKHOLDERS

    You have the right to demand appraisal of your shares and to receive an
amount that the Delaware Court of Chancery decides is the "fair value" of your
Unity shares. This amount may be more or less than the cash conversion value of
your shares. This right is known as an "appraisal right".

    If you wish to exercise your appraisal right, you must not vote in favor of
the merger and must take a series of steps, which are set out in full in Exhibit
D to this joint proxy statement/prospectus. If you exercise your appraisal
right, you will be obliged to bear your own expenses, including attorneys' fees.

    GRAPHON SHAREHOLDERS

    You have the right to demand appraisal of your shares and to receive an
amount that the California Superior Court decides is the "fair value" of your
GraphOn shares. This amount may be more or less than the value of the Unity
shares you would receive pursuant to the merger agreement. This right is known
as your "dissenter's right".

    If you wish to exercise your dissenter's right, you must not vote in favor
of the merger and must take a series of steps which are set out in full in
Exhibit E to this joint proxy statement/prospectus. If you exercise your
dissenter's right, you will be obliged to bear your own expenses, including
attorneys' fees, if a court determines that you did not act in good faith in
demanding payment of the fair value of your shares.

TAX CONSEQUENCES OF THE MERGER

    The merger has been structured so that neither Unity nor GraphOn nor our
shareholders will recognize any gain or loss for Federal income tax purposes in
the merger, except for tax payable because of cash received instead of
fractional shares by GraphOn shareholders. The merger has been conditioned on
receipt of legal opinions that such is the case.

                                      vii
<PAGE>
ACCOUNTING TREATMENT

    Unity and GraphOn expect that the merger will be accounted for as a capital
transaction equivalent to the issuance of stock by GraphOn for Unity's net
monetary assets of approximately $6,000,000, less a fee of up to $575,000
payable to Spencer Trask upon consummation of the merger. See "Certain
Relationships and Transactions."

EXCHANGE OF STOCK CERTIFICATES

    UNITY STOCKHOLDERS

    After the merger is completed, you may but will not be required to exchange
your current Unity stock certificates for new Unity stock certificates.

    GRAPHON SHAREHOLDERS

    After the merger is completed, you will be sent written instructions for
exchanging your GraphOn stock certificates for new Unity stock certificates.

                                      viii
<PAGE>
                    SUMMARY HISTORICAL FINANCIAL INFORMATION

    The following tables show financial results actually achieved by each of
GraphOn and Unity (the "historical" figures).

    GraphOn's historical figures as of and for the years ended December 31,
1998, 1997 and 1996 have been derived from GraphOn financial statements audited
by BDO Seidman, LLP and Unity's historical figures as of and for the fiscal
years ended July 31, 1998 and 1997 and the period from May 30, 1996 (inception)
to July 31, 1996, have been derived from Unity financial statements audited by
Arthur Andersen LLP.

    GraphOn's historical figures as of and for the three months ended March 31,
1999 and 1998 and as of and for the years ended December 31, 1995 and 1994 are
unaudited, but GraphOn believes that its figures reflect all normal recurring
adjustments necessary for a fair presentation of its financial position and
results of operations for those periods. You should not assume that results for
a portion of the year ending December 31, 1999 will be repeated in later
periods.


    Unity's historical figures as of and for the nine months ended April 30,
1999 and 1998 are unaudited, but Unity believes that its figures reflect all
normal recurring adjustments necessary for a fair presentation of its financial
position and results of operations for those periods. You should not assume that
results for a portion of the fiscal year ending July 31, 1999 will be repeated
in later periods.


GRAPHON

<TABLE>
<CAPTION>
                                       THREE MONTHS ENDED
                                            MARCH 31,                       FOR THE YEAR ENDED DECEMBER 31,
                                     -----------------------  -----------------------------------------------------------
                                        1999         1998        1998         1997      1996(1)     1995(1)     1994(1)
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
<S>                                  <C>          <C>         <C>          <C>         <C>         <C>         <C>
STATEMENT OF OPERATIONS DATA:
Revenues...........................  $   639,500  $  453,500  $ 2,124,200  $1,926,100  $  594,800  $  588,117  $1,096,910
Costs of Revenues..................       89,300      79,800      344,200     463,300     335,600     213,502     349,693
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
Gross Profit.......................      550,200     373,700    1,780,000   1,462,800     259,200     374,615     747,217
Operating Expenses:
  Selling and marketing............      755,600     222,000    1,440,300     827,300     192,700          --          --
  General and administrative.......    1,316,700     107,000    1,118,600     324,700     218,900     388,637     646,656
  Research and development.........      509,400     119,000      840,200     190,500      41,700      58,979      67,150
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
      Total Operating Expenses.....    2,581,700     448,000    3,399,100   1,342,500     453,300     447,616     713,806
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
(Loss) Income from Operations......   (2,031,500)    (74,300)  (1,619,100)    120,300    (194,100)    (73,001)     33,411
Other Income (Expense):
  Interest and other income........       14,900       2,500        9,800       7,200       6,400          --          --
  Interest expense.................       (6,600)    (20,000)    (521,900)     (2,100)         --          --          --
  Other expense....................           --          --      (16,500)         --          --          --          --
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
(Loss) Income before Provision for
  Income Taxes.....................   (2,023,200)    (91,800)  (2,147,700)    125,400    (187,700)    (73,001)     33,411
Provision for Income Taxes.........          800         800          800         900         800          --      15,369
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
Net (Loss) Income..................  $(2,024,000) $  (92,600) $(2,148,500) $  124,500  $ (188,500) $  (73,001) $   18,042
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
Pro forma (Loss) Income per share
  (2)..............................  $     (0.13) $    (0.01) $     (0.32) $     0.02  $    (0.03) $    (0.01) $       --
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
Weighted average common shares.....   15,779,199   6,066,667    6,762,667   6,000,000   6,000,000   6,000,000   6,000,000
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ----------  ----------  ----------
</TABLE>

                                       ix
<PAGE>

<TABLE>
<CAPTION>
                                                             MARCH 31, 1999  DECEMBER 31, 1998  DECEMBER 31, 1997
                                                             --------------  -----------------  -----------------
<S>                                                          <C>             <C>                <C>
BALANCE SHEET DATA:
Total Assets...............................................   $  6,623,500     $   7,110,500       $   733,300
Total Liabilities..........................................        933,900         1,202,200           615,100
Working Capital............................................      1,777,400         1,193,000            22,700
Shareholders' Equity.......................................      5,689,600         5,908,300           118,200
</TABLE>

- ------------------------

(1) During the years ended December 31, 1996, 1995 and 1994, GraphOn was engaged
    in the business of manufacturing, marketing and selling computer terminal
    hardware in an industry significantly different from that in which it
    presently does business. See "Management's Discussion and Analysis of
    Financial Condition and Results of Operations of GraphOn--Overview."

(2) Pro forma (Loss) Income per share is reflected as if GraphOn had been a
    public company since inception.

UNITY


<TABLE>
<CAPTION>
                                                NINE MONTHS ENDED                                PERIOD FROM
                                                    APRIL 30,          YEAR ENDED JULY 31,      MAY 30, 1996
                                             ------------------------  --------------------   (INCEPTION)(1) TO
                                                1999         1998        1998      1997(1)      JULY 31, 1996
                                             -----------  -----------  ---------  ---------  -------------------
<S>                                          <C>          <C>          <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
Revenues...................................   $      --    $      --   $      --  $      --       $      --
                                             -----------  -----------  ---------  ---------        --------
                                             -----------  -----------  ---------  ---------        --------
Net (loss) income..........................   $(226,744)   $ (35,290)  $(315,991) $   6,637       $ (15,000)
                                             -----------  -----------  ---------  ---------        --------
                                             -----------  -----------  ---------  ---------        --------
(Loss) income per common share (basic and
  diluted).................................   $   (0.12)   $   (0.02)  $   (0.17) $      --       $   (0.02)
                                             -----------  -----------  ---------  ---------        --------
                                             -----------  -----------  ---------  ---------        --------
Weighted average common shares.............   1,875,000    1,875,000   1,875,000  1,515,000         625,000
                                             -----------  -----------  ---------  ---------        --------
                                             -----------  -----------  ---------  ---------        --------
</TABLE>



<TABLE>
<CAPTION>
                                                                          JULY 31,      JULY 31,      JULY 31,
                                                       APRIL 30, 1999       1998          1997          1996
                                                       ---------------  ------------  ------------  ------------
<S>                                                    <C>              <C>           <C>           <C>
                                                         (UNAUDITED)
BALANCE SHEET DATA:
Total Assets.........................................   $   6,658,412    $6,489,903    $6,465,021    $  250,563
Total Liabilities....................................   $     807,335    $  412,082    $   71,209    $  265,500
Stockholders' Equity(2)..............................   $   4,520,140    $4,780,520    $5,154,432    $  (14,937)
</TABLE>


- ------------------------

(1) Unity was inactive during the period May 30, 1996 (inception) through
    November 19, 1996.


(2) Does not include shares subject to possible conversion at conversion value
    at April 30, 1999 and July 31, 1998.


                                       x
<PAGE>
                    SUMMARY PRO FORMA FINANCIAL INFORMATION


    The following tables show results as if the companies had been combined for
the periods shown (the "pro forma combined" figures) under the following
circumstances: (1) that no public Unity stockholders exercised their right to
have their shares converted into cash upon consummation of the merger and (2)
that 19.99% of interest in Unity common stock held by public Unity stockholders
elected to have their shares converted into cash upon consummation of the merger
at the conversion value of $5.28 per share, based on the amount held in the
Unity trust account, inclusive of interest income to date thereon, at January
31, 1999 and at April 30, 1999, with an adjustment to the pro forma statement of
operations to reflect a corresponding reduction of interest income for the
period.


    The pro forma statement of operations presented below assumes the merger
occurred on the first day of the fiscal years presented. The pro forma balance
sheet presented below assumes the merger occurred as of the balance sheet date
presented. You should not assume that GraphOn and Unity would have achieved the
combined pro forma results if they had actually been combined during the periods
shown.

PRO FORMA COMBINED STATEMENT OF OPERATIONS DATA:


<TABLE>
<CAPTION>
                                      (ASSUMING NO     (ASSUMING 19.99%      (ASSUMING NO       (ASSUMING 19.99%
                                    CASH CONVERSION)   CASH CONVERSION)    CASH CONVERSION)     CASH CONVERSION)
                                    -----------------  -----------------  -------------------  -------------------
<S>                                 <C>                <C>                <C>                  <C>
                                       YEARS ENDED        YEARS ENDED
                                    DECEMBER 31, 1998  DECEMBER 31, 1998  THREE MONTHS ENDED   THREE MONTHS ENDED
                                      (GRAPHON) AND      (GRAPHON) AND      MARCH 31, 1999       MARCH 31, 1999
                                    JANUARY 31, 1999   JANUARY 31, 1999   (GRAPHON) AND APRIL  (GRAPHON)AND APRIL
                                         (UNITY)            (UNITY)        30, 1999 (UNITY)     30, 1999 (UNITY)
                                    -----------------  -----------------  -------------------  -------------------
Total revenues....................     $ 2,124,200        $ 2,124,200         $   639,500          $   639,500
Operating expenses................       4,203,593          4,203,593           2,719,941            2,719,941
Operating loss....................      (2,079,939)        (2,079,939)         (2,080,441)          (2,080,441)
Other (expense) income............        (336,078)          (375,711)             69,532               59,550
Net loss..........................      (2,411,424)        (2,451,057)         (2,011,709)          (2,021,691)
Net loss per weighted average
  common share (basic and
  diluted)........................     $     (0.22)       $     (0.23)        $     (0.18)         $     (0.19)
Weighted average common shares
  outstanding(1)..................      10,961,961         10,712,086          10,961,961           10,712,086
</TABLE>


- ------------------------

(1) Gives effect to the issuance of approximately 9,086,961 shares of Unity
    Common Stock to the GraphOn shareholders in connection with the merger.

PRO FORMA COMBINED BALANCE SHEET DATA:


<TABLE>
<CAPTION>
                                              (ASSUMING NO CASH CONVERSION)     (ASSUMING 19.99% CASH CONVERSION)
                                            ----------------------------------  ----------------------------------
<S>                                         <C>                                 <C>
                                            AS OF MARCH 31, 1999 (GRAPHON) AND  AS OF MARCH 31, 1999 (GRAPHON) AND
                                                  APRIL 30, 1999 (UNITY)              APRIL 30, 1999 (UNITY)
                                            ----------------------------------  ----------------------------------
Working Capital...........................             $  6,395,460                        $  5,196,555
Current Assets............................                8,136,695                           6,937,790
Total Assets..............................               12,048,895                          10,849,990
Current Liabilities.......................                1,741,235                           1,741,235
Total Liabilities.........................                1,741,235                           1,741,235
Stockholders' equity......................               10,307,660                           9,108,755
</TABLE>


                                       xi
<PAGE>
                       COMPARATIVE PER SHARE INFORMATION

    The following table sets forth unaudited data concerning the net loss,
dividends and book value per share for GraphOn and Unity on a pro forma basis
after giving effect to the merger.

<TABLE>
<CAPTION>
                                               (ASSUMING NO       (ASSUMING 19.99%         (ASSUMING NO
                                                CONVERSION)          CONVERSION)            CONVERSION)
                                            -------------------  -------------------  -----------------------
<S>                                         <C>                  <C>                  <C>
                                                YEARS ENDED          YEARS ENDED
                                             DECEMBER 31, 1998    DECEMBER 31, 1998     THREE MONTHS ENDED
                                               (GRAPHON) AND        (GRAPHON) AND         MARCH 31, 1999
                                             JANUARY 31, 1999     JANUARY 31, 1999    (GRAPHON) AND APRIL 30,
                                                  (UNITY)              (UNITY)             1999 (UNITY)
                                            -------------------  -------------------  -----------------------
Net loss per share (basic and diluted)....       $   (0.22)           $   (0.23)             $   (0.18)
Dividends declared per share..............              --                   --                     --
Book value per share at end of
  period(1)...............................                                                   $    0.94

<CAPTION>
                                               (ASSUMING 19.99%
                                                  CONVERSION)
                                            -----------------------
<S>                                         <C>

                                              THREE MONTHS ENDED
                                                MARCH 31, 1999
                                            (GRAPHON) AND APRIL 30,
                                                 1999 (UNITY)
                                            -----------------------
Net loss per share (basic and diluted)....         $   (0.19)
Dividends declared per share..............                --
Book value per share at end of
  period(1)...............................         $    0.85
</TABLE>


- ------------------------

(1) The information is not presented for the years ended December 31, 1998
    (GraphOn) and January 31, 1999 (Unity) as pro forma balance sheets were not
    prepared as of these dates.

    The following tables set forth data concerning the historical net (loss)
income, dividends and book value per share for GraphOn and Unity:

GRAPHON:

<TABLE>
<CAPTION>
                                                    THREE MONTHS ENDED
                                                        MARCH 31,                      FOR THE YEAR ENDED DECEMBER 31,
                                                   --------------------  -----------------------------------------------------------
                                                     1999       1998       1998       1997       1996(1)      1995(1)      1994(2)
                                                   ---------  ---------  ---------  ---------  -----------  -----------  -----------
<S>                                                <C>        <C>        <C>        <C>        <C>          <C>          <C>
HISTORICAL PER SHARE DATA (1):
Net (loss) income per share (basic and
  diluted).......................................  $   (0.13) $   (0.01) $   (0.32) $    0.02   $   (0.03)   $   (0.01)   $      --
Dividends declared per share.....................         --         --         --         --          --           --           --
Book value per share at end of period(2).........  $    0.35  $    0.01  $    0.41  $    0.02   $      --    $    0.03    $    0.04
</TABLE>

- --------------------------

(1) Per share information is based upon the respective shares outstanding at the
    end of the period, which have been obtained from historical data previously
    presented.

(2) Per share information for 1994 is unaudited.

<TABLE>
<CAPTION>
                                                    THREE MONTHS ENDED
                                                        MARCH 31,                      FOR THE YEAR ENDED DECEMBER 31,
                                                   --------------------  -----------------------------------------------------------
                                                     1999       1998       1998       1997       1996(1)      1995(1)      1994(2)
                                                   ---------  ---------  ---------  ---------  -----------  -----------  -----------
<S>                                                <C>        <C>        <C>        <C>        <C>          <C>          <C>
EQUIVALENT PER SHARE DATA (1):
Net income per share (basic and diluted).........  $   (0.23) $   (0.02) $   (0.57) $    0.04   $   (0.05)   $   (0.02)   $   (0.01)
Dividends declared per share.....................         --         --         --         --          --           --           --
Book value per share at end of period............  $    0.63  $    0.02  $    0.74  $    0.04   $      --    $    0.05    $    0.07
</TABLE>

- --------------------------

(1) Per share information is based upon the application of the exchange ratio to
    the number of shares actually outstanding for each period.

(2) Per share information for 1994 is unaudited.

UNITY:


<TABLE>
<CAPTION>
                                                                 FOR THE NINE MONTHS                            PERIOD FROM
                                                                                             YEAR ENDED        MAY 30, 1996
                                                                   ENDED APRIL 30,            JULY 31,          (INCEPTION)
                                                                 --------------------  ----------------------   TO JULY 31,
                                                                   1999       1998       1998       1997(1)       1996(1)
                                                                 ---------  ---------  ---------  -----------  -------------
<S>                                                              <C>        <C>        <C>        <C>          <C>
HISTORICAL PER SHARE DATA:
Net (loss) income per share....................................  $   (0.12) $   (0.02) $   (0.17)         --     $   (0.02)
Dividends declared per share...................................         --         --         --          --            --
Book value per share at end of period..........................  $    3.12  $    3.41  $    3.24   $    3.41     $   (0.02)
</TABLE>


- --------------------------

(1) Unity was inactive during the period May 30, 1996 (inception) through
    November 19, 1996.

                                      xii
<PAGE>
                                  RISK FACTORS

    In addition to the other information contained in this joint proxy
statement/prospectus, shareholders of each of Unity and GraphOn should carefully
review the following factors in deciding whether to vote in favor of approval of
the merger agreement, and whether to execute and return a proxy card. You may
lose all or part of your investment. The risks and uncertainties described below
are not the only ones facing GraphOn and Unity. Additional risks and
uncertainties not presently known to us or risks that we do not consider
significant may also impair either of our businesses or the combined company's
business. If any of the following risks actually occur, they could have a severe
negative impact on our financial results and stock price.

RISKS RELATING TO GRAPHON

WE RECENTLY CHANGED OUR CORPORATE STRATEGY AND HAVE A LIMITED HISTORY OPERATING
  UNDER OUR CURRENT BUSINESS MODEL

    Although GraphOn was founded in 1982, we have a relatively brief operating
history as a provider of server-based software. We changed our strategic focus
in early 1996 from manufacturing and selling computer terminal hardware to
developing server-based software. This change in strategic focus required us to
make changes to our business processes and to make a number of significant
personnel changes, including changes and additions to our engineering and
management teams. As a result of our relatively brief operating history as a
provider of server-based software, you must consider the risks and difficulties
frequently encountered by early stage companies in new and rapidly evolving
markets. These risks include our:

    - substantial dependence on products with only limited market acceptance;

    - need to expand our sales and support organizations;

    - competition with established and emerging companies;

    - need to manage changing operations;

    - reliance upon strategic relationships; and

    - dependence upon key personnel.

    We also depend to a significant degree on the continued growing use of the
Internet for commerce and communication. We cannot be certain that our business
strategy will be successful or that we will successfully address these risks.

GRAPHON HAS A HISTORY OF OPERATING LOSSES AND EXPECTS THESE LOSSES TO CONTINUE
  AND INCREASE, AT LEAST FOR THE NEAR FUTURE

    GraphOn has experienced significant losses since it began operations. It
expects to continue to incur significant losses for the foreseeable future.
GraphOn incurred net losses of approximately $2,148,500 for the year ended
December 31, 1998. GraphOn expects its expenses to increase as it expands its
business but cannot assure you that its revenues will increase as a result of
increased spending. If revenues grow more slowly than anticipated, or if
operating expenses exceed expectations, GraphOn may not become profitable. Even
if we become profitable, we may be unable to sustain profitability.

                                      xiii
<PAGE>
OUR OPERATING RESULTS IN ONE OR MORE FUTURE PERIODS ARE LIKELY TO FLUCTUATE
  SIGNIFICANTLY AND MAY FAIL TO MEET OR EXCEED THE EXPECTATIONS OF SECURITIES
  ANALYSTS OR INVESTORS

    Our operating results are likely to fluctuate significantly in the future on
a quarterly and on an annual basis due to a number of factors, many of which are
outside our control. Factors that could cause our revenues to fluctuate include
the following:

    - the degree of success of our recently introduced products;

    - variations in the timing of and shipments of our products;

    - variations in the size of orders by our customers;

    - increased competition;

    - the proportion of overall revenues derived from different sales channels
      such as distributors, OEMs and others;

    - changes in our pricing policies or those of our competitors;

    - the financial stability of major customers;

    - new product introductions or enhancements by us or by competitors;

    - delays in the introduction of products or product enhancements by us or by
      competitors;

    - the degree of success of new products;

    - any changes in operating expenses; and

    - general economic conditions and economic conditions specific to the
      software industry.

    In addition, our royalty and license revenues are impacted by fluctuations
in OEM licensing activity from quarter to quarter which may involve one-time
royalty payments and license fees. Our expense levels are based, in part, on
expected future orders and sales. Therefore, if orders and sales levels are
below expectations, our operating results are likely to be materially adversely
affected. Additionally, because a significant portion of our expenses are fixed,
a reduction in sales levels may disproportionately affect our net income. Also,
we may reduce prices or increase spending in response to competition or to
pursue new market opportunities. Because of these factors, our operating results
in one or more future periods may fail to meet or exceed the expectations of
securities analysts or investors. In that event, the trading price of our common
stock would likely decline.

OUR FAILURE TO ADEQUATELY PROTECT OUR PROPRIETARY RIGHTS MAY ADVERSELY AFFECT US

    Our commercial success is dependent, in large part, upon our ability to
protect our proprietary rights. We rely on a combination of patent, copyright
and trademark laws, and on trade secrets and confidentiality provisions and
other contractual provisions to protect our proprietary rights. These measures
afford only limited protection. We cannot assure you that measures we have taken
will be adequate to protect us from misappropriation or infringement of our
intellectual property.

    We license essential components of our core technology from three different
parties to whom we pay royalties, although we hold an option, which is
exercisable in the year 2001 or in connection with the merger, to purchase the
technology under such licenses. These licenses may be terminated upon material
breach of the agreements, and if they are terminated our business will be
harmed.

    Despite our efforts to protect proprietary rights, it may be possible for
unauthorized third parties to copy aspects of our products or obtain and use
information that we regard as proprietary. See "Business of GraphOn-Legal
Proceedings." In addition, the laws of some foreign countries do not protect our
intellectual property rights as fully as do the laws of the United States.
Furthermore, we

                                      xiv
<PAGE>
cannot assure you that the existence of any proprietary rights will prevent the
development of competitive products. The infringement upon or loss of any
proprietary rights, or the development of competitive products despite such
proprietary rights, could have a material adverse effect on our business.

WE FACE RISKS OF CLAIMS FROM THIRD PARTIES FOR INTELLECTUAL PROPERTY
  INFRINGEMENT THAT COULD ADVERSELY AFFECT OUR BUSINESS

    We could be faced with infringement claims. At any time, we may receive
communications from third parties asserting that features or content of our
products may infringe upon their intellectual property rights. Any such claims,
with or without merit, and regardless of their outcome, may be time consuming
and costly to defend. We may not have sufficient resources to defend such claims
and they could divert management's attention and resources, cause product
shipment delays or require us to enter into new royalty or licensing agreements.
New royalty or licensing agreements may not be available on beneficial terms,
and may not be available at all. If a successful infringement claim is brought
against us and we fail to license the infringed or similar technology, our
business could be materially adversely affected.

OUR BUSINESS SIGNIFICANTLY BENEFITS FROM STRATEGIC RELATIONSHIPS AND THERE CAN
  BE NO ASSURANCE THAT SUCH RELATIONSHIPS WILL CONTINUE IN THE FUTURE

    Our business and strategy relies to a significant extent on our strategic
relationships with other companies. There is no assurance that we will be able
to maintain or develop any of these relationships or to replace them in the
event any of these relationships are terminated. In addition, any failure to
renew or extend any licenses between us and any third party may adversely affect
our business.

BECAUSE OUR MARKET IS NEW AND EMERGING, WE CANNOT ACCURATELY PREDICT ITS FUTURE
  GROWTH RATE OR ITS ULTIMATE SIZE, AND WIDESPREAD ACCEPTANCE OF OUR PRODUCTS IS
  UNCERTAIN

    The market for server-based software, which enables programs to be accessed
and run with minimal memory resident on a desktop computer or remote user
device, still is emerging, and we cannot assure you that our products will
receive broad-based market acceptance or that this market will continue to grow.
Additionally, we cannot accurately predict our market's future growth rate or
its ultimate size. Even if server-based software products achieve market
acceptance and the market for these products grows, we cannot assure you that we
will have a significant share of that market. If we fail to achieve a
significant share of the server-based software market or if such market does not
grow as anticipated, our business, results of operations and financial condition
may be adversely affected.

WE MAY NEED ADDITIONAL CAPITAL IN THE FUTURE AND MAY NOT BE ABLE TO SECURE
  ADEQUATE FUNDS ON TERMS ACCEPTABLE TO US

    In the future, we may need to raise additional funds to meet our
obligations, cover operating expenses, pursue business strategies, respond to
financial, technological or marketing hurdles or take advantage of new
opportunities. However, we cannot assure you that any additional funds required
will be available at the time or times needed, or available on terms acceptable
to us. If adequate funds are not available, or are not available on acceptable
terms, we may not be able to meet our obligations, pursue business strategies,
take advantage of market opportunities, develop new products or otherwise
respond to competitive pressures. Such inability could have a material adverse
effect on our business, financial condition and results of operations.

                                       xv
<PAGE>
WE RELY ON INDIRECT DISTRIBUTION CHANNELS FOR OUR PRODUCTS AND MAY NOT BE ABLE
  TO RETAIN EXISTING RESELLER RELATIONSHIPS OR TO DEVELOP NEW RESELLER
  RELATIONSHIPS

    Our products primarily are sold through several distribution channels. An
integral part of our strategy is to strengthen our relationships with resellers
such as value-added resellers, distributors, OEMs, systems integrators and other
vendors to encourage these parties to recommend or distribute our products and
to add resellers both domestically and internationally. We currently invest in
and intend to continue to invest significant resources to expand our sales and
marketing capabilities. We cannot assure you that we will be able to attract
and/or retain resellers to market our products effectively. Our inability to
attract resellers and the loss of any current reseller relationships could have
a material adverse effect on our business, results of operations and financial
condition. Additionally, we cannot assure you that resellers will devote enough
resources to provide effective sales and marketing support to our products.

OUR FUTURE SUCCESS WILL DEPEND IN PART UPON OUR ABILITY TO ENHANCE OUR EXISTING
  PRODUCTS AND TO DEVELOP AND INTRODUCE, ON A TIMELY BASIS, NEW PRODUCTS AND
  FEATURES THAT MEET CHANGING CUSTOMER REQUIREMENTS AND EMERGING INDUSTRY
  STANDARDS

    The server-based software market still is emerging and characterized by
rapid technological change, evolving industry standards, changes in end-user
requirements and frequent new product introductions and enhancements. The
introduction of new technological products and the emergence of new industry
standards could render our products obsolete and unmarketable. From time to
time, we may develop new products, capabilities or technologies that have the
potential to replace or shorten the life cycle of our existing products.
Additionally, we cannot assure you that announcements of currently planned or
newly introduced product offerings will not cause customers to defer purchasing
our existing products.

    In addition, we cannot assure you that we will be able to develop products
that keep pace with new technology, or that new technology will not obviate the
need for our products. If any new or enhanced technology gains widespread
acceptance and we fail to develop and provide compatible products on a timely
basis, our competitive position, business, results of operations and financial
condition could be adversely affected. Our future success depends in large part
upon:

    - our ability to enhance our current products;

    - our ability to develop and successfully introduce new products that keep
      pace with technological developments; and

    - our ability to respond to evolving end-user requirements.

    We cannot assure you that we will successfully develop and market new
products or product enhancements on a timely basis, or that new products or
product enhancements we develop will achieve market acceptance.

WE FILED FOR BANKRUPTCY ON NOVEMBER 15, 1991 AND MAY BE REQUIRED TO PAY UP TO
  $2.23 MILLION AND INTEREST, IF ANY, TO CREDITORS.

    On November 15, 1991, we filed for reorganization under Chapter 11 of the
United States Bankruptcy Code and, later, submitted a Debtor's Proposed Amended
Plan of Reorganization. The plan was confirmed by order of the bankruptcy court
on July 11, 1994 and the court established a plan of payment for the benefit of
our creditors. Under the bankruptcy court order, we established a disbursement
account into which 50% of the ongoing terminal royalties we receive from OEMs
with whom we had a current relationship must be deposited to pay named
creditors. See "Business of GraphOn--

                                      xvi
<PAGE>
Corporate History" for a more complete description of these OEMs. For all but
one unsecured creditor, payments from the disbursement account were ordered to
continue up to the earlier of:

    - the limit of our liability to each unsecured creditor or

    - through the year 2000.

However, the largest unsecured creditor's claim, which currently totals
approximately $964,000, must be paid from available funds, if any, in the
disbursement account until such amount is fully paid. Our total remaining
liability under the bankruptcy, as of March 26, 1999, is limited to the lesser
of:

    - approximately $2,230,000 or

    - 50% of future ongoing terminal royalties we receive from the OEMs.

    To date, only royalties received pursuant to some of GraphOn's license
agreements existing at the time of the bankruptcy have been deposited into the
disbursement account, and we have not deposited into such account or paid
creditors out of royalties received or currently received on our subsequently
developed and licensed server-based technology. We believe that our royalty
payment obligations under the bankruptcy court order relate only to licenses in
place as of July 11, 1994, and no payments to creditors have been made since
November 14, 1997. We cannot assure you that a court will not interpret our
obligation to include payments to the disbursement account from royalties earned
from subsequent licenses of the server-based technology or licenses that we
secure in the future, or that our current technology will not be deemed
derivative of our technology existing at July 11, 1994. Consequently, we cannot
assure you that we will not be required to repay creditors referenced in the
bankruptcy proceedings the full amount of our liability, which is approximately
$2,230,000, and interest on any payments that a court deems to be owed based
upon a ruling that our interpretation is wrong. In addition, we cannot guarantee
you that a creditor will not assert a claim for payment out of the royalties
from subsequent licenses of the server-based technology. Such claims could be
costly and time-consuming for us. If any of these events takes place, it could
have a material adverse effect on our business, financial condition and results
of operations. See Note 6 to the GraphOn Financial Statements.

OUR FAILURE TO MANAGE EXPANDING OPERATIONS COULD ADVERSELY AFFECT US

    To exploit the emerging server-based software market, we must rapidly
execute our business strategy and further develop products while managing our
anticipated growth in operations. To manage our growth, we must:

    - continue to implement and improve our operational, financial and
      management information systems;

    - hire and train additional qualified personnel;

    - continue to expand and upgrade core technologies; and

    - effectively manage multiple relationships with various licensees,
      consultants, strategic and technological partners and other third parties.

    We cannot assure you that our systems, procedures, personnel or controls
will be adequate to support our operations or that management will be able to
execute strategies rapidly enough to exploit the market for our products and
services. Our failure to manage growth effectively or execute strategies rapidly
could have a material adverse effect on our business, financial condition and
results of operations.

                                      xvii
<PAGE>
COMPETITION FOR KEY MANAGEMENT AND OTHER PERSONNEL IN OUR INDUSTRY IS INTENSE,
  AND WE MAY NOT BE SUCCESSFUL IN ATTRACTING AND RETAINING THESE PERSONNEL

    Our success and business strategy is dependent in large part on our ability
to attract and retain key management and other personnel. Such individuals are
in high demand and often have competing employment offers. In particular, our
success depends on our ability to retain the services of Mr. Walter Keller, our
President and Chairman of the Board and Ms. Robin Ford, our Executive Vice
President of Marketing and Sales. We have entered into employment agreements
with these individuals that each contain non-competition and confidentiality
covenants. We currently anticipate the need to attract additional sales,
marketing, financial and software engineer personnel in the near future.
Competition for such personnel in the computer software and services industry is
intense, and therefore, we cannot assure you we will be able to attract or
retain such personnel. The loss of the services of one or more members of our
management group or the inability to retain or hire additional personnel as
needed may have a material adverse effect on our business.

OUR PLANNED EXPANSION INTO INTERNATIONAL MARKETS MAKES US SUSCEPTIBLE TO RISKS
  FROM INTERNATIONAL OPERATIONS

    As part of our long term strategy we intend to address the global needs of
our customers and expand our business to commit resources to international
market expansion. In order to execute this strategy, we will need to hire and
train additional personnel and recruit additional international resellers to
successfully expand our international sales. We cannot assure you that we will
be able to increase or maintain international sales of our products or that
international reseller channels will be willing or able to adequately service
and support our products. Our international operations will be subject to a
number of risks including:

    - difficulties in staffing and managing foreign operations;

    - variability of foreign economic conditions and changing restrictions
      imposed by United States export laws;

    - unexpected changes in regulatory requirements;

    - tariffs and other trade barriers;

    - lack of acceptance of products in foreign countries;

    - the burdens of complying with a wide variety of foreign laws; and

    - foreign restrictions on the transfer of currency and variability of
      foreign currency exchange rates.

    We cannot assure you that such factors will not have a material adverse
effect on our future international sales and, consequently, our business,
results of operations and financial condition.

THE MARKET IN WHICH WE PARTICIPATE IS HIGHLY COMPETITIVE AND HAS MORE
  ESTABLISHED COMPETITORS

    The market we participate in is intensely competitive, rapidly evolving and
subject to technological changes. We expect competition to increase as other
companies introduce additional competitive products. In order to compete
effectively, we must continually develop and market new and enhanced products
and market those products at competitive prices. As markets for our products
continue to develop, additional companies, including companies in the computer
hardware, software and networking industries with significant market presence,
may enter the markets in which we compete and further intensify competition. A
number of our current and potential competitors have longer operating histories,
greater name recognition and significantly greater financial, sales, technical,
marketing and other resources than we do. We cannot assure you that our
competitors will not develop and market competitive products that will offer
superior price or performance features or that new competitors will not

                                     xviii
<PAGE>
enter our markets and offer such products. We believe that we will need to
invest increasing financial resources in research and development to remain
competitive in the future. Such financial resources may not be available to us
at the time or times that we need them or upon terms acceptable to us. We cannot
assure you that we will be able to establish and maintain a significant market
position in the face of our competition and our failure to do so would adversely
affect our business.

WE ARE SUBJECT TO RISK OF UNDETECTED ERRORS WHICH COULD SUBSTANTIALLY REDUCE THE
  EFFECTIVENESS OF OUR PRODUCTS AND ADVERSELY AFFECT US

    Our complex software products may contain undetected errors or failures when
first introduced or as new versions are released. We cannot assure you that
errors will not be found in our products after commencement of commercial
shipments. In addition, third-party products that our products depend upon,
including current and future versions of operating systems and application
programs provided by companies such as Sun Microsystems, IBM and Microsoft, may
contain defects which could reduce the performance of our products or render
them useless. Because we do not develop our own application programs and depend
upon third party applications, errors in any application utilized by our
customers could adversely impact the marketability of our products. Similarly,
we cannot assure you that errors or defects in our products will not be
discovered, causing delays in product introductions and shipments or requiring
design modifications that could adversely affect our reputation, competitive
position, business, results of operations and financial condition.

OUR MANAGEMENT WILL BE ABLE TO EXERT SIGNIFICANT CONTROL OVER US

    Following the consummation of the merger, our executive officers, directors
and their affiliates will own or have voting control over approximately 45.8% of
the outstanding shares of common stock. As a result, if they act as a group, the
executive officers and directors may exercise significant influence over such
matters as amendments to our charter and fundamental corporate transactions such
as mergers, asset sales and the sale of post-merger GraphOn. In addition, they
will be able to influence the direction of our business and the election of
members to the board of directors.

WE HAVE AGREED TO CONTRACTUAL PROVISIONS THAT COULD DISCOURAGE ACQUISITION BIDS

    A number of our agreements contain express provisions that do not allow us
to assign them without written consent. These provisions could deter third
parties from making bids to acquire us. These provisions could also limit the
price future investors are willing to pay for shares of our common stock.

OUR FAILURE TO BE YEAR 2000 COMPLIANT WOULD NEGATIVELY IMPACT OUR BUSINESS

    Many currently installed computer systems and software products are coded to
accept only two digit entries in the date code field and therefore are not
designed to handle any dates beyond the year 1999. These date code fields will
need to accept four digit entries to distinguish 21st century dates from 20th
century dates. As a result, in a relatively short time, computer systems and/or
software used by many companies may need to be upgraded to comply with such
"year 2000" requirements to remain functional. Significant uncertainty exists in
the software industry concerning the potential effects associated with such
compliance. Although GraphOn currently offers software products that are
designed and, in certain circumstances, are warranted to be year 2000 compliant,
there can be no assurance that GraphOn's software products contain all necessary
date code changes. In addition, there may be a significant amount of litigation
arising out of year 2000 compliance issues. Because of the unprecedented nature
of such litigation, it is uncertain whether or to what extent GraphOn may be
affected by it.

                                      xix
<PAGE>
    GraphOn believes that the purchasing patterns of customers and potential
customers may be affected by year 2000 issues in a variety of ways. Many
companies are expending significant resources to purchase new software or
correct their current software systems for year 2000 compliance. These
expenditures may result in reduced funds available to purchase GraphOn's
products. In addition, many potential customers may choose to defer purchasing
year 2000 compliant products until they believe it is absolutely necessary, thus
resulting in potentially stalled market sales within the server-based software
industry. Conversely, year 2000 issues may cause other companies to accelerate
purchases, causing an increase in short-term demand and a consequent decrease in
long-term demand for GraphOn's year 2000 compliant products. There can be no
assurance that year 2000 issues will not affect GraphOn in one or more of a
number of possible ways, and will not result in a material adverse effect on
GraphOn's business, operating results and financial condition.

RISKS RELATING TO UNITY SUBSEQUENT TO THE MERGER

POTENTIAL PUBLIC SALES OF A SIGNIFICANT NUMBER OF SHARES OF THE UNITY COMMON
  STOCK COULD REDUCE THE MARKET PRICE OF UNITY COMMON STOCK

    If Unity stockholders sell substantial amounts of Unity common stock,
including up to an aggregate of 4,858,185 shares issuable upon the exercise of
outstanding options and warrants, in the public market following the merger,
then the market price of the Unity common stock could fall. Restrictions under
the securities laws and lock-up agreements limit the number of shares of our
common stock that will be available for sale in the public market. Upon
consummation of the merger, the holders of 9,717,795 shares, or approximately
88.7% of the shares of Unity common stock that will be outstanding after the
merger, will have agreed not to sell any such shares for at least 180 days after
the effective time of the merger.

    Following the completion of the merger, Unity intends to file a registration
statement to register all shares of common stock issuable under Unity's stock
option plans, including GraphOn's stock option plan that is being assumed by
Unity. Until such registration statement becomes effective, shares issued upon
exercise of options will be restricted under the securities laws. After the
filing of such registration statement, shares issued upon exercise of stock
options will be eligible for resale in the public market without restriction.
Such sales could adversely affect the price of Unity's common stock.

NO DIVIDENDS WILL BE PAID IN THE FORESEEABLE FUTURE

    Neither GraphOn nor Unity has ever paid cash dividends on its common stock.
Following the merger, we do not anticipate paying cash dividends for the
foreseeable future. We intend to reinvest any funds that might otherwise be
available for the payment of dividends in further development of its business
following the merger.

THE PRICE OF UNITY'S SECURITIES MAY FLUCTUATE

    The market price of Unity's securities is likely to be highly volatile as
the stock market in general, and the market for technology companies in
particular, has been highly volatile. Stockholders may have difficulty selling
their Unity common stock following periods of volatility because of the market's
adverse reaction to such volatility.

    Factors which could cause such volatility may include, among others:

    - conditions or trends in the computer software industry;

    - changes in the market valuations of other computer software companies;

    - actual or anticipated variations in quarterly operating results;

    - announcements of technological innovations;

                                       xx
<PAGE>
    - capital commitments and expenditures;

    - departures of key employees; and

    - announcements by Unity or its competitors of strategic alliances, joint
      ventures and significant acquisitions.

Many of these factors are beyond Unity's control and may materially adversely
affect the market price of Unity's common stock, regardless of Unity's future
operating results.

    The trading prices of many technology companies' stocks have reached
historical highs within the last 12 months and have reflected valuations
substantially above historical levels. During the same period, such companies'
stocks have also been highly volatile and have recorded lows well below such
historical highs. We cannot assure you that Unity's securities will trade at the
same levels of other technology companies or that technology stocks in general
will sustain their current levels.

UNITY WARRANTS MAY NOT BE EXERCISED IF A CURRENT PROSPECTUS COVERING THE
  UNDERLYING SHARES IS NOT AVAILABLE

    Holders of warrants issued by Unity in its initial public offering cannot
exercise such warrants and then sell the underlying shares of Unity common stock
in the absence of an effective registration statement. The warrants are not
exercisable unless, at the time of exercise, Unity has a current prospectus
covering the shares of Unity common stock issuable upon exercise of the
warrants, and the shares have been registered, qualified or are deemed to be
exempt from registration under the securities laws of the state of residency of
the warrantholder. Although Unity has agreed with the underwriter of its initial
public offering to use its best efforts to keep a registration statement
covering the shares underlying such warrants effective for the life of the
warrants, if Unity fails to do so, the warrants may be deprived of their value.
Maintaining such a registration statement may be very costly over the life of
the warrants.

UNITY'S CERTIFICATE OF INCORPORATION AND BYLAWS COULD MAKE IT DIFFICULT FOR A
  THIRD PARTY TO ACQUIRE UNITY

    Unity's proposed amended and restated certificate of incorporation and
bylaws could have the effect of delaying, deferring or preventing an acquisition
of Unity. For example, the Unity board may issue preferred stock without
stockholder approval. Additionally, such certificate of incorporation provides
for a classified board, with each member having a staggered three year term.
Unity's post-merger certificate of incorporation also will prohibit the
stockholders from taking action by written consent and limit their ability to
call special meetings and make proposals at such meetings. These provisions
could make it more difficult for a third party to remove or replace Unity's
post-merger management or to acquire Unity.

UNITY COMMON STOCK MAY NOT HAVE AN ACTIVE TRADING MARKET, WHICH MAY MAKE IT MORE
  DIFFICULT FOR YOU TO RESELL SHARES WHEN YOU WANT

    There has been a sporadic and at times relatively illiquid public market for
the Unity securities. We cannot predict the extent to which a trading market
will develop or how liquid that market will be after the completion of the
merger.

                                      xxi
<PAGE>
                                   TRADEMARKS

    This joint proxy statement/prospectus contains trademarks of GraphOn and may
contain trademarks of others. Such trademarks of GraphOn include the following:

    - jBridge-TM-

    - GO-Between-TM-

    - GO-Global-TM-

    - GO-Joe-TM-

                                    DILUTION


    The net tangible book value of Unity at April 30, January 31, 1999 was
$5,851,077, or $3.12 for each of the 1,875,000 outstanding shares of Unity
common stock. Net tangible book value per share represents the amount of total
tangible assets of Unity less total liabilities, divided by the number of shares
of Unity common stock outstanding. After giving effect to the merger, the pro
forma net tangible book value of Unity would have been $6,919,260 or $0.63 per
share of Unity common stock or $5,720,355, or $0.53 per share of Unity common
stock, assuming the conversion into cash of 19.99% in interest of the Unity
common stock held by public stockholders (as defined on page 2 of this joint
proxy statement/prospectus). This represents an immediate dilution in net
tangible book value of $2.49 per share of Unity common stock to the Unity
stockholders prior to the merger or $2.59 per share of Unity common stock
assuming 19.99% conversion. The following table illustrates the dilution in net
tangible book value per share of Unity common stock to the Unity stockholders
prior to the merger.



<TABLE>
<CAPTION>
                                                                TANGIBLE BOOK    SHARES OF     TANGIBLE BOOK VALUE
                                                                  VALUE OF         UNITY       PER SHARE OF UNITY
                                                                    UNITY       COMMON STOCK      COMMON STOCK
                                                                -------------  --------------  -------------------
<S>                                                             <C>            <C>             <C>
BEFORE MERGER.................................................   $ 5,851,077       1,875,000        $    3.12
AFTER MERGER TRANSACTION:
  ASSUMING NO CONVERSION
    Pro forma as of January 31, 1999 giving effect to the
      Merger(1)...............................................   $ 6,919,260      10,961,961        $    0.63
  ASSUMING 19.99% CONVERSION
    Pro forma as of January 31, 1999 giving effect to the
      Merger(1)...............................................   $ 5,720,355      10,712,086        $    0.53
</TABLE>


- ------------------------

(1) Does not give effect to the possible exercise subsequent to the effective
    time of options and warrants to purchase a maximum of approximately
    4,858,185 shares of Unity common stock.

                                      xxii
<PAGE>
                                  INTRODUCTION

    This joint proxy statement/prospectus is being furnished by Unity to holders
of its shares of common stock and by GraphOn to holders of its shares of common
stock in connection with the solicitation of proxies by the respective boards of
directors of Unity and GraphOn for use at the special meeting of Unity
stockholders and at the special meeting of GraphOn shareholders. The special
meeting will be held at the times and places and for the purposes set forth in
the accompanying notices of special meeting of Unity stockholders and GraphOn
shareholders, respectively, or any adjournments or postponements.

    At the meetings, the Unity stockholders and the GraphOn shareholders,
respectively, will consider and vote upon a proposal to approve and adopt an
agreement and plan of merger and reorganization, dated as of February 1, 1999,
as amended as of June 1, 1999, between Unity and GraphOn, pursuant to which,
among other matters, GraphOn will merge with and into Unity. At the Unity
meeting, Unity stockholders will first consider and vote upon a proposal to
amend Unity's certificate of incorporation to delete a provision that required
Unity to have been liquidated, and its net assets distributed to public Unity
stockholders by January 11, 1999 as a consequence of Unity's failure to have
effected a merger or other business combination by November 12, 1998. The net
assets are estimated to be $5.28 per common share. The deleted provision will be
replaced with a provision that Unity will be liquidated, and its net assets
distributed to public Unity stockholders, if the proposed merger with GraphOn is
not approved by Unity stockholders or, alternatively, if such merger is approved
but not completed by July 31, 1999.

    At the effective time of the merger, Unity will issue approximately
9,086,961 shares of its common stock to the GraphOn shareholders in exchange for
all of the then issued and outstanding shares of common stock of GraphOn. Unity
also will assume GraphOn warrants exercisable for up to 876,790 shares of Unity
common stock and issue 250,000 warrants exercisable for an aggregate of up to
250,000 shares of Unity common stock. As a result of the merger and the
transactions contemplated by the merger agreement, GraphOn will be merged with
and into Unity, Unity's name will be changed to "GraphOn Corporation," the
GraphOn shareholders will collectively own approximately 82.9% of the then
outstanding Unity common stock and the six present directors of GraphOn will
constitute all but one of the initial members of Unity's post-merger board of
directors. One of the present directors of Unity will continue as a director
following the merger. The current Unity stockholders, collectively, will
continue to own approximately 17.1% of the outstanding Unity common stock
following the merger.

                            SOLICITATION OF PROXIES

    The costs of solicitation of Unity stockholder proxies and GraphOn
shareholder proxies will be borne by Unity and GraphOn, respectively. Unity and
GraphOn will reimburse the respective brokers, fiduciaries, custodians and other
nominees for reasonable out-of-pocket expenses incurred in sending this joint
proxy statement/prospectus and other proxy materials to, and obtaining
instructions relating to such materials from, the respective beneficial owners
of Unity common stock and GraphOn common stock. Unity and GraphOn shareholder
proxies may be solicited by directors, executive officers or regular employees
of, respectively, Unity and GraphOn, in person, by letter, telephone or
telegram.

                           THE UNITY SPECIAL MEETING

PURPOSES OF MEETING

    At the Unity meeting, Unity stockholders who are eligible to vote will be
asked to consider and vote upon a proposal to amend Unity's certificate of
incorporation. If adopted, the amendment will delay Unity's liquidation pending
the outcome of the vote by Unity stockholders to approve the merger. This
amendment further provides that if the merger with GraphOn is approved by Unity
stockholders but is not completed by July 31, 1999, Unity will be liquidated and
its net assets distributed to public

                                       1
<PAGE>
Unity stockholders. A copy of the text of the charter amendment is attached as
Exhibit A to this joint proxy statement/prospectus. See "--The Charter
Amendment."

    If the charter amendment is not approved at the Unity meeting, Unity
stockholders will not consider and vote upon the proposal to approve the merger
and Unity will be liquidated.

    At the Unity meeting, eligible Unity stockholders also will be asked to
consider and vote upon a proposal to approve the merger, including the merger
agreement. A vote in favor of the merger of GraphOn into Unity also will
constitute approval of Unity's assumption of the GraphOn 1998 Stock Option/Stock
Issuance Plan and all of the outstanding options issued under such plan. A copy
of the merger agreement is attached as Exhibit B to this Joint Proxy
Statement/Prospectus.

    THE UNITY BOARD, WITHOUT DISSENT, HAS APPROVED THE CHARTER AMENDMENT AND THE
MERGER AND RECOMMENDS THAT THE UNITY STOCKHOLDERS VOTE "FOR" THE PROPOSALS TO
APPROVE AND ADOPT THE CHARTER AMENDMENT AND THE MERGER, INCLUDING THE MERGER
AGREEMENT. See "The Merger--Recommendations of the Boards of Directors and
Reasons for the Merger--Unity."

DATE, TIME AND PLACE; RECORD DATE

    The Unity meeting is scheduled to be held at 10:00 A.M., local time, on June
  , 1999, at 800 Third Avenue, 30th Floor, New York, New York. The Unity board
has fixed the close of business on May   , 1999 as the record date for the
determination of holders of Unity common stock eligible to receive notice of and
to vote at the Unity meeting. On the Unity record date, there were 1,875,000
shares of Unity common stock, held of record by 37 persons, outstanding and
entitled to vote. Each share of Unity common stock is entitled to one vote.

VOTING RIGHTS

    Holders of record of Unity common stock on the Unity record date are
entitled to vote on the proposals to be presented to the Unity stockholders at
the Unity meeting. The presence, either in person or by proxy, of the holders of
a majority of the outstanding shares of Unity common stock eligible to vote at
the Unity meeting is necessary to constitute a quorum at the Unity meeting.
Abstentions and broker non-votes are counted for purposes of determining the
presence or absence of a quorum for the transaction of business. Pursuant to
Delaware law, the affirmative vote of the holders of at least a majority of
Unity common stock is required to approve and adopt the charter amendment and
the merger, including the merger agreement. A condition precedent to the
completion of the merger requires that no more than 20% of the outstanding Unity
common stock held by shareholders who acquired such common stock in Unity's
initial public offering or thereafter (the "public Unity stockholders") vote
against approval of the merger and thereafter offer their shares to Unity for
conversion into cash.

    Unity stockholders who acquired such common stock prior to the IPO (the
"non-public Unity stockholders") have agreed to vote such Unity common stock
with respect to the proposals to approve the charter amendment and the merger in
accordance with the vote of the majority of all public Unity stockholders. The
amount of Unity common stock subject to these agreements is an aggregate of
approximately 33.3% of the currently outstanding shares of Unity common stock.
Consequently, if a majority of outstanding Unity common stock held and voted by
public Unity stockholders is voted in favor of the charter amendment, the
non-public Unity stockholders will vote their shares of Unity common stock in
favor of the charter amendment. The vote upon whether to approve the merger will
be governed in a like manner.

    If a Unity stockholder attends the Unity meeting, he or she may vote by
ballot. However, many of the Unity stockholders may be unable to attend the
Unity meeting. Therefore, the Unity board is

                                       2
<PAGE>
soliciting proxies so that each holder of Unity common stock on the Unity record
date has the opportunity to vote on the proposals to be considered at the Unity
meeting. When a proxy card is returned properly signed and dated, the shares
represented by the proxy card will be voted in accordance with the instructions
on the proxy card. If a Unity stockholder does not return a signed proxy card,
his or her shares will not be voted. Unity stockholders are urged to mark the
box on the proxy card to indicate how their shares are to be voted. If a Unity
stockholder, other than a broker which holds shares in street name for its
customers, returns a signed proxy card, but does not indicate how his or her
shares are to be voted, the shares represented by the proxy card will be voted
FOR approval and adoption of each of the charter amendment and the merger. If a
signed proxy card is returned by a Unity stockholder and expressly reflects an
abstention upon any proposal or if a signed proxy card is returned by a broker
with no indication of how shares are to be voted, the shares evidenced by the
proxy card will be counted towards the quorum necessary to convene the Unity
meeting, noted in the immediately preceding paragraph, but will not be counted
towards the requisite affirmative vote upon such proposal as mandated by
applicable Delaware law. The proxy card also confers discretionary authority on
the individuals appointed by the Unity board and named on the proxy card to vote
the shares represented by the proxy card on any other matter incidental to the
Unity meeting that is properly presented for action at such meeting.

    Any Unity stockholder who executes and returns a proxy card may revoke such
proxy at any time before it is voted by:

    - notifying in writing the Secretary of Unity, at 245 Fifth Avenue, New
      York, New York 10016;

    - granting a subsequent proxy; or

    - appearing in person and voting at the Unity meeting.

Attendance at the Unity meeting will not in and of itself constitute revocation
of a proxy.

    IF THE MERGER IS NOT APPROVED BY THE REQUISITE VOTE IMPOSED BY APPLICABLE
DELAWARE LAW OR, EVEN IF SO APPROVED BUT 20% OR MORE IN INTEREST OF ALL PUBLIC
UNITY STOCKHOLDERS ACTUALLY VOTE AGAINST APPROVAL OF THE MERGER AND
AFFIRMATIVELY REQUEST CONVERSION OF THEIR SHARES OF UNITY COMMON STOCK INTO
CASH, THE MERGER AGREEMENT WILL BE TERMINATED AND THE MERGER ABANDONED.

                          THE GRAPHON SPECIAL MEETING

PURPOSES OF MEETING

    At the GraphOn meeting, GraphOn shareholders eligible to vote thereat will
be asked to consider and vote upon a proposal to approve and adopt the merger,
including the merger agreement.

    THE GRAPHON BOARD, WITHOUT DISSENT, HAS APPROVED THE MERGER AND RECOMMENDS
THAT THE GRAPHON SHAREHOLDERS VOTE "FOR" THE PROPOSAL TO APPROVE AND ADOPT THE
MERGER, INCLUDING THE MERGER AGREEMENT. See "The Merger--Recommendations of the
Boards of Directors and Reasons for the Merger--GraphOn."

DATE, TIME AND PLACE; RECORD DATE

    The GraphOn meeting is scheduled to be held at 10:00 A.M., local time, on
June   , 1999, at 150 Harrison Avenue, Campbell, California. The GraphOn board
has fixed the close of business on May   , 1999 as the record date for the
determination of holders of GraphOn common stock eligible to receive notice of
and to vote at the GraphOn meeting. On the GraphOn record date, there were
16,296,559 shares of GraphOn common stock, held of record by approximately 211
persons, outstanding and entitled to vote. Each share of GraphOn common stock is
entitled to one vote.

                                       3
<PAGE>
VOTING RIGHTS

    Holders of record of GraphOn common stock on the GraphOn record date are
entitled to vote on the proposals to be presented to the GraphOn shareholders at
the GraphOn meeting. The presence, either in person or by proxy, of the holders
of a majority of the outstanding shares of GraphOn common stock eligible to vote
at the GraphOn meeting is necessary to constitute a quorum at the GraphOn
meeting. Abstentions and broker non-votes are counted for purposes of
determining the presence or absence of a quorum for the transaction of business.
However, pursuant to California law, the affirmative vote of the holders of at
least a majority of GraphOn common stock eligible to vote at the GraphOn meeting
is required to approve and adopt the merger, including the merger agreement.

    If a GraphOn shareholder attends the GraphOn meeting, he or she may vote by
ballot. However, many of the GraphOn shareholders may be unable to attend the
GraphOn meeting. Therefore, the GraphOn board is soliciting proxies so that each
holder of GraphOn common stock on the GraphOn record date has the opportunity to
vote on the proposals to be considered at the GraphOn meeting. When a proxy card
is returned properly signed and dated, the shares represented by the proxy card
will be voted in accordance with the instructions on the proxy card. If a
GraphOn shareholder does not return a signed proxy card, his or her shares will
not be voted. GraphOn shareholders are urged to mark the box on the proxy card
to indicate how their shares are to be voted. If a GraphOn shareholder, other
than a broker which holds shares in street name for its customers, returns a
signed proxy card, but does not indicate how his or her shares are to be voted,
the shares represented by the proxy card will be voted FOR approval and adoption
of the merger. If a signed proxy card is returned by a GraphOn shareholder and
expressly reflects an abstention upon any proposal, the shares evidenced by the
proxy card will be counted towards the quorum necessary to convene the GraphOn
meeting, but will not be counted towards the requisite affirmative vote upon
such proposal as mandated by applicable California law. The proxy card also
confers discretionary authority on the individuals appointed by the GraphOn
board and named on the proxy card to vote the shares represented by the proxy
card on any other matter incidental to the GraphOn meeting that is properly
presented for action at such meeting.

    Any GraphOn shareholder who executes and returns a proxy card may revoke
such proxy at any time before it is voted by:

    - notifying in writing the Assistant Secretary of GraphOn, at Brobeck,
      Phleger & Harrison LLP, Two Embarcadero Place, 2200 Geng Road, Palo Alto,
      California 94303, Attn.: Curtis L. Mo, Esq.;

    - granting a subsequent proxy; or

    - appearing in person and voting at the GraphOn meeting.

Attendance at the GraphOn meeting will not in and of itself constitute
revocation of a proxy.

                             THE CHARTER AMENDMENT

    The charter amendment, to be presented to the Unity stockholders as a single
integral proposal, consists of three separate but inter-related amendments to
the Unity certificate of incorporation, as follows:

        1. The deletion of portions of Articles SEVENTH and NINTH that preclude
    any amendment of Article SEVENTH prior to the consummation of a merger;

        2. The deletion of the provision set forth in paragraph (c) of Article
    SEVENTH that required Unity to be liquidated, and its net assets distributed
    to public Unity stockholders, by January 10, 1999 if Unity had not effected
    a merger by November 12, 1998; and

                                       4
<PAGE>
        3. The replacement of such deletion with a provision that would require
    Unity to be liquidated, and its net assets distributed to public Unity
    stockholders, if Unity does not complete the merger by July 31, 1999.

    The charter amendment is being submitted for consideration and approval by
the Unity stockholders in order to defer Unity's liquidation pending the result
of a vote by Unity stockholders upon the proposal to approve the merger.

    The complete text of those portions of Unity's certificate of incorporation
to be effected by the charter amendment is attached to this joint proxy
statement/prospectus as Exhibit A.

    Unity has obtained from its special counsel, Richards, Layton & Finger,
P.A., of Wilmington, Delaware, an opinion, a copy of which has been filed as an
exhibit to our registration statement, to the effect that those provisions of
Unity's certificate of incorporation which prohibit the amendment of paragraph
(c) of Article SEVENTH of the certificate of incorporation during the period
commencing upon consummation of the Company's initial public offering and prior
to the consummation of a business combination (as defined in Unity's certificate
of incorporation) are contrary to Delaware law because they eliminate the rights
granted to a corporation and its shareholders by the Delaware General
Corporation Law ("DGCL") to amend the corporation's certificate of incorporation
if certain procedures are followed. The opinion of Richards, Layton & Finger,
P.A. notes, however, that there is no Delaware case directly on point and that
its conclusion is based on reasoning from decisions which are not on point.

    If the charter amendment and the merger are each approved by Unity
stockholders, Unity will take all steps reasonably necessary to effect the
merger in accordance with the terms of the merger agreement, as soon as
practical.

    If the charter amendment is not approved by Unity stockholders, the merger
will not be voted upon by Unity stockholders and Unity's board will take steps
to promptly effect a liquidation of Unity and a distribution of its net assets
to public Unity stockholders.

    If the charter amendment is approved and the merger is not approved by Unity
stockholders or, if approved but not completed on or prior to July 31, 1999, the
Unity board will take steps to promptly effect a liquidation of Unity and a
distribution of its net assets to public Unity stockholders.

    In adopting the charter amendment, the Unity board believed it was
beneficial for Unity stockholders to have the opportunity to consider the merger
with GraphOn. The Unity board also believed that if Unity stockholders did not
approve the merger with GraphOn, its efforts at seeking to find a suitable
candidate for a merger or other business combination should cease with finality
and the Unity board would then proceed to effect a prompt liquidation of Unity.

                                   THE MERGER

GENERAL

    The following is a brief summary of the material features of the merger.
This summary does not purport to be complete and is qualified in its entirety by
reference to the merger agreement, which is attached to this joint proxy
statement/prospectus as Exhibit B.

                                       5
<PAGE>
    The following table identifies those persons or groups of persons who will
derive significant equity interests in Unity following completion of the merger.
The following numbers include shares of common stock and shares of common stock
issuable upon exercises of options and warrants. See "Principal Shareholders of
GraphOn."

<TABLE>
<CAPTION>
                                         EQUITY INTEREST IN UNITY UPON        BASIS FOR ACQUISITION OF EQUITY
NAME OF GROUP                                CONSUMMATION OF MERGER                       INTEREST
- ------------------------------------  ------------------------------------  ------------------------------------
<S>                                   <C>                                   <C>

Executive officers and directors of   5,149,236 shares of Unity common      In exchange for 9,234,643 shares of
  GraphOn                             stock                                 GraphOn common stock held prior to
                                                                            the merger

Principal shareholders of GraphOn     4,846,602 shares of Unity common      In exchange for 8,778,565 shares of
  (excluding Spencer Trask)           stock                                 GraphOn common stock held prior to
                                                                            the merger

Investors in GraphOn's private        2,878,815 shares of Unity common      In exchange for 5,162,868 shares of
  equity financing between October    stock                                 GraphOn common stock held prior to
  28, 1998 and January 27, 1999                                             the merger

Spencer Trask                         1,230,488 shares of Unity Common      In exchange for 2,206,759 shares of
                                      Stock, 250,000 Class A redeemable     GraphOn common stock held prior to
                                      common stock purchase warrants        the merger and in consideration for
                                      exercisable for an aggregate of up    consulting services performed in
                                      to 250,000 shares of Unity Common     connection with the merger.
                                      Stock and up to $575,000.
</TABLE>

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

    At the effective time of the merger, GraphOn will be merged with and into
Unity, and the Unity certificate of incorporation will be amended and restated
to change Unity's name to "GraphOn Corporation" and to change other provisions
which are not currently included in the certificate of incorporation of Unity.
These provisions, included at the request of the GraphOn board, will:

    - prohibit stockholder actions by written consent in lieu of meetings;

    - require the approval of the holders of two-thirds of the outstanding
      shares of capital stock to amend the certificate of incorporation or
      bylaws of Unity;

    - increase the amount of authorized shares of common stock of Unity from
      20,000,000 to 45,000,000 and the authorized shares of preferred stock from
      5,000 to 5,000,000;

    - require the approval of the holders of two-thirds of the outstanding
      shares of capital stock to remove a director from office;

    - allow special stockholder meetings to be called only by the board of
      directors or the holders of at least 50% of the outstanding capital stock
      of the combined company;

    - classify the board of directors into three classes, one of which is
      elected at each annual meeting of stockholders to hold office for a
      three-year term; and

    - clarify that the Corporation is authorized to advance expenses to persons
      entitled to indemnity by the Corporation and provide a mechanism for such
      persons to recover on any unpaid indemnity claims.

                                       6
<PAGE>
    The following is a brief summary of the material features, purposes and
effects of the amended and restated certificate of incorporation. The text of
the amended and restated certificate of incorporation is attached to this joint
proxy statement/prospectus as Exhibit C. To understand it fully, you should
carefully read the text of it.

    INCREASE IN AUTHORIZED NUMBER OF SHARES OF CAPITAL STOCK

    COMMON STOCK.  Unity is seeking to increase the authorized number of shares
of common stock from 20,000,000 to 45,000,000.

    The principal purpose of the excess number of authorized but unissued shares
of common stock is to provide Unity with flexibility in the future by assuring
that there will be sufficient authorized but unissued shares of common stock
available for financing requirements, possible acquisitions, future stock splits
or dividends, stock option and other employee incentive programs and other
corporate purposes without the necessity of further stockholder approval, except
as may be required in a particular case by Unity's charter documents, applicable
law or the rules of any stock exchange on which Unity's securities may then be
listed. However, issuance of additional shares of common stock would have the
effect of diluting the voting rights of existing holders of common stock and
could have the effect of diluting earnings per share and net book value per
share.

    PREFERRED STOCK.  Unity is seeking to increase the authorized number of
undesignated shares of preferred stock from 5,000 to 5,000,000. There are no
shares of Unity preferred stock presently outstanding, and no shares of Unity
preferred stock will be outstanding immediately after the merger.

    The purpose of authorizing undesignated preferred stock is to provide Unity
with the flexibility to issue 5,000,000 shares of preferred stock in series,
with such rights, preferences and privileges as the Unity board may determine,
without the need for further stockholder approval. From time to time, the Unity
board may determine that the designation and issuance of preferred stock with
certain rights and preferences is necessary to serve certain corporate purposes.
Because the terms of such preferred stock may be fixed by the Unity board
without stockholder action, the preferred stock can be designated and issued
quickly in the event Unity requires additional equity capital. The existence of
authorized but undesignated preferred stock also could have an anti-takeover
effect. Shares of authorized and unissued preferred stock (within the limits
imposed by applicable law) could be given terms and issued in one or more
transactions that would make a takeover of Unity more difficult, and therefore
less likely. Shares of undesignated preferred stock could also be issued to
persons who are friendly to existing management or used to make acquisitions or
enter into other transactions that might frustrate potential acquirors. Under
certain circumstances, this may have the effect of decreasing the market price
of the Unity common stock. Furthermore, any preferred stock designated and
issued could have rights equal to or superior to those of the outstanding common
stock and could adversely affect the voting or other rights of the common stock.
Finally, any such issuance of additional stock could have the effect of diluting
the earnings per share and book value per share of all outstanding shares of
common stock, in addition to diluting the stock ownership or voting rights of
persons seeking to obtain control of Unity. Unity does not presently contemplate
the designation and issuance of any such undesignated preferred stock.

    CLASSIFIED BOARD

    The proposed amended and restated certificate of incorporation institutes a
classified board of directors, whereby each director shall be elected to a
staggered three year term, and each year only one-third of the seats on the
board shall be contestable. Any corporation is permitted by Delaware law to
divide its board into classes in this manner.

    The division of the board into classes may have the effect of discouraging
or delaying efforts to acquire control of Unity. Stockholders should recognize
that this provision could render more difficult

                                       7
<PAGE>
or discourage a merger, proxy contest, or the assumption of control of Unity by
a large stockholder or group of stockholders. To the extent that this provision
makes it more difficult to remove the board, it could enable the board to resist
a takeover or change in control and make it more difficult to amend the amended
and restated certificate of incorporation, approve certain acquisition proposals
and remove the existing management.

    ACTION BY WRITTEN CONSENT; SPECIAL STOCKHOLDER MEETINGS; AMENDMENTS TO
     PROPOSED CERTIFICATE AND BYLAWS

    The proposed certificate and bylaws will eliminate the power of stockholders
to act without a meeting by written consent after the consummation of the
merger. In addition, they would require the approval of two-thirds of Unity's
shares entitled to vote to amend the provisions of the proposed certificate and
bylaws.

    These provisions would prevent a stockholder or stockholders owning a
majority of the voting power from acting by written consent or amending the
proposed certificate and bylaws after the consummation of the merger. Action by
written consent, under some circumstances, may enable the taking of stockholder
action opposed by management more quickly than would otherwise be possible.

    Eliminating unilateral stockholder action by written consent may have the
effect of discouraging or delaying efforts to acquire control of Unity.
Stockholders should recognize that these provisions could render more difficult
or discourage a merger, proxy contest, or the assumption of control of Unity by
a large stockholder or group of stockholders. To the extent that this provision
enables the Unity board to resist a takeover or change in control by requiring
that actions of the stockholders be submitted at a duly called and convened
meeting, it could make it more difficult to amend the certificate, approve
certain acquisition proposals and remove the existing board of directors and
management.

    NOTIFICATION REQUIREMENTS FOR STOCKHOLDER PROPOSALS AND DIRECTOR NOMINATIONS

    The proposed bylaws provide that stockholders seeking to make stockholder
proposals must:

    - notify Unity of such proposal not fewer than 120 days prior to the date of
      the meeting;

    - disclose adequate information about such proposal; and

    - provide information about the stockholder(s) making the proposal.

In addition, the bylaws provide that stockholders' director nominations:

    - be in writing and contain adequate information about the nominee and the
      person participating in or organizing such nomination; and

    - be received by the Secretary of Unity not fewer than 120 days prior to the
      date of the meeting at which directors will be elected.

    These prior notice provisions would act to provide the Unity board with
advance notice of possible dissident stockholder proposals and director
nominations and provide the board with additional time to develop a response. In
addition, this increase in the minimum notice period, combined with the
abolition of stockholder actions by written consent and the calling by
stockholders of special meetings discussed above, could have the effect of
discouraging or delaying efforts to acquire control of Unity, by potentially
increasing the amount of time before the stockholders may vote on an issue.

EXCHANGE RATIO

    At the effective time, each then outstanding share of GraphOn common stock
will be converted into the right to receive approximately .5576 of a share of
Unity common stock (the "exchange ratio"), or an approximate aggregate of
9,086,961 shares of Unity common stock (the "Unity merger stock").

                                       8
<PAGE>
No fractional shares of Unity common stock will be issued in the merger, and
GraphOn shareholders whose shares are converted in the merger will be entitled
to a cash payment in lieu of such fractional shares. The exchange ratio was
established through arms-length negotiations between Unity and GraphOn.

UNITY EXCHANGE OPTIONS

    At the effective time, the GraphOn 1998 Stock Option/Stock Issuance Plan and
all outstanding options under the plan will be assumed by Unity. A total of
2,746,444 shares of GraphOn common stock are reserved for issuance under the
plan. Currently options are outstanding under the plan to purchase approximately
818,500 shares of GraphOn common stock at exercise prices ranging from $0.075 to
$3.26 per share. The number of shares reserved for issuance under the plan,
together with the number of shares subject to outstanding options and the
exercise prices in effect under those options, will be adjusted to reflect the
exchange ratio. Accordingly, after conversion, a total of 1,531,417 shares of
Unity common stock will be reserved for issuance under the plan and options to
purchase approximately 456,395 shares of Unity common stock at exercise prices
ranging from approximately $0.13 to $5.85 per share (the "Unity exchange
options") will be outstanding under the plan. The shares reserved under the
plan, and all outstanding options, will be registered on a separate registration
statement under the Securities Act. Unity will use its best efforts subsequent
to the effective time to maintain the registered status of such shares up to and
through the expiration date of the Unity exchange options and to maintain a
current prospectus covering such shares.

UNITY MERGER WARRANTS

    At the effective time, warrants to purchase 1,572,437 shares of GraphOn
common stock at an exercise price of $1.00 per share will be assumed by Unity
and converted at the exchange ratio into warrants to purchase 876,790 shares of
Unity common stock at an exercise price of approximately $1.79 per share (the
"Unity merger warrants").

    The shares of Unity common stock issuable upon exercise of the Unity merger
warrants are being registered under the Securities Act contemporaneously with
the date of this joint proxy statement/ prospectus. Unity will use its best
efforts subsequent to the effective time to have such shares of Unity common
stock so registered or qualified at all times up to and through the respective
expiration dates of the Unity merger warrants and to maintain a current
prospectus covering their underlying shares.

CLASS A REDEEMABLE COMMON STOCK PURCHASE WARRANTS

    At the effective time, Unity will issue to Spencer Trask 250,000 Class A
redeemable common stock purchase warrants exercisable for an aggregate of up to
250,000 shares of Unity common stock at an exercise price of $5.50 per share.
The shares of Unity common stock issuable upon exercise of the warrants are
being registered under the Securities Act contemporaneously with the date of
this joint proxy statement/prospectus. Unity will use its best efforts
subsequent to the effective time to have the shares of Unity common stock
underlying the warrant so registered or qualified at all times up to and through
the expiration date of the warrant and to maintain a current prospectus covering
such shares. This warrant is to be issued to Spencer Trask in consideration for
consulting services performed in connection with the merger.

CLOSING; EFFECTIVE TIME

    The closing of the transactions contemplated by the merger agreement will
take place as soon as practicable immediately following the date on which the
last of the conditions set forth in the merger agreement is satisfied or waived,
or at such other time as Unity and GraphOn agree. The merger will become
effective at such time as a certificate of merger and an agreement of merger
reflecting the

                                       9
<PAGE>
merger shall be accepted for filing by the Secretary of State of the State of
Delaware, and by the Secretary of State of the State of California,
respectively. Such filings will be made simultaneously with or as soon as
practicable after the closing.

EXCHANGE OF STOCK CERTIFICATES

    At the effective time, the GraphOn shareholders will exchange certificates
representing all of the GraphOn common stock for the Unity merger stock. No
fractional shares of Unity common stock will be issued.

    Unity stockholders may but will not be required to surrender certificates
evidencing shares of Unity common stock following the approval and adoption of
the merger agreement and the subsequent implementation of the merger.

NO FRACTIONAL SHARES

    No certificates or scrip for fractional shares of Unity common stock will be
issued upon the surrender for exchange of GraphOn certificates in the merger. No
dividend, stock split or interest will be paid with respect to any fractional
share of Unity common stock, and such fractional interests will not entitle the
owner to vote or to any of the other rights of a holder of Unity common stock.
Instead, each GraphOn shareholder who would otherwise have been entitled to a
fraction of a share of Unity common stock upon surrender of GraphOn certificates
for exchange will be entitled to receive a cash payment equal to such fraction
multiplied by the closing price per share of Unity common stock as reported by
the OTC Bulletin Board on the day preceding the effective time.

BACKGROUND OF THE MERGER

    As discussed under "Business of Unity" elsewhere in this joint proxy
statement/prospectus, Unity was formed to serve as a vehicle to effect a merger
with an operating business which the Unity board believed had significant growth
potential.

    One of the conditions to the completion of the Unity IPO was Unity's
agreement with the underwriters of the IPO, placed into Unity's certificate of
incorporation at their request, to the effect that if Unity was unable to enter
into a letter of intent to effect a merger by May 12, 1998, Unity would be
liquidated and its net assets distributed to the public Unity stockholders.
However, if Unity entered into such a letter of intent on or prior to such date,
Unity would then be accorded an additional six month period to complete such
merger, failing which Unity was to be liquidated. Unity's certificate of
incorporation further provides that this liquidation requirement cannot be
deleted prior to the completion of a merger by means of an amendment to Unity's
certificate of incorporation.

    At the time of the Unity IPO, the Unity board adopted a policy that Unity
would not effect a merger with any operating business unless the fair market
value of such company, as determined by the Unity board based upon standards
generally accepted by the financial community, such as actual and potential
sales, earnings, cash flow and book value, would be at least 80% of the net
assets of Unity at the time of such merger (the "fair market value
requirement"). If the Unity board could not determine that an operating business
had sufficient fair market value, the Unity board's policy dictated that Unity
would have to obtain an opinion from an independent investment banking firm to
such effect, absent which Unity could not proceed with the proposed merger.
However, no such opinion would be required if the Unity board were to determine
that the potential operating business prospective had sufficient fair market
value.

    Following the consummation of Unity's IPO in November 1996, Unity's
executive officers commenced an active search for an operating business.
Approximately 90% of such net proceeds were

                                       10
<PAGE>
placed in escrow immediately following the IPO, to be released either upon
consummation of a merger or if required to facilitate a merger, as applicable.

    Excluding Worlds, Inc., a privately held company that was engaged in the
business of developing applications for its three dimensional Internet
technology, with particular emphasis on producing music-oriented websites in
conjunction with record companies, and with which Unity previously entered into
a now lapsed merger agreement, and GraphOn, during the period from November 1996
through May 1998 Unity's executive officers evaluated approximately 15 potential
operating businesses in diverse industries. Serious consideration was given to
effecting a merger with four of such potential operating businesses engaged in,
respectively, the communications equipment, specialty chemical, computer systems
and optical fiber industries. Unity conducted exploratory discussions with each
of these four potential operating businesses, but did not enter into a
definitive merger agreement with any of such concerns.

    In evaluating each potential operating business, Unity's executive officers
and the Unity board first considered whether or not such operating business met
the fair market valuation requirement and, having determined such requirement
had been satisfied, then considered all or a majority of the following factors
(collectively, "acquisition criteria"):

    - costs associated with effecting the merger;

    - equity interest in and opportunity for control of the operating business;

    - growth potential of the operating business and the industry in which it
      operates;

    - experience and skill of management and availability of additional
      necessary personnel of the operating business;

    - capital requirements of the operating business;

    - competitive position of the operating business;

    - stage of development of the product, process or service of the operating
      business;

    - degree of current or potential market acceptance of the product, process
      or service of the operating business;

    - proprietary features and degree of intellectual property or other
      protection of the product, process or service of the operating business;
      and

    - regulatory environment of the industry in which the operating business
      operates.

                                       11
<PAGE>
    All of the prospective operating businesses were rejected prior to execution
of a definitive merger agreement. The primary basis or bases of rejection were
as follows:

<TABLE>
<CAPTION>
PROSPECTIVE ACQUIRED BUSINESS                                         UNSATISFIED ACQUISITION CRITERIA
- --------------------------------------------------------  --------------------------------------------------------
<S>                                                       <C>

Communications equipment (wireless telephone headsets)    Absence of demonstrable evidence of market acceptance of
                                                          products; inability to recruit and retain experienced
                                                          sales personnel and greater than projected capital
                                                          requirements (4th, 5th, 7th and 8th acquisition
                                                          criteria).

Specialty chemicals (industrial enzymes)                  Principal owner and operator of target was unwilling to
                                                          personally represent target's past and present
                                                          compliance with applicable environmental laws and
                                                          regulations (3rd, 5th and 10th acquisition criteria).

Computer systems (voter registration information          Inability to recruit chief financial officer and
  management systems for public sector use)               shortfall in target's projected revenues which, when
                                                          combined with Unity's capital resources, were believed
                                                          by Unity's executive officers to be insufficient to
                                                          assure future profitability (3rd, 4th, 5th and 6th
                                                          acquisition criteria).

Optical fibers (plastic optical fiber cables for in-      Absence of demonstrable evidence of market acceptance of
  office server/computer/ peripherals interface)          products; significant additional capital requirements;
                                                          extremely early state of product development (5th, 7th
                                                          and 8th acquisition criteria)
</TABLE>

    The last potential operating business to be evaluated by Unity prior to its
negotiation of its agreement to merge with Worlds was Boston Optical Fiber, Inc.
("BOF"), a privately held company engaged in the development of plastic optical
fiber for use in the interface of computer networks and local access
communications.

    On or about April 13, 1998, after approximately six weeks of intermittent
discussions between an independent consultant retained by Unity to evaluate both
the technological feasibility and commercial viability of BOF's second
generation products, such consultant informed Lawrence Burstein, Unity's
President, that he felt it would take no less than one year and possibly as long
as 18 months to two years to establish such feasibility. He further stated that
he was not in a position to express a firm opinion as to commercial viability
until technological feasibility was established. He specifically called Mr.
Burstein's attention to the fact that fiber optic technology was rapidly
changing and there existed a strong possibility that existing manufacturers of
both copper and glass cable would expend significant revenues during the next
several years to enhance the performance and reduce the cost of their respective
interface cabling products in an effort to maintain their dominant market share,
to the possible detriment of plastic optical fiber cable usage. He indicated
that should this occur, he questioned whether BOF would be in a position to
effectively compete with such concerns.

    On April 24, 1998, cognizant of the fact that if the Unity board elected not
to proceed with a merger with BOF Unity would have until May 12, 1998 to enter
into a letter of intent for an alternative merger or undergo liquidation, Mr.
Burstein initiated a meeting with Thomas Kidrin, Worlds' President, and Steven
Greenberg, a principal stockholder of and consultant to Worlds, to explore the
feasibility of a possible merger between Unity and Worlds. Mr. Burstein was
familiar with Worlds and its then current and proposed business operations by
reason of his status as a principal of Unity Venture

                                       12
<PAGE>
Capital Associates Ltd. ("Unity VCA"), a private investment banking firm which
had become a minor shareholder in Worlds as a consequence of a previous merger
between Worlds and Academic Computer Systems, Inc. ("ACS"), a dormant "blank
check" company controlled by Unity VCA.

    On April 27, 1998, a meeting was held at Mr. Greenberg's office in New York
City, at which time Messrs. Kidrin and Greenberg presented a comprehensive
review of the progress made by Worlds in developing both its 3-D Internet
technology and its potential applications.

    On April 29, 1998, Mr. Burstein telephoned each of the members of the Unity
board and explained in detail his concerns over proceeding with a merger with
BOF. In particular, Mr. Burstein observed that perhaps that as much as two years
could elapse before the technological feasibility of BOF's second generation
products could be established, with no assurance at this time as to outcome, and
that even if such products were technologically feasible and they lent
themselves to patent or other proprietary protection, several additional years
could elapse before they could be brought to market. Each of the members of the
Unity board, contacted individually by Mr. Burstein on April 29, 1998, advised
Mr. Burstein that Unity should not proceed with a merger with BOF.

    On the afternoon of April 29, 1998, Mr. Burstein convened a telephonic
meeting of the Unity board to apprise its members of the results of his
conversations with Messrs. Kidrin and Greenberg on April 27, 1998. Like Mr.
Burstein, the other members of the Unity board were generally familiar with
Worlds, having been briefed from time to time by Mr. Burstein in individual
conversations given the fact that each was a shareholder of Worlds by virtue of
their prior equity interests in ACS. After reflecting upon Mr. Burstein's
recounting of his April 27, 1998 briefing by Messrs. Kidrin and Greenberg,
reviewing the several Acquisition Criteria, being also apprised by Mr. Burstein
of Mr. Greenberg's apparent relationships in the pre-recorded music and
entertainment industries, and noting the absence of any other operating business
as a potential merger partner for Unity, the Unity board unanimously concluded
that Mr. Burstein should immediately enter into the negotiation of merger terms
between Unity and Worlds.

    Several meetings and telephonic discussions were held during the next
several days between Mr. Burstein and persons affiliated with Worlds in an
effort to negotiate the terms of a merger. On May 6, 1998, an agreement was
reached between the parties and a definitive letter of intent executed. A
definitive merger agreement was executed on June 25, 1998, and announced by each
of Unity and Worlds on June 26, 1998.

    On July 24, 1998, a registration statement was filed by Unity with the SEC
covering the Unity securities to be issued in the proposed merger with Worlds.
The registration statement was declared effective by the SEC on September 14,
1998. Meetings of the respective stockholders of Unity and Worlds were held on
October 29, 1998 to consider the proposed merger between Worlds and Unity. Unity
stockholders voted against the proposed merger with Worlds at their October 29,
1998 meeting.

    Following the October 29, 1998 meeting of Unity stockholders, Mr. Burstein
was contacted by a number of persons who expressed varying degrees of interest
in locating a suitable candidate for a potential merger with Unity.

    Mr. Burstein initially informed each of such persons that Unity, under the
terms of its certificate of incorporation, planned to liquidate and distribute
its net assets to public Unity stockholders by January 11, 1999. Mr. Burstein
also advised each of these persons that he would be willing to listen to their
respective presentations and review any written materials they had because if a
proposed merger candidate offered the potential of significant appreciation and
benefit to Unity stockholders, he would request Unity's counsel to explore
Unity's ability to amend its certificate of incorporation to defer liquidation
until such time as the Unity stockholders could vote upon any such merger
proposal.

    On November 25, 1998, Mr. Burstein was introduced by a minority shareholder
of Unity VCA to William Dioguardi of Spencer Trask Securities Incorporated, who
informed Mr. Burstein that Spencer Trask was acting as a financial advisor and
placement agent to GraphOn in a private placement of

                                       13
<PAGE>
GraphOn common stock. Mr. Dioguardi informed Mr. Burstein of recent developments
in GraphOn's business, particularly the possibility of GraphOn's acquisition of
Corel's jBridge technology. Mr. Dioguardi expressed his belief that a merger
between Unity and GraphOn, which would afford GraphOn access to Unity's cash
reserves in addition to the anticipated proceeds of GraphOn's own private
placement, could position GraphOn to achieve significant growth and
profitability.

    Following these discussions, Mr. Burstein requested Unity's counsel to
evaluate the feasibility of seeking Unity shareholder approval of an amendment
to Unity's certificate of incorporation which would permit the Unity board to
defer Unity's liquidation until the Unity shareholders could evaluate and vote
upon a new merger transaction. Counsel considered this issue, reaching a
preliminary conclusion that such an amendment should be permissible. Counsel
then discussed its conclusion with Richards Layton & Finger, a Delaware law
firm.

    On November 30, 1998, Richards, Layton & Finger, P.A. verbally advised
Unity's counsel that such firm was of the preliminary opinion that Unity's
certificate of incorporation could be amended to achieve the result desired by
Mr. Burstein.

    Following receipt of this advice, telephone discussions were held between
Mr. Burstein and other members of the Unity board, during the course of which
Mr. Burstein informed the other board members of the preliminary opinion
expressed by Richards, Layton & Finger, P.A. and of his desire to open
discussions with GraphOn with a view towards negotiating a merger between
GraphOn and Unity.

    On December 2, 1998, Unity's counsel prepared and circulated for review to
GraphOn and GraphOn's counsel a draft letter of intent calling for a merger
between Unity and GraphOn.

    On December 8, 1998, Mr. Burstein met in New York City with Walt Keller,
GraphOn's president and chief executive officer, to discuss the proposed merger
terms. Mr. Dioguardi was present at this meeting as were other representatives
of Spencer Trask. Following this meeting, Unity's counsel prepared and
circulated a revised letter of intent.


    On December 9, 1998, Mr. Burstein, accompanied by Norman Leben, one of
Unity's directors, again met with Mr. Keller in New York City to discuss the
contents of the revised letter of intent. Mr. Dioguardi and Robin Ford,
GraphOn's executive vice president, also participated in these discussions. An
agreement was reached that afternoon on the economic terms of a merger between
Unity and GraphOn. In negotiating the number of shares of Unity common stock to
be issued to the GraphOn shareholders in exchange for their shares of GraphOn,
the respective parties placed primary emphasis upon GraphOn's prospects,
particularly the opportunity to widen GraphOn's product offerings as a
consequence of GraphOn's contemporaneous acquisition of Corel's jBridge
technology. The parties agreed that if GraphOn was able to successfully
integrate the jBridge technology into its products, they could be utilized to
access Windows applications from centrally managed servers. This would enable
GraphOn to offer cross platform access to Windows applications from virtually
any desktop. The parties believed that this feature, which would facilitate
centralized deployment and management of applications while reducing the
complexity and total cost associated with enterprise computing, would
substantially increase the potential appeal of GraphOn's product offerings to
cost-conscious corporate purchasers. The parties also took into account the
potential for GraphOn's entry into the emerging extended enterprise software
market. Consideration was also given to the then imminent closure by GraphOn of
an approximately $5.0 million private equity financing.



    Following the agreement between Unity and GraphOn, Unity's counsel prepared
and circulated a definitive letter of intent, which was signed late in the
afternoon on December 10, 1998 and announced by a press release on the following
day.


    On December 22, 1998, Unity's counsel distributed a proposed merger
agreement to GraphOn and its counsel.

                                       14
<PAGE>
    On January 6, 1999, Mr. Burstein, accompanied by counsel, met with Mr.
Keller and his counsel in Palo Alto, California to discuss the draft merger
agreement and to commence a customary "due diligence" investigation.

    On January 13, 1999, Richards, Layton & Finger, P.A. delivered its written
opinion to Unity to the effect that the provisions in Unity's certificate of
incorporation which prohibit the amendment of Article SEVENTH of the certificate
of incorporation are contrary to Delaware law because they eliminated the rights
granted to the corporation and its shareholders by the DGCL to amend the
corporation's certificate of incorporation if procedures are followed.

    On January 15, 1999, Unity's counsel distributed a revised merger agreement
to GraphOn and its counsel.

    On January 27, 1999, Unity's counsel distributed a further revised merger
agreement to GraphOn and its counsel, reflecting comments received from
GraphOn's counsel on January 26, 1999 upon the prior draft. Following
negotiations between Unity's and GraphOn's respective counsel on January 28,
1999 and again on January 29, 1999, a definitive merger agreement was signed by
Unity and GraphOn on February 1, 1999 and announced by press release on the
following day.

RECOMMENDATIONS OF THE BOARDS OF DIRECTORS AND REASONS FOR THE MERGER

    UNITY.  In considering whether or not to approve the merger, the Unity board
first concluded that GraphOn satisfied, or by the passage of time prior to the
merger or upon its consummation would satisfy, the fair market value requirement
and, further, would also satisfy all of the acquisition criteria, as set forth
in the sixth paragraph under "--Background of Merger" above, excluding only the
opportunity for acquiring operating control of GraphOn in view of the
unwillingness of GraphOn's management to relinquish such control and the Unity
board's lack of expertise in the software industry. The Unity board, however,
did not find it practicable to, and did not, quantify or otherwise attempt to
assign relative weight to each of the several acquisition criteria considered in
reaching its determination.

    The Unity board took note of the financial condition of GraphOn as set forth
in its financial statements and related notes included elsewhere in this joint
proxy statement/prospectus. The Unity board was cognizant of GraphOn's need for
additional financing as expressed in such assumptions but, following discussions
with GraphOn's management and with Spencer Trask, concluded that, in addition to
the approximate $4,406,000 that would be made available to GraphOn through its
projected private placement, Unity's cash resources of approximately $5,400,000,
which would become accessible to GraphOn upon completion of the merger, would
satisfy GraphOn's capital needs for at least two years thereafter.

    The Unity board also took note of the fact that the Unity certificate of
incorporation required Unity to be liquidated and its net assets distributed to
public Unity stockholders if Unity had not effected a merger by November 12,
1998. Notwithstanding this requirement and the possibility that a public Unity
stockholder could initiate an injunctive proceeding in the Delaware Chancery
Court in an effort to compel such liquidation, the Unity board believed that the
public Unity stockholders should be afforded the opportunity to determine
whether Unity should be liquidated, with an immediate distribution of
approximately $5.28 per share, or should merge with GraphOn, with the
possibility but no assurance of significant future appreciation above
liquidation value. No public Unity stockholder either initiated or threatened
litigation to enforce the liquidation provision of the Unity certificate of
incorporation.

    For the reasons set forth above, the Unity board has determined that the
merger is in the best interests of Unity and the Unity stockholders.
Consequently, the Unity board has unanimously approved and adopted the merger
agreement and recommends that the Unity stockholders vote FOR approval and
adoption of the merger agreement and the merger which it contemplates.

                                       15
<PAGE>
    The Unity board determined not to secure an opinion from a recognized
investment banking firm to the effect that the terms of the merger transaction
are fair from a financial point of view to the public Unity stockholders. The
Unity board does not believe that the terms of the merger give rise to any
inherent conflict of interest between Unity's executive officers and directors
and the public Unity stockholders, given the fact that such executive officers
and directors will receive no benefit from the merger that would not otherwise
be available to the public Unity stockholders as a whole. Further, the Unity
board noted that none of Unity's current executive officers or directors were to
become salaried employees of Unity subsequent to the completion of the merger
and, in any event, the merger could be effected only if approved by a vote of a
majority in interest of all public Unity stockholders.

    GRAPHON.  In considering the merger, the GraphOn board noted that the merger
would afford GraphOn access to approximately $5,400,000 in cash through its
acquisition, by virtue of the merger, of Unity's net assets, without the
anticipated cost and uncertainties attendant to GraphOn's own public offering of
securities and the possibility that any such offering might not be successfully
consummated in view of then prevailing market conditions or, alternatively, the
negotiation and uncertain consummation of commercial lending arrangements.

    The GraphOn board also took into account the overhang on the market of the
outstanding but unexercised Unity warrants issued in the Unity IPO and the
potentially depressive effect of such overhang on the market price of the Unity
common stock subsequent to the completion of the merger. The GraphOn board
concluded that the possibility that the Unity IPO warrants would be exercised at
some time prior to their scheduled expiration in November 2002, resulting in
gross proceeds from such exercises of approximately $16,250,000, offset the risk
of such market overhang. In making such determination, the GraphOn board took
note in these regards of the fact that the respective exercise prices of the
Unity IPO warrants were in excess of the price paid by many of the GraphOn
shareholders for their respective interests in GraphOn and, as such, were
anti-dilutive to these GraphOn shareholders. In addition, the GraphOn board also
noted that the current public market for Unity common stock would afford
potential liquidity for the Unity common stock to be acquired by the GraphOn
shareholders in exchange for the GraphOn common stock in the merger.

    After careful consideration, the GraphOn board determined not to secure an
opinion of an independent investment banker or other financial advisor to the
effect that the merger would be fair, from a financial point of view, to the
GraphOn shareholders due, in part, to the fact that the GraphOn board does not
believe that the terms of the merger give rise to any inherent conflict of
interest between GraphOn's executive officers, directors and principal
shareholders and GraphOn shareholders other than as described in "--Interests of
Certain Persons in the Merger."

    The GraphOn board has determined that the merger is in the best interests of
GraphOn and the GraphOn shareholders. Consequently, the GraphOn board,
unanimously has approved and adopted the merger agreement and recommends that
the GraphOn shareholders vote FOR approval and adoption of the merger agreement
and the merger which it contemplates.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

    As contemplated by the merger agreement, John Cattier, Barry Ridings and
Norman Leben, each presently a member of the Unity board, will resign
immediately prior to the effective time. Lawrence Burstein, presently a member
of the Unity board, will continue as a director of Unity. Immediately following
the merger, Unity has agreed to cause Walter Keller, Thomas A. Bevilacqua, Eric
Kim, Robert Dilworth, August P. Klein and Michael O'Reilly, each currently a
member of the GraphOn board to be elected to the Unity board. Such persons are
referred to in this joint proxy statement/ prospectus as the "designated
directors". The designated directors, together with Mr. Burstein, will comprise
the members of the Unity board subsequent to the effective time and,
consequently, will then control the business and affairs of Unity. The
designated directors hold in the aggregate 2,930,688 shares of GraphOn common
stock and warrants to purchase GraphOn common stock, which will be exchanged for
an aggregate of 1,634,151 shares of Unity merger stock and warrants to purchase
Unity common stock. See "Principal Shareholders of GraphOn."

                                       16
<PAGE>
TAX CONSEQUENCES OF THE MERGER

    The merger is intended to be a "reorganization" within the meaning of
Section 368(a) of the Internal Revenue Code of 1986. As a consequence:

    - neither Unity nor GraphOn will recognize any gain or loss in the merger
      and

    - neither the Unity stockholders nor the GraphOn shareholders will recognize
      any gain or loss in the merger, except for tax payable by GraphOn
      shareholders because of cash received instead of fractional shares of
      Unity common stock.

    Cooperman Levitt Winikoff Lester & Newman, P.C., as counsel to Unity, has
rendered to Unity an opinion dated as of the date of this joint proxy
statement/prospectus to the effect that the merger will be treated, for federal
income tax purposes, as a "reorganization" within the meaning of Section 368(a)
of the code.

    Brobeck, Phleger & Harrison LLP, as counsel to GraphOn, has rendered to
GraphOn an opinion dated as of the date of this joint proxy statement/prospectus
to the effect that the merger will be treated, for federal income tax purposes,
as a "reorganization" within the meaning of Section 368(a) of the code.

    THE TAX DISCUSSION SET FORTH ABOVE IS INCLUDED FOR GENERAL INFORMATION ONLY
AND IS BASED UPON PRESENT LAW. EACH UNITY AND GRAPHON SHAREHOLDER SHOULD CONSULT
HIS OR HER TAX ADVISOR AS TO THE SPECIFIC TAX CONSEQUENCES OF THE MERGER TO HIM
OR HER, INCLUDING THE APPLICATION AND EFFECT OF FEDERAL, STATE, LOCAL AND OTHER
TAX LAWS AND THE POSSIBLE EFFECTS OF CHANGES IN FEDERAL LAW OR OTHER TAX LAWS.

THE MERGER AGREEMENT

    GENERAL.  The merger agreement provides that, at the effective time, each
then outstanding share of GraphOn common stock will be converted into the right
to immediately receive approximately .5576 of a share of Unity Common stock, or
an aggregate of approximately 9,086,961 shares of Unity common stock. The
exchange ratio was established through arms-length negotiations between Unity
and GraphOn.

    The merger agreement further provides that, at the effective time, GraphOn
will be merged with and into Unity. The certificate of incorporation of Unity,
as the surviving corporation, will be amended at the effective time to change
Unity's name to "GraphOn Corporation."

    Upon completion of the merger and assuming none of the GraphOn shareholders
exercise their appraisal rights, the GraphOn shareholders will own approximately
82.9% of the then outstanding shares of Unity common stock. Giving effect to the
exercise of all Unity exchange options, Unity merger warrants, Unity IPO
warrants, Unity directors' warrants, the Unity Underwriters' IPO securities, and
the Class A redeemable common stock purchase warrant to be issued to Spencer
Trask, a maximum of an additional 4,858,185 shares of Unity common stock will be
issuable upon completion of the merger. On a fully diluted basis, the GraphOn
shareholders would collectively own a maximum of approximately 65.9% of the then
outstanding Unity common stock.

    None of the shares of Unity common stock will be converted or otherwise
modified in the merger and all of such shares will continue to be outstanding
capital stock of Unity after the effective time.

    REPRESENTATIONS AND WARRANTIES.  The merger agreement contains various
representations and warranties of GraphOn and Unity relating to, among other
things:

    - each of Unity's and GraphOn's organization and similar corporate matters;

    - each of Unity's and GraphOn's capital structure;

    - the authorization, execution, delivery, performance and enforceability of
      the merger agreement and related documentation;

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<PAGE>
    - the absence of any governmental or regulatory authorization, consent or
      approval to complete the merger;

    - the documents and reports filed by Unity with the SEC and the accuracy of
      the information contained in such documents or reports;

    - the absence of liabilities identified in the merger agreement;

    - the absence of material events or changes identified in the merger
      agreement;

    - litigation;

    - in the case of GraphOn, rights to use of its intellectual property and the
      functional compliance of its computer software;

    - the accuracy of the information provided by GraphOn and Unity with respect
      to the registration statement to be filed by Unity in connection with
      resales of shares of Unity merger stock by GraphOn shareholders subsequent
      to the merger and this joint proxy statement/prospectus;

    - compliance with laws and material agreements;

    - taxes;

    - retirement and other employee benefit plans and matters relating to the
      Employee Retirement Income Security Act of 1974, as amended;

    - accounting matters identified in the merger agreement;

    - financial statements; and

    - the absence of labor controversies identified in the merger agreement.

    COVENANTS.  Pursuant to the merger agreement, GraphOn and Unity have agreed
with the other that, during the period from the date of the merger agreement
until the effective time, except as permitted by the merger agreement, including
those provisions set forth or described in this joint proxy
statement/prospectus, or as consented to in writing by the other, each will:

    - conduct its business in the ordinary and usual course and consistent with
      past practice;

    - not split, combine or reclassify its outstanding capital stock or declare
      any dividend or distribution;

    - not issue, sell, pledge or dispose of any additional shares, or any
      options or rights to acquire additional shares, of capital stock, other
      than

    - in connection with the exercise of outstanding options or warrants, and

    - in the case of GraphOn it may:

     - grant options to acquire shares of GraphOn common stock to both present
       and future employees under GraphOn's 1998 stock option/stock issuance
       plan;

     - offer and sell shares of GraphOn common stock in one or more private
       transactions at a price of not less than $1.00 per share to an aggregate
       maximum of $4,175,000 and may issue warrants to acquire shares of GraphOn
       common stock in customary amounts to placement agents who facilitate such
       sales;

     - issue shares of GraphOn common stock as well as warrants to purchase
       shares of GraphOn common stock to non-affiliated persons and entities for
       the purposes of purchasing or licensing technology which, in the
       reasonable judgment of GraphOn's board, is necessary or desirable for
       GraphOn's growth and development; and

     - issue up to an aggregate maximum of 100,000 shares of GraphOn common
       stock to entities which currently provide services to GraphOn for
       services rendered;

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<PAGE>
    - not redeem any shares of capital stock except as permitted by the terms of
      such securities;

    - not acquire or dispose of any material assets or properties other than in
      the ordinary course of business;

    - preserve the goodwill and business relationships with its suppliers,
      distributors, customers and others;

    - confer on a regular basis with the other on material operational matters;

    - in the case of Unity, file with the SEC all forms, statements, reports and
      documents required to be filed pursuant to the Exchange Act; and

    - prior to the effective time, afford each other reasonable access during
      normal business hours to its properties, books, contracts, commitments and
      records.

    NO SOLICITATION OF OTHER TRANSACTIONS.  The merger agreement provides that
GraphOn and its officers, directors, representatives and agents will not solicit
any proposal or offer to acquire all or any substantial part of the business or
capital stock of GraphOn from any person other than Unity. In this regard,
GraphOn has agreed that any person inquiring as to the availability of the
business or shares of capital stock of either GraphOn or any of its subsidiaries
or making an offer therefor will be told that GraphOn is bound by the provisions
of the merger agreement. Each of GraphOn and its officers, directors,
representatives and agents further agreed to advise Unity promptly of any such
inquiry or offer. The merger agreement also provides for similar restrictions on
Unity and its officers, directors, representatives and agents.

    NO INDEMNIFICATION.  The merger agreement does not provide for any
indemnification to either GraphOn or Unity for any costs or expenses, judgments,
fines, losses, claims, damages, liabilities and amounts paid in settlement
arising out of, relating to or in connection with any misrepresentation or
breach of representations, warranties or covenants contained in the merger
agreement.

    CONDITIONS TO THE MERGER.  The respective obligations of Unity and of
GraphOn to complete the merger are subject to a number of conditions, including,
but not limited to:

    - the merger agreement shall have been approved and adopted by the Unity
      stockholders, and the holders of no more than 19.99% in interest of the
      Unity common stock held by public Unity stockholders shall have voted
      against the merger and affirmatively requested conversion of their shares
      of Unity common stock into cash;

    - the merger shall have been approved and adopted by the GraphOn
      shareholders;

    - the charter amendment shall have been approved and adopted by the Unity
      stockholders;

    - the registration statement shall have become effective and no stop order
      suspending such effectiveness shall have been issued and remain in effect;

    - no preliminary or permanent injunction or other order or decree by any
      federal or state court or any action by any state or federal governmental
      agency preventing the completion of the merger shall have been issued or
      taken and remain in effect; and

    - all consents, orders and approvals legally required shall have been
      obtained and be in effect at the effective time.

    In addition to the conditions set forth above, the obligations of Unity to
complete the merger are subject to the following conditions:

    - GraphOn shall have performed in all material respects its agreements
      contained in the merger agreement and all representations and warranties
      of GraphOn contained in the merger agreement shall be true and correct in
      all material respects on and as of the date made and the closing date;

                                       19
<PAGE>
    - the receipt of written opinions from counsel to and independent public
      accountants of GraphOn and counsel to Unity;

    - the absence of material adverse changes in the business, operations,
      properties, assets, financial or other condition, results of operations or
      prospects of GraphOn;

    - GraphOn's outstanding securities shall be unchanged in amount except as
      contemplated by the merger agreement;

    - the officers, directors and principal shareholders of GraphOn ("GraphOn
      principals") shall have executed agreements pursuant to which they will
      agree for a period of six months following the effective time of the
      merger not to sell, transfer or otherwise dispose of any shares of Unity
      common stock acquired in the merger other than for dispositions to family
      members who consent to the same restrictions (the "lock-up");

    - each of the holders of the private placement shares shall be subject to
      the lock-up;

    - the GraphOn principals shall have executed an agreement pursuant to which,
      for a period of three years following the effective time of the merger,
      they agree to vote their shares of Unity common stock in favor of a slate
      of directors of Unity which includes one designee of the current Unity
      board, and the remaining nominees being designees of the GraphOn
      principals (the "voting agreement"); and

    - the holders of no greater than 10% in the aggregate in interest of GraphOn
      common stock shall have perfected their statutory dissenters' rights with
      respect to the merger.

    In addition, the obligations of GraphOn to effect the merger are subject to
the following conditions:

    - Unity shall have performed in all material respects its agreements
      contained in the merger agreement and the representations and warranties
      of Unity contained in the merger agreement shall be true and correct in
      all material respects on and as of the date made and the closing date;

    - the receipt of written opinions from counsel to and independent public
      accountants of Unity and counsel to GraphOn;

    - the absence of material adverse changes in the business, operations,
      properties, assets, condition or prospects of Unity and Unity shall have
      engaged in no business activity since its IPO other than seeking to effect
      a merger;

    - Unity shall have at the closing date at least an aggregate of $6,000,000
      in cash or cash equivalents after giving effect to the payment on the
      closing date of all expenses incurred by Unity attendant to the
      transactions contemplated by the merger agreement, including the fees and
      expenses of Unity's attorneys and accountants, and before giving effect to
      any payments required to be paid to Unity stockholders exercising their
      conversion rights under Unity's certificate of incorporation;

    - Unity's outstanding securities shall be unchanged in amount except as
      contemplated by the merger agreement;

    - the officers, directors and principal stockholders of Unity ("Unity
      principals") shall be subject to the lock-up;

    - the Unity principals shall have executed the voting agreement whereby they
      will agree to vote their shares in favor of the election of an agreed-upon
      slate of directors for a period of three years;

                                       20
<PAGE>
    - the holders of no greater than 19.99% in the aggregate in interest of the
      Unity common stock held by Unity's public stockholders shall have
      exercised their conversion rights under Unity's certificate of
      incorporation;

    - the officers and directors of Unity shall have resigned their respective
      positions as officers and directors of Unity, except that Lawrence
      Burstein shall resign only as an officer of Unity; and

    - the holders of no greater than 10% in the aggregate in interest of Unity
      common stock shall have perfected their statutory dissenters' rights with
      respect to the merger.

    TERMINATION.  The merger agreement may be terminated prior to the closing
date:

    - at any time by mutual consent of the boards of Unity and of GraphOn;

    - by either GraphOn or Unity after July 31, 1999, if the merger shall not
      have been consummated on or before such date, so long as the party
      terminating has not breached its obligations under the merger agreement;

    - unilaterally by Unity

     - if GraphOn materially breaches any material representation or warranty of
       GraphOn set forth in the merger agreement,

     - upon GraphOn's willful failure to comply with or satisfy any material
       covenant or condition of GraphOn contained in the merger agreement,

     - upon the occurrence of an event having a material adverse effect on the
       business, properties, assets, condition or results of operations of
       GraphOn or on its ability to consummate the merger or

     - if GraphOn shareholders fail to approve the merger agreement at the
       GraphOn meeting; or

    - unilaterally by GraphOn

     - if Unity materially breaches any material representation or warranty of
       Unity set forth in the merger agreement,

     - upon Unity's willful failure to comply with or satisfy any material
       covenant or condition of Unity contained in the merger agreement,

     - upon the occurrence of an event having a material adverse effect on the
       business, properties, assets, condition or results of operations of Unity
       or on its ability to consummate the merger or

     - if Unity stockholders fail to approve the merger at the Unity meeting.

    In the event of termination of the merger agreement by either GraphOn or
Unity as provided above, the merger agreement shall become void and there will
be no further obligation on the part of any of GraphOn or Unity, other than
preserving the confidentiality of confidential information of the other provided
in connection with the merger.

    AMENDMENT AND WAIVER.  At any time prior to the effective time, GraphOn or
Unity may

    - extend the time for the performance of any of the obligations or other
      acts to be performed by the other pursuant to the merger agreement;

    - waive any inaccuracies in the representations and warranties by the other
      contained in the merger agreement or in any other document delivered
      pursuant to the merger agreement; and

    - waive compliance with any of the agreements of the other or conditions
      precedent to their respective obligations contained in the merger
      agreement.

                                       21
<PAGE>
    Subject to applicable law, the merger agreement may be amended at any time
before or after its approval by the Unity stockholders or the GraphOn
shareholders by the written agreement of GraphOn and Unity. Under applicable
law, neither GraphOn nor Unity may amend the merger agreement subsequent to
obtaining approval of their respective shareholders if such amendments would

    - alter or change the amount or kind of shares, securities, cash, property
      and/or rights to be received in exchange for shares of such corporation;

    - alter or change any term of the certificate of incorporation of Unity
      following the merger; or

    - alter or change any of the terms and conditions of the merger agreement if
      such alteration or change would adversely affect the Unity stockholders or
      the GraphOn shareholders.

ABSENCE OF REGULATORY FILINGS AND APPROVALS

    The merger is not subject to the requirements of the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, and the rules and regulations promulgated
pursuant to such act, which provide that merger transactions that are within
parameters set forth in such act may not be consummated until required
information and materials have been furnished to the Antitrust Division of the
Department of Justice and the Federal Trade Commission and waiting periods have
expired or been terminated.

RESTRICTIONS ON SALES BY AFFILIATES AND OTHER SHAREHOLDERS

    The 9,086,961 shares of Unity common stock to be issued in the merger as
well as the shares underlying the GraphOn warrants and the Class A redeemable
common stock purchase warrants to be issued to Spencer Trask upon consummation
of the merger are expected to be registered under the Securities Act as of the
effective time. In such event, all of these securities will be freely
transferable under the Securities Act. However, the merger agreement provides
that all of the current officers and directors of GraphOn, the GraphOn principal
shareholders and their respective affiliates, as well as the holders of the
private placement shares, will enter into an agreement not to sell, pledge,
transfer or otherwise dispose of any of their respective shares of Unity merger
stock for a period of six months from the effective time. Thereafter, each such
person may sell the balance, if any, of his, her or its Unity merger stock at
any time, subject to any restrictions imposed by law. The executive officers and
directors of Unity and the Unity principals and their respective affiliates have
agreed to identical restrictions.

ACCOUNTING TREATMENT

    The merger will be treated as a capital transaction equivalent to the
issuance of stock by GraphOn for Unity's net monetary assets of approximately
$6,000,000, less of a fee of up to $575,000 payable to Spencer Trask upon
consummation of the merger.

EXPENSES

    The merger agreement provides that, whether or not the merger is completed,
all expenses incurred in connection with the merger agreement and the merger
which it contemplates will be paid by the party incurring such expenses.

CONVERSION RIGHTS

    A condition to the completion of Unity's IPO, imposed upon Unity by the IPO
underwriters, was a requirement that Unity not proceed with any merger with an
operating business if 20% or more in interest of Unity common stock held by
public Unity stockholders request conversion of their respective shares into
cash and also vote against such merger. Consequently, each public Unity
stockholder as of the Unity record date will have the right until June   , 1999
(the "conversion notification date") to offer his or her shares of Unity common
stock to Unity for conversion to cash at an amount equal to

                                       22
<PAGE>
approximately $5.28 per share (the "conversion value"). Any such request for
conversion, once made, may be withdrawn at any time up to and through the
conversion notification date. The conversion value is equal to the amount held
in a trust account, inclusive of any interest thereon, divided by the number of
shares of Unity common stock held by all public Unity stockholders, as
determined by Unity and audited by its independent public accountants,
calculated as of the Unity record date. If less than 20% in interest of Unity
common stock held by public Unity stockholders who vote against approval of the
merger also elect to have their shares of Unity common stock converted into
cash, and the merger is completed, Unity will convert into cash shares of Unity
common stock at the conversion value from those public Unity stockholders who
affirmatively requested such conversion and who actually voted against approval
of the merger. If 20% or more in interest of Unity common stock held by public
Unity stockholders actually vote against approval of the merger and
affirmatively request conversion of their shares of Unity common stock, Unity
will not proceed with the merger and will not convert such shares into cash. In
such event, Unity's certificate of incorporation requires that Unity be
liquidated.

    A public Unity stockholder wishing to exercise his or her conversion rights:

    - must deliver to Unity, prior to or on but in no event later than the
      conversion notification date, a written objection to the merger (the
      "notice of election"), which shall include a notice of his or her election
      to convert into cash his or her Unity common stock, his or her name and
      residence address, the number of shares of Unity common stock which he or
      she owns and demand for payment of the conversion value of his or her
      shares of Unity common stock which notice of election must be in addition
      to and separate from any proxy or vote against the merger and

    - must vote against the merger.

A vote against the merger, in person or by proxy, will in and of itself not
constitute a written objection to the merger satisfying the requirements for
exercise of the conversion rights. In addition, a proxy directing such vote for
an abstention, even if accompanied by a notice of election, will not meet the
requirements for exercise of the conversion rights. A public Unity stockholder
who elects to convert into cash his or her shares of Unity common stock may not
convert less than all of the shares of Unity common stock beneficially owned by
such shareholder as of the Unity record date. Public Unity stockholders who
timely file a notice of election and who vote their Unity common stock against
the merger are hereinafter referred to in this joint proxy statement/prospectus
as "converting shareholders."

ALL NOTICES OF ELECTION SHOULD BE ADDRESSED TO UNITY FIRST ACQUISITION CORP.,
245 FIFTH AVENUE, NEW YORK, NEW YORK 10016; ATTN.: LAWRENCE BURSTEIN, PRESIDENT.

    Any public Unity stockholder whose shares are held in street name may
exercise his or her conversion rights by instructing his or her broker to
prepare and deliver a notice of election to Unity within the time frame and
containing the information set forth in the second paragraph above, except that
in lieu of setting forth the name and residence address of the public Unity
stockholder, it should recite the name and address of the applicable brokerage
firm and a statement to the effect that the notice of election is being
submitted on behalf of a customer whose shares are held in street name, without
identifying the customer. In addition, such public Unity stockholder should
instruct the broker to vote his or her street name shares against the merger.

    At the effective time, each converting shareholder will cease to have any of
the rights of a Unity stockholder, except the right to be paid the conversion
value for his or her shares of Unity common stock. To maintain his or her
position as a converting shareholder, a public Unity stockholder, or his or her
broker in the case of shares held in street name, must submit the certificate
representing his or her shares of Unity common stock to Unity or its transfer
agent as noted below. A notice of election may be withdrawn by a public Unity
stockholder, or his or her broker, with the written consent of Unity, prior to
20 days following the effective time.

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<PAGE>
    Within ten days after the date on which Unity stockholders approve the
merger, Unity will send written notice of such approval ("notice of approval of
merger"), including the per share conversion value, by certified or registered
mail to each shareholder of Unity who filed a notice of election and who voted
his or her shares against adoption of the merger.

    Within 20 days following the date of mailing of the notice of approval of
merger, converting stockholders must submit certificates representing their
shares of Unity common stock to Unity or its transfer agent. Within 30 days
following the date of mailing of the notice of approval of merger, Unity will
pay each converting stockholder who has submitted the certificates representing
his or her shares of Unity common stock to Unity or its transfer agent the
conversion value for such shares. ANY CONVERTING STOCKHOLDER WHO FAILS TO SUBMIT
HIS OR HER CERTIFICATES REPRESENTING UNITY COMMON STOCK WITHIN 20 DAYS FOLLOWING
THE DATE OF MAILING OF THE NOTICE OF APPROVAL OF MERGER SHALL LOSE HIS OR HER
CONVERSION RIGHTS.

APPRAISAL RIGHTS

    UNITY

    Pursuant to Section 262 of the DGCL, the holder of record of any shares of
Unity common stock who does not vote such holder's shares in favor of adoption
and approval of the merger may assert appraisal rights and elect to have the
"fair value" of such holder's shares of Unity common stock determined and paid
to such holder, provided that such holder complies with the requirements of
section 262 of the DGCL, summarized below. All references to and summaries of
the rights of the dissenting shareholders are qualified in their entirety by
reference to the text of section 262 of the DGCL which is attached to this joint
proxy statement/prospectus as Exhibit D.

    Any stockholder entitled to vote on the merger who desires that Unity
purchase shares of Unity common stock held by such stockholder (the "dissenting
shares") must not vote in favor of adoption and approval of the merger. Shares
of Unity common stock voted in favor of adoption and approval of the merger will
be disqualified as dissenting shares.

    Stockholders whose shares are not voted in favor of adoption and approval of
the merger and who, in all other respects, follow the procedures specified in
section 262, will be entitled to have their Unity common stock appraised by the
Delaware Court of Chancery and to receive payment of the "fair value" of such
shares, exclusive of any element of value arising from the accomplishment or
expectation of the merger, as determined by the Court. The procedures set forth
in section 262 must be strictly complied with. Failure to follow any such
procedures will result in a termination or waiver of appraisal rights under
section 262.

    Under section 262, a holder of Unity common stock electing to exercise
appraisal rights must:

        (1) Deliver to Unity, before taking of the vote on the merger, a written
    demand for appraisal of such holder's Unity common stock which reasonably
    informs Unity of the identity of the stockholder of record and that such
    record stockholder intends to demand appraisal of such holder's shares. Such
    written demand is in addition to and separate from any proxy or vote with
    respect to the merger. Neither a vote against or abstention from voting with
    respect to the merger nor a proxy directing such vote will satisfy the
    requirement that a written demand for appraisal be delivered to Unity before
    the vote on the merger. Such written demand for appraisal should be
    delivered either in person to the Secretary of Unity at the Unity meeting on
    or before the vote on the merger or in person or by mail to the Secretary,
    prior to the Unity meeting, at 245 Fifth Avenue, New York, New York 10016.

        (2) Not vote in favor of, or consent in writing to, the merger. A
    failure to vote against the merger will not constitute a waiver of appraisal
    rights. However, a stockholder who signs and returns a proxy without
    expressly directing (by checking the applicable box on the proxy card

                                       24
<PAGE>
    enclosed herewith) that such stockholder's shares be voted against the
    merger or that an abstention be registered with respect to such shares of
    Unity common stock in connection with such merger will effectively have
    waived his or her appraisal rights as to those shares because, in the
    absence of express contrary instructions, such shares will be voted in favor
    of the merger. Accordingly, a stockholder who desires to perfect appraisal
    rights with respect to any shares must, as one of the procedural steps
    involved in such perfection, either:

    - refrain from executing and returning the enclosed proxy card or voting in
      person in favor of Proposal No. 2 on such card or

    - check either the "Against" or the "Abstain" boxes next to such proposal on
      such card or vote in person against the merger or register in person an
      abstention with respect to such proposal.

    The written demand for appraisal must be made by or for the holder of record
of shares of Unity common stock. Accordingly, such demand must be executed by or
for such stockholder of record, fully and correctly, as such stockholder's name
appears on the stock certificates representing the shares. If the applicable
shares are owned of record in a fiduciary capacity, such as by a trustee,
guardian or custodian, execution of the demand should be made in such capacity,
and if the applicable shares are owned of record by more than one person, as in
a joint tenancy or tenancy in common, such demand should be executed by or for
all joint owners. An authorized agent, including one of two or more joint
owners, may execute the demand for appraisal for a stockholder of record.
However, the agent must identify the record owner(s) and expressly disclose the
fact that, in executing the demand, the agent is acting as agent for the record
owner(s).

    A record owner, such as a broker, who holds shares as nominee for other
persons may exercise appraisal rights with respect to the shares held for all or
less than all of such other persons. In such case, the written demand should set
forth the number of shares covered by it. Where no number of shares expressly is
mentioned, the demand will be presumed to cover all shares standing in the name
of such record owner.

    Within 10 days after the effective time, Unity is required to, and will,
notify each stockholder who has satisfied the foregoing conditions of the date
on which the effective time occurred and that appraisal rights are available
with respect to shares for which a demand has been submitted. Within 120 days
after the effective time, Unity, or any such stockholder who has satisfied the
foregoing conditions and otherwise is entitled to appraisal rights under section
262, may file a petition in the Court demanding a determination of the value of
the shares held by all stockholders entitled to appraisal rights. If no such
petition is filed, appraisal rights will be lost for all stockholders who
previously had demanded appraisal of their shares. Stockholders of Unity seeking
to exercise appraisal rights should not assume that Unity will file a petition
with respect to the appraisal of the value of their shares or that Unity will
initiate any negotiations with respect to the "fair value" of such shares.
Accordingly, such stockholders should regard it as their obligation to take all
steps necessary to perfect their appraisal rights in the manner prescribed in
section 262.

    Within 120 days after the date of the effective time, any stockholder who
has complied with the applicable provisions of section 262 will be entitled,
upon written request, to receive from Unity a statement setting forth the
aggregate number of shares not voted in favor of the merger and with respect to
which demands for appraisal were received by Unity, and the number of holders of
such shares. Such statement must be mailed within ten days after the written
request therefor has been received by Unity or within ten days after expiration
of the period for delivery of demands for appraisal, whichever is later.

    If a petition for an appraisal is timely filed, at the hearing on such
petition the Court will deter-
mine the stockholders of Unity entitled to appraisal rights. After determining
the stockholders entitled to an appraisal, the Court will appraise the value of
the shares of Unity common stock owned by such stockholders, determining the
"fair value" of such shares exclusive of any element of value arising from

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<PAGE>
the accomplishment or expectation of the merger. The Court will direct payment
by Unity of the fair value of such shares together with a fair rate of interest,
if any, on such fair value to stockholders entitled thereto upon surrender to
Unity of Unity stock certificates. The costs of the proceeding may be determined
by the Court and taxed upon the parties as the Court deems equitable in the
circumstances. Upon application of a stockholder, the Court may, in its
discretion, order that all or a portion of the expenses incurred by any
stockholder in connection with an appraisal proceeding, including, without
limitation, reasonable attorneys' fees and fees and expenses of experts, be
charged pro rata against the value of all the shares entitled to appraisal.

    Although Unity believes that the merger is fair, no representation is made
as to the outcome of the appraisal of fair value as determined by the Court and
stockholders should recognize that such appraisal could result in a
determination of a value higher or lower than, or the same as, the conversion
value. Moreover, Unity does not presently anticipate offering more than the
conversion value to any stockholder exercising appraisal rights and reserves the
right to assert, in any appraisal proceeding, that, for purposes of section 262,
the "fair value" of a share of Unity common stock is less than the conversion
value. In determining the "fair value" of shares of Unity common stock, the
Court is required to take into account all relevant factors. Therefore, such
determination could be based upon considerations other than, or in addition to,
the price paid for shares of Unity common stock, including, without limitation,
the market value of shares and the asset values and earning capacity of Unity.
In WEINBERGER V. UOP, INC., ET AL., 457 A.2d 701,713 (Del. 1983), the Delaware
Supreme Court stated, among other things, that "proof of value by any techniques
or methods which are generally considered acceptable in the financial community
and otherwise admissible in court" should be considered in an appraisal
proceeding. Section 262 provides that "fair value" is to be "exclusive of any
element of value arising from the accomplishment or expectation of the merger."
In WEINBERGER, the Delaware Supreme Court held that "elements of future value,
including the nature of the enterprise, which are known or susceptible of proof
as of the date of the merger and not the product of speculation, may be
considered." Id.

    Any holder of shares of Unity common stock who has demanded an appraisal in
compliance with section 262 will not, after the effective time of the merger, be
entitled to vote such holder's shares for any purpose nor be entitled to the
payment of dividends or other distributions on such shares other than those
payable to stockholders of record as of a date prior to the effective time of
the merger.

    If no petition for an appraisal is filed within 120 days after the date of
the effective time or if a holder of shares delivers to Unity a written
withdrawal of such holder's demand for an appraisal and an acceptance of the
merger, either within 60 days after the effective time or with the written
approval of Unity after such period, then the right of such stockholder to an
appraisal will cease and such stockholder will remain a stockholder of Unity.
Unity reserves the right to give or withhold such written approval in its sole
discretion. No appraisal proceeding in the Court will be dismissed as to any
stockholder without the approval of the Court, which approval may be conditioned
on such terms as the Court deems just.

    Also see "--Conversion Rights" above.

    GRAPHON

    If the merger agreement is approved by the required consent or vote of
GraphOn shareholders and is not abandoned or terminated, GraphOn shareholders
who did not consent to or vote in favor of the merger may, by complying with
Chapter 13 of the California Corporations Code (the "CCC"), be entitled to
dissenters' rights as described in the CCC. The record holders of the shares of
GraphOn common stock that elect to exercise their dissenters' rights with
respect to the merger are referred to in this joint proxy statement/prospectus
as "GraphOn dissenting shareholders," and the shares of GraphOn common stock
with respect to which they exercise dissenters' rights are referred to in this
joint proxy statement/prospectus as "GraphOn dissenting shares." If a GraphOn
shareholder has a

                                       26
<PAGE>
beneficial interest in shares of GraphOn common stock that are held of record in
the name of another person, such as a broker or nominee, and such GraphOn
shareholder desires to perfect whatever dissenters' rights such beneficial
GraphOn shareholder may have, such beneficial GraphOn shareholder must act
promptly to cause the holder of record timely and properly to follow the steps
summarized below.

    A VOTE IN FAVOR OF THE MERGER BY A GRAPHON SHAREHOLDER WILL RESULT IN A
WAIVER OF SUCH HOLDER'S RIGHT TO DISSENTERS' RIGHTS.

    The following discussion is not a complete statement of the CCC relating to
dissenters' rights, and is qualified in its entirety by reference to Chapter 13
of the CCC attached to this joint proxy statement/ prospectus as Exhibit E and
incorporated to this joint proxy statement/prospectus by reference. This
discussion and Chapter 13 of the CCC should be reviewed carefully by any holder
who wishes to exercise statutory dissenters' rights or wishes to preserve the
right to do so, since failure to comply with the required procedures in a timely
manner will result in the loss of such rights.

    A GraphOn shareholder who wishes to become a GraphOn dissenting shareholder
must:

    - not vote any of the shares he or she wishes to qualify as GraphOn
      dissenting shares in favor of the merger;

    - make written demand upon GraphOn, not later than 30 days after the date on
      which the notice of approval by the outstanding shares described below was
      mailed, setting forth in his or her demand the number and class of shares
      of which he or she demands that GraphOn purchase and a statement by such
      shareholder as to what he or she believes the fair market value of such
      shares to have been as of the day before the announcement of the merger;
      and

    - submit for endorsement, within 30 days after the date on which the notice
      of approval of the merger by the GraphOn shareholders described below was
      mailed to such shareholder, at the principal office of GraphOn, the
      certificates representing any shares for which demand for purchase is
      being made with a statement specifying that such shares are dissenting
      shares.

Neither a vote against approval of the merger nor the giving of a proxy
directing a negative vote will be sufficient to constitute the demand described
in clause (ii) above.

    Written demands, notices or other communications which a GraphOn shareholder
wishes to send to GraphOn concerning the exercise of dissenters' rights should
be addressed to:

                                    GraphOn Corporation
                                  150 Harrison Avenue
                                  Campbell, CA 95008
                                  Attention: Walt Keller

    Within ten days after the date of the approval of the merger, GraphOn shall
mail a notice of the approval of the merger to each GraphOn shareholder who has
not voted to approve the merger, together with a brief description of the
procedure to be followed if the shareholder wishes to exercise his or her
dissenters' rights and a statement of the price determined to represent the fair
market value of the dissenting shares. If the GraphOn dissenting shareholder and
GraphOn agree upon the price and that the shares qualify as GraphOn dissenting
shares, the GraphOn dissenting shareholder will be entitled to the agreed upon
price plus the legal rate of interest on judgments from the date of such
agreement, subject to surrender, by the GraphOn dissenting shareholder, of his
or her certificates representing the GraphOn dissenting shares to GraphOn. If
the dissenting shareholder and GraphOn fail to agree upon the fair market value
of the GraphOn dissenting shares or whether the shares qualify as GraphOn
dissenting shares, the GraphOn dissenting shareholder may file a complaint with
the California Superior Court within six months after the date on which notice
of the approval of the merger is mailed to shareholders requesting that the
court determine the fair market value of the GraphOn dissenting shares and/or
whether the shares qualify as GraphOn dissenting shares.

                                       27
<PAGE>
    Under the provisions of Section 500 et seq. and Section 1306 of the CCC, a
California corporation is legally prohibited from purchasing shares of stock
through the payment of cash or other property, even if all dissenters rights
conditions are fulfilled, unless the corporation satisfies financial conditions
set forth in the CCC. Due to these legal restrictions, GraphOn may not be
legally able to repurchase all or any GraphOn dissenting shares of the
dissenting shareholders for cash following the merger.

    To the extent that the above-mentioned provisions of the CCC prohibit cash
payments to holders of GraphOn dissenting shares who exercise and perfect their
dissenters' rights, such GraphOn dissenting shareholders will become creditors
of GraphOn for an amount equal to the fair market value of their shares as to
which the dissenters' rights are perfected plus interest accrued thereon at the
legal rate on judgments until the date of payment. The rights of such GraphOn
dissenting shareholders, however, will be subordinate to the rights of all other
creditors of GraphOn in any liquidation proceeding.

    GraphOn dissenting shareholders considering seeking appraisal should be
aware that the fair value of their shares of GraphOn common stock, as determined
under Chapter 13 of the CCC, could be more than, the same as or less than the
amount that would be paid to them pursuant to the merger agreement. The costs
and expenses of the appraisal proceeding will be determined by the court and
assessed against GraphOn unless the court determines that the GraphOn dissenting
shareholder did not act in good faith in demanding payment of the fair value of
his shares, in which case such costs and expenses may be assessed against the
GraphOn dissenting shareholder.

OPERATIONS AFTER THE MERGER

    DIRECTORS AND EXECUTIVE OFFICERS.  In accordance with the merger agreement,
three of the four current members of the Unity board will resign immediately
prior to the effective time. Immediately following the merger, one of the
current directors of Unity and the six current directors of GraphOn will become
the sole members of the Unity board. In addition, all of Unity's executive
officers will resign as of the effective time, to be replaced by GraphOn's
current executive officers.

    The members of the post-merger Unity board will be classified into three
classes, one of which is elected at each annual meeting of stockholders to hold
office for a three-year term and until successors of such class have been
elected and qualified. The respective members of each class of the post-merger
Unity board are set forth below.

    - Class III: Walter Keller and Thomas A. Bevilacqua (3 year initial term)

    - Class II: Robert Dilworth and August Klein (2 year initial term)

    - Class I: Eric Kim, Michael O'Reilly and Lawrence Burstein (1 year initial
      term)

    Each of such persons is currently a director of GraphOn, except Mr.
Burstein, who is currently a director of Unity.

    DIVIDENDS.  Unity does not presently intend to pay any cash dividends as all
available cash will be utilized to further the growth of Unity's business
subsequent to the effective time for the proximate future thereafter. The
payment of any subsequent cash dividends will be in the discretion of the Unity
board and will be dependent upon Unity's results of operations, financial
condition and other factors deemed relevant by the Unity board.

                                       28
<PAGE>
                           PRICE RANGES OF SECURITIES

UNITY

    Unity's common stock, Class A redeemable warrants and Class B redeemable
warrants are each quoted on the OTC Bulletin Board under the symbols UFAC, UFACW
and UFACZ, respectively. The following table sets forth the range of the high
and low bid quotations of such securities on the OTC Bulletin Board for the
periods indicated:
<TABLE>
<CAPTION>
                                                                                                              CLASS A REDEEMABLE
                                                                                COMMON STOCK                       WARRANTS
                                                                             -----------------               --------------------
THREE MONTHS ENDED                                                       HIGH                  LOW                   HIGH
- ---------------------------------------------------------------         ------                ------                ------
<S>                                                              <C>        <C>        <C>        <C>        <C>        <C>
January 31, 1997(1)............................................         $4  3/4        $       4  3/8        $       1  1/4
April 30, 1997.................................................          4  13/16              4  3/8                1  1/8
July 31, 1997..................................................          4  7/8                4  7/16               1  1/4
October 31, 1997...............................................          4  29/32              4  5/8                   13/16
January 31, 1998...............................................          5  1/2                5                     1
April 30, 1998.................................................          5  3/16               4  7/8                1
July 31, 1998..................................................          5  5/16               4  7/8                1  1/4
October 31, 1998...............................................          5  1/16               4  3/4                1
January 31, 1999...............................................          5  9/32               4  23/32                 7/8
April 30, 1999.................................................          7  15/16              5  1/8                2  13/16
June 30, 1999 (through May 21).................................          7  1/8                6  1/8                2  1/2

<CAPTION>

                                                                                              CLASS B REDEEMABLE WARRANTS

                                                                                                    ---------------
THREE MONTHS ENDED                                                       LOW                   HIGH                  LOW
- ---------------------------------------------------------------         ------                ------                 ---
<S>                                                              <C>        <C>        <C>        <C>        <C>        <C>
January 31, 1997(1)............................................  $          7/8               $1  1/4                $  3/4

April 30, 1997.................................................             3/8                   7/8                   1/4

July 31, 1997..................................................             5/16                  7/8                   1/4

October 31, 1997...............................................             1/4                   7/16                  1/8

January 31, 1998...............................................             3/8                   9/16                  1/4

April 30, 1998.................................................             5/8                   1/2                   1/4

July 31, 1998..................................................             1/2                   7/16                  3/8

October 31, 1998...............................................             1/32                  13/32                 1/16

January 31, 1999...............................................             3/64                  1/2                   1/8

April 30, 1999.................................................             7/8                1  3/4                   1/2

June 30, 1999 (through May 21).................................          1  15/16              1  1/2                1  5/32

</TABLE>

- ------------------------

(1) Unity's securities began separate trading on November 21, 1996.

    The above quotations represent prices between dealers and do not include
retail markup, markdown or commission. They do not necessarily represent actual
transactions.

    On February 1, 1999, which was the last trading day prior to the public
announcement of the execution of the merger agreement, the last reported closing
bid prices of Unity common stock, Class A redeemable warrants and Class B
redeemable warrants were $5 13/64, $ 7/8 and $ 1/2, respectively. On that date,
there were 37 recordholders of Unity common stock, although Unity believes that
there are other persons who are beneficial owners of shares of Unity common
stock held in street name.

GRAPHON

    There is not presently, nor has there been in the past, any trading market
for GraphOn common stock.

    On May 15, 1999, there were approximately 211 recordholders of GraphOn
common stock.

                                       29
<PAGE>
                 SELECTED HISTORICAL FINANCIAL DATA OF GRAPHON

    The following selected historical financial data should be read in
conjunction with the historical financial statements of GraphOn and the notes
thereto beginning on page F-1 to this joint proxy statement/prospectus. The
selected financial data of GraphOn as of December 31, 1998 and 1997 and for the
years ended December 31, 1998, 1997 and 1996 have been derived from the
financial statements of GraphOn which have been audited by BDO Seidman LLP,
independent public accountants. The data as of March 31, 1999 and for the three
months ended March 31, 1999 and 1998 have been derived from GraphOn's unaudited
condensed financial statements which, in the opinion of management, include all
adjustments, consisting of only normal recurring adjustments, necessary for a
fair presentation of the information set forth in such financial statements. The
results of operations for the three months ending March 31, 1999 are not
necessarily indicative of results that may be expected for the full year.

<TABLE>
<CAPTION>
                                       THREE MONTHS ENDED
                                            MARCH 31,                      FOR THE YEAR ENDED DECEMBER 31,
                                     -----------------------  ----------------------------------------------------------
STATEMENT OF OPERATIONS DATA:           1999         1998        1998         1997      1996(1)    1995(1)     1994(1)
- -----------------------------------  -----------  ----------  -----------  ----------  ---------  ----------  ----------
<S>                                  <C>          <C>         <C>          <C>         <C>        <C>         <C>
Revenues...........................  $   639,500  $  453,500  $ 2,124,200  $1,926,100  $ 594,800  $  588,117  $1,096,910
Costs of Revenues..................       89,300      79,800      344,200     463,300    335,600     213,502     349,693
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
Gross Profit.......................      550,200     373,700    1,780,000   1,462,800    259,200     374,615     747,217
Operating Expenses:
    Selling and marketing..........      755,600     222,000    1,440,300     827,300    192,700          --          --
    General and administrative.....    1,316,700     107,000    1,118,600     324,700    218,900     388,637     646,656
    Research and development.......      509,400     119,000      840,200     190,500     41,700      58,979      67,150
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
        Total Operating Expenses...    2,581,700     448,000    3,399,100   1,342,500    453,300     447,616     713,806
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
(Loss) Income from Operations......   (2,031,500)    (74,300)  (1,619,100)    120,300   (194,100)    (73,001)     33,411
Other Income (Expense):
    Interest and other income......       14,900       2,500        9,800       7,200      6,400          --          --
    Interest and other expense.....       (6,600)    (20,000)    (521,900)     (2,100)        --          --          --
    Other expense..................           --          --      (16,500)         --         --          --          --
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
(Loss) Income before Provision for
  Income Taxes.....................   (2,023,200)    (91,800)  (2,147,700)    125,400   (187,700)    (73,001)     33,411
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
Provision for Income Taxes.........          800         800          800         900        800          --      15,369
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
Net (Loss) Income..................  $(2,024,000) $  (92,600) $(2,148,500) $  124,500  $(188,500) $  (73,001) $   18,042
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
Pro forma (Loss) Income per share
  (2)..............................  $     (0.13) $    (0.01) $     (0.32) $     0.02  $   (0.03) $    (0.01) $       --
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
Weighted average common shares.....   15,779,199   6,066,667    6,762,667   6,000,000  6,000,000   6,000,000   6,000,000
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
                                     -----------  ----------  -----------  ----------  ---------  ----------  ----------
</TABLE>

<TABLE>
<CAPTION>
BALANCE SHEET DATA:                                          MARCH 31, 1999  DECEMBER 31, 1998  DECEMBER 31, 1997
- -----------------------------------------------------------  --------------  -----------------  -----------------
<S>                                                          <C>             <C>                <C>
Total Assets...............................................   $  6,623,500     $   7,110,500       $   733,300
Total Liabilities..........................................        933,900         1,202,200           615,100
Stockholders' Equity.......................................      5,689,600         5,908,300           118,200
</TABLE>

- ------------------------

(1) During the years ended December 31, 1996, 1995 and 1994, GraphOn was engaged
    in the business of manufacturing, marketing and selling computer terminal
    hardware in an industry significantly different from that in which it
    presently does business. See "Management's Discussion and Analysis of
    Financial Condition and Results of Operations of GraphOn--Overview."

(2) Pro forma (Loss) Income per share is reflected as if GraphOn had been a
    public company since inception.

                                       30
<PAGE>
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                      AND RESULTS OF OPERATIONS OF GRAPHON

    The following description of GraphOn's financial condition and results of
operations should be read in conjunction with the information included in this
joint proxy statement/prospectus. The description contains forward-looking
statements that involve risks and uncertainties. GraphOn's actual results could
differ significantly from the results discussed in the forward-looking
statements as a result of the risk factors set forth below and elsewhere in this
joint proxy statement/prospectus.

OVERVIEW

    GraphOn develops, markets, sells and supports server-based software that is
designed to enable a diverse range of desktop computers to access server-based
Windows and UNIX applications from any location, over fast or slow Internet
connections. GraphOn was incorporated in May 1982 and engaged in the development
and manufacture of hardware computer terminals. In 1995, GraphOn started to
transition from a hardware to a software manufacturer by working with three
independent software developers, with whom it entered into exclusive license
agreements calling for royalties aggregating 16.4%, 9.7%, 4.8% and 2.9% of net
revenues from sales of software products which contain the licensed technology
for the years 1997, 1998, 1999 and 2000, respectively. After December 31, 2000,
GraphOn has the option, under particular circumstances, to purchase the licensed
technology or exclusive rights to it. GraphOn and each software developer
tentatively have agreed to amend each of these agreements. Under the terms of
such proposed amendments, GraphOn will purchase the licensed technology for an
aggregate payment of $520,400 payable within 30 days of the effective time of
the merger, if the merger is consummated.

    Before October 1996, while GraphOn was developing its server-based software
products, GraphOn's revenue was derived principally from the sale and repair of
hardware computer terminals. GraphOn discontinued selling hardware products in
1996 and now provides only return-to-factory repair for the installed customer
base. Software licensing revenue in 1996 was $72,900, representing only 12.3% of
GraphOn's revenue. Software revenue consists of licensing fees for products sold
and revenues from OEM license agreements relating to GraphOn's software products
called GO-Global, GO-Joe and GO-Between, in addition to fees for training and
software maintenance. Consequently, GraphOn management does not consider
comparisons between 1997 and 1996 fiscal performance to be meaningful.

    In October 1996, Sun Microsystems licensed GO-Joe for distribution with its
network computers, GraphOn's server software for distribution with its UNIX
operating systems and GO-Global for use by its employees. GO-Global was released
for sale to customers other than Sun Microsystems in March 1997. In April 1998,
IBM licensed GO-Joe for distribution with its network computers and GraphOn's
server software for distribution with computers using its UNIX operating
systems. GO-Joe was released for sale to customers other than IBM in July 1998.
In December 1998, Corel licensed GraphOn software for distribution with its
WordPerfect Office Suite products.

    During 1997 and part of 1998, GraphOn concentrated its efforts on OEM
opportunities and strategic alliances to establish product acceptance. OEM
licensing revenue from the Sun Microsystems agreement accounted for
approximately 70.0% of revenue in 1997 and licensing revenue from the Sun
Microsystems, IBM and Corel agreements accounted for approximately 18.8%, 16.5%
and 20.6% of revenues, respectively, in 1998. GraphOn intends to continue to
commit significant financial and other resources toward its objective of
expanding its strategic OEM relationships and developing reseller channels. In
pursuit of this objective, in August 1998, GraphOn hired a Vice President of
Sales and two sales directors to create and develop GraphOn's reseller channel.

    In May 1998, GraphOn hired eight software engineers based in Bellevue,
Washington and in December 1998 added eight engineers in Concord, New Hampshire
in connection with the acquisition

                                       31
<PAGE>
of Corel's jBridge technology. In February 1999, GraphOn hired a Chief Financial
Officer. GraphOn has more than tripled its headcount from 12 at December 31,
1997 to 42 at March 31, 1999. It is expected that the number of employees will
increase following the completion of the merger.

    Product license revenues are recognized upon shipment only if no significant
GraphOn obligations remain and collection of the resulting receivable is deemed
probable. When product licenses require product engineering development by
GraphOn, recognition of revenue is after delivery and customer acceptance of
contract milestones. Revenues for training are recognized when the services are
performed. Revenue from customer yearly maintenance fees, for ongoing customer
support and product updates are recognized equally over the term of the
contract, which typically is 12 months.

    GraphOn's limited operating history as a software developer and manufacturer
makes the prediction of future operating results difficult and unreliable.
Future operating results may fluctuate due to many factors, including GraphOn's
ability to attract and retain strategic partners, the degree and rate of growth
of the markets in which GraphOn competes and accompanying demand for GraphOn's
products, the level of product and price competition, and the ability of GraphOn
to establish and build its software product reseller channels.

THREE MONTHS ENDED MARCH 31, 1999 VERSUS THREE MONTHS ENDED MARCH 31, 1998

    REVENUES.  Total revenues for the three months ended March 31, 1999 were
$639,500, an increase of 41.0% over the same period in 1998. The most important
contributing factor was a 100.0% increase in OEM licensing revenues to $400,000
in 1999 as compared to $200,000 in 1998. GraphOn's software revenues have been
derived primarily from two sources: GO-Global product sales and OEM licensing
revenues for GO-Joe, GO-Global and GraphOn's server software.

    COST OF GOODS SOLD.  Cost of goods sold was reduced to 14.0% of revenue for
the three months ended March 31, 1999, as compared to 17.6% in 1998. This
primarily is attributed to the continued reduction in the royalty rate paid to
outside software developers under GraphOn's exclusive licensing agreements.

    SALES AND MARKETING EXPENSES.  Sales and marketing expenses primarily
consist of salaries, sales commissions, travel expenses, trade show related
activities and promotional costs. Sales and marketing expenses increased 240.4%
to $755,600, or 118.2% of revenue for the three months ended March 31, 1999 from
$222,000, or 49.0% of revenue, in 1998. This increase primarily is attributable
to the addition of sales and marketing personnel and a substantial increase in
trade show, promotional and public relations activities.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses primarily
consist of salaries and legal and professional services. In addition, GraphOn's
corporate rent, utilities and administrative employee benefits are included in
general and administrative expenses. General and administrative expenses
increased 1,130.6% to $1,316,700, or 205.9% of revenue for the three months
ended March 31, 1999, from $107,000, or 23.6% of revenue, in 1998. This increase
is primarily due to amortization and depreciation expense recorded in connection
with the acquisition of technology and assets from Corel Corportation in the
approximate amount of $813,600, an increase in legal services, hiring additional
administrative personnel and increased utilities expenses necessary to support
expanding operations.

    RESEARCH AND DEVELOPMENT.  Research and development expenses consist
primarily of salaries and benefits to software engineers, supplies and payments
to contract programmers and rent on facilities. Research and development
expenses increased by 328.1% to $509,400, or 79.7% of revenue for the three
months ended March 31, 1999, from $119,000, or 26.2% of revenue, in 1998.

                                       32
<PAGE>
YEAR ENDED DECEMBER 31, 1998 VERSUS YEAR ENDED DECEMBER 31, 1997

    REVENUES.  Total revenues for the year ended December 31, 1998 were
$2,124,200, an increase of 10.3% over the same period in 1997. The most
important contributing factor was a 10.4% increase in software-related revenues
to $1,971,000 in 1998 as compared to $1,785,000 in 1997. GraphOn's software
revenues have been derived primarily from two sources: GO-Global product sales
and OEM licensing revenues for GO-Joe, GO-Global and GraphOn's server software.
Revenues from the Sun Microsystems OEM licensing agreement represented 70.0% of
total revenue in 1997 and from OEM license agreements with Sun Microsystems, IBM
and Corel, collectively, represented 67.0% of revenues in 1998.

    Revenues also include service fees from maintenance contracts and training
services. The maintenance program was started in June 1997 to provide product
updates and support from the time of purchase. It is expected that many of the
maintenance programs will be renewed by customers to assure continued product
updates and support. Service revenue was $116,000 in 1998, or 5.5% of revenue,
as compared to a nominal amount of revenue in 1997.

    COST OF GOODS SOLD.  Cost of goods sold consists primarily of royalties,
materials such as manuals, media and packaging, expenses associated with product
maintenance and enhancements such as software corrections and updates, and
amortization of capitalized researched and development expenses. Research and
development costs for new product development, after technological feasibility
is established, are treated as "capitalized software" on GraphOn's balance sheet
and subsequently expensed as cost of goods sold over the shorter of three years
or the remaining estimated life of the products, whichever produces the higher
expense for the period.

    Cost of goods sold was reduced to 16.2% of revenue in 1998, as compared to
24.1% in 1997. This primarily is attributed to the reduction in the royalty rate
paid to outside software developers under GraphOn's exclusive licensing
agreements.

    SALES AND MARKETING EXPENSES.  Sales and marketing expenses primarily
consist of salaries, sales commissions, travel expenses, trade show related
activities and promotional costs. Sales and marketing expenses increased 74.1%
to $1,440,300, or 67.8% of revenue, in 1998 from $827,300, or 43.0% of revenue,
in 1997. This increase primarily is attributable to the addition of sales and
marketing personnel and a substantial increase in trade show, promotional and
public relations activities. GraphOn expects that sales and marketing expenses
will continue to increase in dollar amounts, but decline as a percentage of
total revenues, as it continues to hire additional sales and marketing
personnel, establish reseller channels and expand promotional activities.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses primarily
consist of salaries and legal and professional services. In addition, GraphOn's
rent, utilities and administrative employee benefits are included in general and
administrative expenses. General and administrative expenses increased 244.5% to
$1,118,600, or 52.7% of revenue, in 1998, from $324,700, or 16.9% of revenue, in
1997. This increase primarily is attributed to legal services, hiring additional
administrative personnel and increased rent, utilities and benefit expenses
necessary to support expanding operations.

    INTEREST EXPENSE.  Interest expense increased in the amount of $519,800 in
1998 primarily due to the recording of interest expense in the amount of
$475,000 on the convertible note payable as a result of the issuance of 500,000
shares of common stock at $0.05 per share in connection with such note.

    RESEARCH AND DEVELOPMENT.  Research and development expenses consist
primarily of salaries and benefits to software engineers, supplies and payments
to contract programmers. Research and development expenses increased by 341.1%
to $840,200, or 39.6% of revenue, in 1998, from $190,500, or 9.9% of revenue, in
1997. GraphOn believes that a significant level of investment for research and
development is required to remain competitive and that such expenses are
expected to continue to increase over the foreseeable future.

                                       33
<PAGE>
    PROVISION FOR INCOME TAXES.  At December 31, 1998, GraphOn had approximately
$2.8 million in federal net operating loss carryforwards. The federal net
operating loss carryforwards will expire through 2018, if not utilized. In
addition, the Tax Reform Act of 1986 contains provisions that may limit the net
operating loss carryforwards available for use in any given period upon the
occurrence of various events, including a significant change in ownership
interests. In 1998, GraphOn experienced a "change of ownership" as defined by
the provisions of the Tax Reform Act of 1986. As such, GraphOn's utilization of
its net operating loss carryforwards will be limited to approximately $400,000
per year until such carryforwards are fully utilized. To date, GraphOn has
utilized a portion of its net operating loss carryforwards to reduce its overall
income tax liability.

YEAR ENDED DECEMBER 31, 1997 VERSUS YEAR ENDED DECEMBER 31, 1996

    Before October 1996, while GraphOn was developing its server-based software
products, GraphOn's revenue was derived principally from the sale and repair of
hardware computer terminals. GraphOn discontinued selling hardware products in
1996 and now provides only return-to-factory repair for the installed customer
base. Software licensing revenue in 1996 was $72,900, representing only 12.3% of
revenue as compared to 92.7% in 1997. Accordingly, the comparison of the year
ended December 31, 1997 to the year ended December 31, 1996 is considered not
meaningful by management.

    REVENUES.  Total revenues for the year ended December 31, 1997 were
$1,926,100, an increase of 223.8% over the same period in 1996. GraphOn believes
the most important contributing factor was a $1,712,000 increase in
software-related revenues to $1,785,000 in 1997 versus $72,900 in 1996 due to
GraphOn's change from selling hardware products in 1996 to software products in
1997.

    COST OF GOODS SOLD.  Cost of goods sold was reduced to 24.1% of revenue in
1997, versus 50.4% in 1996. This reduction primarily is attributable to
GraphOn's change in products from hardware to software as discussed above.

    SALES AND MARKETING EXPENSES.  Sales and marketing expenses increased 329.3%
to $827,300, or 43.0% of revenue, in 1997 from $192,700, or 32.4% of revenue, in
1996. This increase primarily is attributable to the addition of sales and
marketing personnel and a substantial increase in trade show, promotional and
public relations activities.

    GENERAL AND ADMINISTRATIVE.  General and administrative expenses increased
by 48.4% to $324,700, or 16.9% of revenue, in 1997 from $218,900, or 36.8% of
revenue, in 1996. This increase primarily is attributed to hiring additional
administrative personnel, legal services and benefit expenses necessary to
support expanding operations.

    RESEARCH AND DEVELOPMENT.  Research and development expenses increased by
356.8% to $190,500, or 9.9% of revenue, in 1997 from $41,700, or 7.0% of
revenue, in 1996 due to the change in GraphOn's products as discussed above.

LIQUIDITY AND CAPITAL RESOURCES

    Prior to 1998, GraphOn funded its operations, working capital needs and
capital expenditures primarily through cash flow from operations. In 1998,
GraphOn received $775,000 from the issuance of notes convertible into shares of
GraphOn common stock and, in October and December of 1998, received aggregate
net proceeds of $2,697,400 in connection with the first and second closings of a
private placement offering. On December 31, 1998, a $200,000 note converted into
200,000 shares of GraphOn common stock and a note in the amount of $100,000 was
repaid by GraphOn. As of December 31, 1998, GraphOn had cash and cash
equivalents of $1,798,400 as compared to total liabilities of $614,600,
exclusive of deferred revenue of $112,600 and, $475,000 convertible note
payable.

                                       34
<PAGE>
    In January 1999, the above convertible note was repaid from the net proceeds
of the final closing of GraphOn's private placement of securities whereby
GraphOn received additional net proceeds of $1,708,600 in consideration of
1,963,868 shares of our common stock. In February 1999, GraphOn sold 112,132
shares of its common stock for gross proceeds of $97,200. As of March 31, 1999,
GraphOn had cash and cash equivalents of $2,065,900 as compared to total
liabilities of $848,700, exclusive of deferred revenue of $85,200.

    Without considering the merger, GraphOn anticipates that cash balances as of
March 31, 1999, as well as anticipated revenue from operations, will be
sufficient to meet GraphOn's working capital and capital expenditure needs
through December 31, 1999. However, GraphOn would be forced to modify its growth
strategy or obtain additional capital to maintain such strategy if the merger
was not consumated. GraphOn may not be able to obtain such additional capital on
acceptable terms.

YEAR 2000 COMPLIANCE

    GraphOn is aware of problems associated with computer systems as the year
2000 approaches.
Many existing computer systems and applications and other control devices use
only two digits to identify a year in the date field, without considering the
impact of the upcoming change in the century. Others do not correctly process
"leap year" dates. As a result, such systems and applications could fail or
create erroneous results unless corrected so that they can correctly process
data related to the year 2000 and beyond. These problems are expected to
increase in frequency and severity as the year 2000 approaches, and are commonly
referred to as the "year 2000 problem."

    GraphOn is continuing to assess the impact that the year 2000 problem may
have on its operations and has identified the following three key areas of its
business that may be affected:

    - PRODUCTS. GraphOn has evaluated each of its most current products and
      older versions and believes that each is substantially year 2000
      compliant. However, GraphOn believes that it is not possible to determine
      whether all of its customers' products into which the GraphOn products are
      incorporated or connected will be year 2000 complaint because GraphOn has
      little or no control over the design, production and testing of its
      customers' products.

    - INTERNAL INFRASTRUCTURE. The year 2000 problem could affect the systems,
      transaction processing computer applications and devices used by GraphOn
      to operate and monitor all major aspects of its business, including
      financial systems, customer services, infrastructure, materials
      requirement planning, master production scheduling, networks and
      telecommunications systems. GraphOn believes that it has identified
      substantially all of the major systems, software applications and related
      equipment used in connection with its internal operations that must be
      modified or upgraded in order to minimize the possibility of a material
      disruption to its business. GraphOn has modified and upgraded all affected
      systems. Because most of the software applications used by GraphOn are
      recent versions of vendor supported, commercially available products,
      GraphOn has not incurred, and does not expect in the future to incur,
      significant costs to upgrade these applications as year 2000 complaint
      versions are released by the respective vendors.

    - FACILITY SYSTEMS. Systems such as heating, sprinklers, test equipment and
      security systems at GraphOn's facilities also may be affected by the year
      2000 problem. GraphOn currently is assessing the potential effect of and
      costs of remediating the year 2000 problem on its facility systems.
      GraphOn estimates that the total cost to the company of completing any
      required modifications, upgrades or replacements of these systems will not
      have a material adverse effect on GraphOn's business or results of
      operations.

    GraphOn presently estimates that the total cost of addressing its year 2000
issues will be less than approximately $10,000. This estimate was derived
utilizing numerous assumptions, including the
assumption that GraphOn already has identified its most significant year 2000
issues. However, there

                                       35
<PAGE>
can be no guarantee that these assumptions are accurate, and actual results
could differ materially from those anticipated.

    GraphOn currently is developing contingency plans to address the year 2000
issues that may pose a significant risk to its on-going operations. Such plans
could include accelerated replacement of affected equipment or software,
temporary use of back-up equipment or software or the implementation of manual
procedures to compensate for system deficiencies. However, there can be no
assurance that any contingency plans implemented by GraphOn would be adequate to
meet GraphOn's needs without materially impacting its operations, that any such
plan would be successful or that the company's results of operations would not
be materially and adversely affected by the delays and inefficiencies inherent
in conducting operations in an alternative manner.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK OF GRAPHON

    GraphOn is not exposed to financial market risks from changes in foreign
currency exchange rates or changes in interest rates and does not use derivative
financial instruments. A substantial majority of GraphOn's revenue and capital
spending is transacted in U.S. dollars. However, in the future, GraphOn may
enter into transactions in other currencies. An adverse change in exchange rates
would result in a decline in income before taxes, assuming that each exchange
rate would change in the same direction relative to the U.S. dollar. In addition
to the direct effects of changes in exchange rates, such changes typically
affect the volume of sales or foreign currency sales price as competitors'
products become more or less attractive.

ADOPTION OF NEW ACCOUNTING PRONOUNCEMENTS

    In February 1998, the Financial Accounting Standards Board issued Statement
of Financial Accounting Standard No. 132, "EMPLOYER'S DISCLOSURE ABOUT PENSIONS
AND OTHER POSTRETIREMENT BENEFITS," which standardizes the disclosure
requirements for pension and other post-retirement benefits. The adoption of
SFAS No. 132 did not impact GraphOn's disclosures.

RECENTLY ISSUED ACCOUNTING STANDARDS AND PRONOUNCEMENTS NOT YET ADOPTED

    In March 1998, the American Institute of Certified Public Accountants
("AICPA") issued Statement of Position 98-1, "Accounting for the Costs of
Computer Software Developed or Obtained for Internal Use." Under the provisions
of this standard, software development is divided into three phases: the
preliminary project state, which includes conceptual formulation and selection
of alternatives; the application development stage, which includes design of
chosen path, coding, installation of hardware and testing; and the
post-implementation/operation stage, which includes training and application
maintenance. Generally, only internal and external costs incurred during the
second phase, the application development stage, are capitalizable, with the
exception of data conversion and training costs, which are to be expensed when
incurred during this phase. This standard is not effective for GraphOn's 1998
financial statements. Management does not expect this standard to have a
significant impact on GraphOn's financial statements.

    In April 1998, the AICPA issued statement of Position 98-5, "Reporting on
the Costs of Start-up Activities." This standard requires the cost of start-up
activities, including organizational costs, be expensed as incurred and is not
effective for GraphOn's fiscal 1998 financial statements. Management does not
expect this standard to have a significant impact on GraphOn's financial
statements.

    In June 1998, FASB issued Statement of Financial Accounting Standard No.
133, "Accounting for Derivative Instruments and Hedging Activities." This
standard requires that every derivative instrument, including derivative
instruments embedded in other contracts, be recorded on the balance sheet as
either an asset or liability measured at its fair value. The standard is
effective for all fiscal years beginning after June 15, 2000. As GraphOn
currently is not a party to any derivative financial instruments and does not
anticipate becoming a party to any derivative instruments, management does not
expect this standard to have a significant impact on the GraphOn financial
statements.

                                       36
<PAGE>
                  SELECTED HISTORICAL FINANCIAL DATA OF UNITY


    The following selected historical financial data should be read in
conjunction with the historical financial statements of Unity and the notes
thereto appearing elsewhere in this joint proxy statement/ prospectus. The
selected financial data of Unity as of July 31, 1998 and 1997, for the years
ended July 31, 1998 and 1997 and for the period from inception (May 30, 1996) to
July 31, 1998 have been derived from the financial statements of Unity, which
have been audited by Arthur Andersen LLP, independent public accountants. The
data as of and for the nine months ended April 30, 1999 and 1998 have been
derived from Unity's unaudited condensed financial statements included elsewhere
in this joint proxy statement/prospectus and which, in the opinion of
management, include all adjustments, consisting of only normal recurring
adjustments, necessary for a fair presentation of the information set forth in
such financial statements. The results of operations for the nine months ended
April 30, 1999 are not necessarily indicative of the results that may be
expected for the full year.


UNITY

    STATEMENTS OF OPERATIONS DATA:


<TABLE>
<CAPTION>
                                                                                              PERIOD FROM MAY
                                                NINE MONTHS ENDED           YEAR ENDED            30, 1996
                                                    APRIL 30,                JULY 31,         (INCEPTION) (1)
                                              ----------------------  ----------------------         TO
                                                 1999        1998        1998      1997(1)     JULY 31, 1996
                                              ----------  ----------  ----------  ----------  ----------------
<S>                                           <C>         <C>         <C>         <C>         <C>
Revenues....................................  $       --  $       --  $       --  $       --    $         --
Net (loss) income...........................    (226,744)    (35,290)   (315,991)      6,637         (15,000)
(Loss) income per common share (basic and
  diluted)..................................        (.12)       (.02)       (.17)         --            (.02)
                                              ----------  ----------  ----------  ----------        --------
Weighted average common shares..............   1,875,000   1,875,000   1,875,000   1,515,000         625,000
</TABLE>


    BALANCE SHEET DATA:


<TABLE>
<CAPTION>
                                                                                         JULY 31,      JULY 31,
                                                                      APRIL 30, 1999       1998          1997
                                                                      ---------------  ------------  ------------
<S>                                                                   <C>              <C>           <C>
Total Assets........................................................   $   6,658,412    $6,489,903    $6,465,021
Total Liabilities...................................................         807,335       412,082        71,209
Stockholders' Equity(2).............................................       4,520,140     4,780,520     5,154,432
</TABLE>


- ------------------------

(1) Unity was inactive during the period May 30, 1996 (inception) through
    November 19, 1996.

(2) Does not include shares subject to possible conversion at conversion value.

                                       37
<PAGE>
          MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
                       AND RESULTS OF OPERATIONS OF UNITY

    Unity was incorporated in May 1996 for the purpose of raising money to fund
a vehicle to effect a merger or similar business combination with an operating
business. On November 12, 1996, Unity's registration statement under the
Securities Act covering 1,250,000 units, each unit consisting of one share of
Unity common stock, one Class A redeemable warrant and one Class B redeemable
warrant at an initial public offering price of $6.00 per unit, was declared
effective by the SEC. Unity derived $6,402,112 from the IPO, prior to
underwriting commissions of $600,000 and other expenses of $497,888.


    For the nine months ended April 30, 1999, for the years ended July 31, 1998
and 1997, and for the period from the date of inception (May 30, 1996) to July
31, 1996, Unity had net income (loss) of $(226,744), $(315,991), $6,637 and
$(15,000), respectively. These results of operations were attributable to
interest and dividend income offset by general and administrative expenses,
primarily consisting of management and professional fees of $169,000, $346,390,
$127,775 and $15,000, respectively, and taxes. Unity was inactive during the
period May 30, 1996 (date of inception) through November 19, 1996.



    On April 30, 1999, Unity had cash and cash equivalents and short-term
investments, inclusive of restricted cash and investments of $6,658,017,
totaling $6,658,412 and total liabilities of $807,335.


    See "The Merger" for information as to the merger agreement, the parties to
the merger agreement and the merger which it contemplates.

                                       38
<PAGE>
                               GRAPHON AND UNITY
                   PRO FORMA FINANCIAL STATEMENTS (UNAUDITED)

INTRODUCTION TO PRO FORMA FINANCIAL STATEMENTS (UNAUDITED)


    The accompanying unaudited pro forma balance sheet presents the financial
position of GraphOn and Unity as of March 31, 1999 and April 30, 1999,
respectively, assuming the merger had been completed as of the respective
balance sheet dates. The unaudited pro forma statements of operations for the
years ended December 31, 1998 and January 31, 1999 for GraphOn and Unity,
respectively, and for the three month periods ended March 31, 1999 and April 30,
1999 for GraphOn and Unity, respectively, reflect the merger, as if the merger
had occurred on the first day of the periods presented.



    Separate pro forma financial statements have been presented for the
following circumstances: (1) that no public Unity stockholders exercise their
right to have their shares converted upon the consummation of the merger, and
(2) that 19.99% of interest in Unity common stock held by public Unity
stockholders elect to have their shares converted upon the consummation of the
merger at the conversion value of $5.28 per share, based on the amount held in
the Unity trust account, inclusive of interest income to date thereon, at
January 31, and at April 30, 1999. The basis of presentation described in (2)
results from the possibility that up to a maximum of 19.99% of interest in Unity
common stock held by public Unity stockholders may vote no to the proposed
transaction and, if the transaction is consummated, would have their shares
redeemed at the conversion value of approximately $5.28 per share, or a total of
$1,320,325 as of January 31, and April 30, 1999. Should 20% or more vote against
the proposed transaction, the transaction would not be consummated.


    In the proposed merger, each outstanding share of GraphOn common stock will
be exchanged for Unity common stock, at an exchange ratio of approximately
0.5576 of a share of Unity common stock to one share of GraphOn common stock. As
of March 31, 1999, GraphOn had outstanding 16,363,959 shares of common stock. As
a result of the merger, the GraphOn shareholders will collectively acquire
approximately 9,086,961 shares of Unity common stock (16,296,559 GraphOn common
shares multiplied by the exchange ratio of approximately 0.5576 per share) or
approximately 82.9% of the then outstanding Unity common stock. The merger will
be accounted for as a capital transaction which is equivalent to the issuance of
stock by GraphOn for Unity's net monetary assets of approximately $6,000,000,
accompanied by a recapitalization of GraphOn.

    The pro forma financial information does not purport to be indicative of the
results which would have actually been obtained had such transactions been
completed as of the assumed dates and for the periods presented or which may be
obtained in the future.

                                       39
<PAGE>

                               GRAPHON AND UNITY
                            PRO FORMA BALANCE SHEET
           AS OF MARCH 31, 1999 (GRAPHON) AND APRIL 30, 1999 (UNITY)
                                  (UNAUDITED)



<TABLE>
<CAPTION>
                                                                                        ADDITIONAL
                                                    PRO FORMA                            PRO FORMA
                                                   ADJUSTMENTS        COMBINED          ADJUSTMENTS         COMBINED
                                                  (WITH NO STOCK      (WITH NO         (WITH 19.99%       (WITH 19.99%
                            GRAPHON      UNITY     CONVERSION)    STOCK CONVERSION)  STOCK CONVERSION)  STOCK CONVERSION)
                            ---------  ---------  --------------  -----------------  -----------------  -----------------
<S>                         <C>        <C>        <C>             <C>                <C>                <C>
CURRENT ASSETS:
  Cash and cash
    equivalents...........  $2,065,900 $     395   $  6,000,000(b)                      $(1,330,938)(g)
                                                       (575,000)(d)    $ 7,491,295          132,033(h)     $ 6,292,390
  Restricted cash and
    investments...........         --  6,658,017     (6,658,017)(b)             --                                  --
  Accounts receivable.....    601,400         --                         601,400                               601,400
  Other current assets....     44,000         --                          44,000                                44,000
                            ---------  ---------                  -----------------                     -----------------
    Total current
      assets..............  2,711,300  6,658,412                       8,136,695                             6,937,790
                            ---------  ---------                  -----------------                     -----------------
  PROPERTY AND EQUIPMENT,
    NET...................    438,800         --                         438,800                               438,800
  PURCHASED TECHNOLOGY....  2,864,100         --                       2,864,100                             2,864,100
  DEFERRED COMPENSATION
    EXPENSE...............    524,300         --                         524,300                               524,300
  OTHER ASSETS............     85,000         --                          85,000                                85,000
                            ---------  ---------                  -----------------                     -----------------
                            $6,623,500 $6,658,412                    $12,048,895                           $10,849,990
                            ---------  ---------                  -----------------                     -----------------
                            ---------  ---------                  -----------------                     -----------------
CURRENT LIABILITIES:
  Trade accounts
    payable...............  $ 416,300  $      --                     $   416,300                           $   416,300
  Accrued expenses........    432,400    692,395                       1,124,795                             1,124,795
  Deferred revenue........     85,200         --                          85,200                                85,200
  Advances from
    affiliates............         --    114,940                         114,940                               114,940
                            ---------  ---------                  -----------------                     -----------------
    Total current
      liabilities.........    933,900    807,335                       1,741,235                             1,741,235

COMMITMENTS AND
  CONTINGENCIES
Common stock, $.0001 par
  value, 249,875 shares
  subject to possible
  conversion, at
  conversion value........         --  1,330,937     (1,330,937)(c)             --                                  --

STOCKHOLDERS' EQUITY:
  Common stock............  10,236,800       163    (10,235,892)(a)
                                                             25(c)          1,096               (25)(g)          1,071
  Additional paid-in
    capital...............         --  5,071,075      9,684,794(a)
                                                       (658,017)(b)
                                                      1,330,912(c)                       (1,330,938)(g)
                                                       (575,000)(d)     14,853,764          132,033(h)      13,654,884
  Accumulated deficit.....  (4,547,200)  (551,098)       551,098(a)     (4,547,200)                         (4,547,200)
                            ---------  ---------                  -----------------                     -----------------
    Total stockholders'
      equity..............  5,689,600  4,520,140                      10,307,660                             9,108,755
                            ---------  ---------                  -----------------                     -----------------
                            $6,623,500 $6,658,412                    $12,048,895                           $10,849,990
                            ---------  ---------                  -----------------                     -----------------
                            ---------  ---------                  -----------------                     -----------------
</TABLE>


                                       40
<PAGE>

                               GRAPHON AND UNITY
                       PRO FORMA STATEMENT OF OPERATIONS
                FOR THE YEARS ENDED DECEMBER 31, 1998 (GRAPHON)
                          AND JANUARY 31, 1999 (UNITY)
                                  (UNAUDITED)


<TABLE>
<CAPTION>
                                                                                        ADDITIONAL
                                                    PRO FORMA                            PRO FORMA
                                                   ADJUSTMENTS        COMBINED          ADJUSTMENT          COMBINED
                                                  (WITH NO STOCK      (WITH NO         (WITH 19.99%       (WITH 19.99%
                          GRAPHON       UNITY      CONVERSION)    STOCK CONVERSION)  STOCK CONVERSION)  STOCK CONVERSION)
                        -----------  -----------  --------------  -----------------  -----------------  -----------------
<S>                     <C>          <C>          <C>             <C>                <C>                <C>
REVENUES..............  $ 2,124,200  $        --                    $   2,124,200                         $   2,124,200
COST OF GOODS SOLD....      344,200           --                          344,200                               344,200
                        -----------  -----------                  -----------------                     -----------------
Gross margin..........    1,780,000           --                        1,780,000                             1,780,000

COSTS AND EXPENSES:
Selling and
 marketing............    1,440,300           --                        1,440,300                             1,440,300
General and
 administrative.......    1,118,600      460,839                        1,579,439                             1,579,439
Research and
 development..........      840,200           --                          840,200                               840,200
                        -----------  -----------                  -----------------                     -----------------
Total costs and
 expenses.............    3,399,100      460,839                        3,859,939                             3,859,939
                        -----------  -----------                  -----------------                     -----------------
Operating loss........   (1,619,100)    (460,839)                      (2,079,939)                           (2,079,939)
                        -----------  -----------                  -----------------                     -----------------

OTHER INCOME/
 (EXPENSE):
Interest income and
 other................        9,800      192,522                          202,322            (39,533)(i)         162,689
Interest expense......     (521,900)          --                         (521,900)                             (521,900)
Other expense.........      (16,500)          --                          (16,500)                              (16,500)
                        -----------  -----------                  -----------------                     -----------------
Total other (expense)
 income...............     (528,600)     192,522                         (336,078)                             (375,711)
                        -----------  -----------                  -----------------                     -----------------
Loss before taxes.....   (2,147,700)    (268,317)                      (2,416,017)                           (2,455,650)
Income tax expense
 (benefit)............          800       (5,393)                          (4,593)                               (4,593)
                        -----------  -----------                  -----------------                     -----------------
Net loss..............  $(2,148,500) $  (262,924)                   $  (2,411,424)                        $  (2,451,057)
                        -----------  -----------                  -----------------                     -----------------
                                     -----------                  -----------------                     -----------------

NET LOSS PER SHARE
 (BASIC AND
 DILUTED).............               $     (0.14)                   $       (0.22)                        $       (0.23)
                                     -----------                  -----------------                     -----------------
                                     -----------                  -----------------                     -----------------

WEIGHTED AVERAGE
 NUMBER OF COMMON
 SHARES OUTSTANDING...                 1,875,000                       10,961,961(e)                         10,712,086(k)
                                     -----------                  -----------------                     -----------------
                                     -----------                  -----------------                     -----------------
</TABLE>

                                       41
<PAGE>

                               GRAPHON AND UNITY
                       PRO FORMA STATEMENT OF OPERATIONS
              FOR THE THREE MONTHS ENDED MARCH 31, 1999 (GRAPHON)
                           AND APRIL 30, 1999 (UNITY)
                                  (UNAUDITED)



<TABLE>
<CAPTION>
                                                                                     ADDITIONAL
                                                 PRO FORMA                            PRO FORMA
                                                ADJUSTMENTS        COMBINED          ADJUSTMENTS         COMBINED
                                               (WITH NO STOCK      (WITH NO         (WITH 19.99%       (WITH 19.99%
                         GRAPHON      UNITY     CONVERSION)    STOCK CONVERSION)  STOCK CONVERSION)  STOCK CONVERSION)
                        ----------  ---------  --------------  -----------------  -----------------  -----------------
<S>                     <C>         <C>        <C>             <C>                <C>                <C>
REVENUES..............  $  639,500  $      --                     $   639,500                           $   639,500
COST OF GOODS SOLD....      89,300         --                          89,300                                89,300
                        ----------  ---------                  -----------------                     -----------------
Gross margin..........     550,200         --                         550,200                               550,200
                        ----------  ---------                  -----------------                     -----------------

COSTS AND EXPENSES:

Selling and
  marketing...........     755,600         --                         755,600                               755,600
General and
  administrative......   1,316,700     48,941                       1,365,641                             1,365,641
Research and
  development.........     509,400         --                         509,400                               509,400
                        ----------  ---------                  -----------------                     -----------------
Total costs and
  expenses............   2,581,700     48,941                       2,630,641                             2,630,641
                        ----------  ---------                  -----------------                     -----------------
Operating loss........  (2,031,500)   (48,941)                     (2,080,441)                           (2,080,441)
                        ----------  ---------                  -----------------                     -----------------
OTHER INCOME
  (EXPENSE):
Interest and other
  income..............      14,900     61,232                          76,132            (9,982)(j)          66,150
Interest expense......      (6,600)        --                          (6,600)                               (6,600)
Other expense.........          --         --                              --                                    --
                        ----------  ---------                  -----------------                     -----------------
Total other income....       8,300     61,232                          69,532                                59,550
                        ----------  ---------                  -----------------                     -----------------
Income (loss) before
  taxes...............  (2,023,200)    12,291                      (2,010,909)                           (2,020,891)
Income tax expense....         800         --                             800                                   800
                        ----------  ---------                  -----------------                     -----------------
Net income (loss).....  $(2,024,000) $  12,291                    $(2,011,709)                          $(2,021,691)
                        ----------  ---------                  -----------------                     -----------------
                        ----------  ---------                  -----------------                     -----------------
NET EARNINGS (LOSS)
  PER SHARE
(BASIC AND DILUTED)...              $    0.01                     $     (0.18)                          $     (0.19)
                                    ---------                  -----------------                     -----------------
                                    ---------                  -----------------                     -----------------
WEIGHTED AVERAGE
  NUMBER OF COMMON
  SHARES
  OUTSTANDING.........              1,875,000                      10,961,961(f)                         10,712,086(l)
                                    ---------                  -----------------                     -----------------
                                    ---------                  -----------------                     -----------------
</TABLE>


                                       42
<PAGE>
              NOTES TO PRO FORMA FINANCIAL STATEMENTS (UNAUDITED)

1) BASIS OF PRESENTATION


    The pro forma balance sheet combines the balance sheets of GraphOn and Unity
as of March 31, 1999 and April 30, 1999, respectively, assuming that the merger
had been completed as of the respective balance sheet dates. The pro forma
statements of operations combine the statement of operations of GraphOn for the
year ended December 31, 1998 with the statement of operations of Unity for the
year ended January 31, 1999, and combine the statement of operations of GraphOn
for the three months ended March 31, 1999 with the statement of operations of
Unity for the three months ended April 30, 1999, assuming that the merger
occurred at the beginning of the periods presented.



    Separate pro forma financial statements have been presented for the
following circumstances: (1) that no Public Unity Shareholders exercise their
right to have their shares converted upon the consummation of the merger, and
(2) that 19.99% of interest in Unity Common Stock held by Public Unity
Shareholders elect to have their shares converted upon the consummation of the
merger at the conversion value of $5.28 per share, based on the amount held in
the Unity trust account, inclusive of interest income to date thereon, at
January 31, and at April 30, 1999.


    No pro forma adjustments have been provided for (1) any additional payments
that may be required to be paid to GraphOn creditors resulting from GraphOn's
1991 bankruptcy proceedings discussed previously in this joint proxy
statement/prospectus, or (2) 1,607,000 GraphOn shares issuable for no additional
consideration on June 30, 2000 if GraphOn at that date has not completed an
initial public offering or a merger or sale of all of its assets as the
transaction with Unity is deemed to be one of the qualifying events identified.


    The historical balance sheets used in the preparation of the pro forma
financial statements have been derived from GraphOn's and Unity's unaudited
financial statements as of March 31, 1999 and April 30, 1999, respectively. The
historical statements of operations for the year ended December 31, 1998
(GraphOn) and the year ended January 31, 1999 (Unity) have been derived from the
companies' audited and unaudited statements of operations, respectively. The
historical statements of operations for the three months ended March 31, 1999
(GraphOn) and the three months ended April 30, 1999 (Unity) have been derived
from the companies' unaudited statements of operations.


2) UNAUDITED PRO FORMA ADJUSTMENTS

    A description of the adjustments included in the unaudited pro forma
financial statements are as follows:

    (a) Reflects the recapitalization of GraphOn through the elimination of
       Unity's accumulated deficit and adjustment of equity accounts upon the
       exchange of GraphOn Common Stock into 9,086,961 shares of Unity Common
       Stock.

    (b) Reflects the release of Unity's restricted cash as a result of the
       merger and the contribution of $6,000,000 to the operations of the
       ongoing entity, as provided in the merger agreement. The balance of
       restricted funds released are charged to additional paid in capital as
       estimated costs of the transaction.

    (c) Reflects the reclassification of the conversion value of the Unity
       Common Stock to Stockholders' Equity assuming no stock conversion.

    (d) Reflects the payment of up to $575,000 to Spencer Trask in consideration
       of consulting services performed in connection with the merger.

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<PAGE>
2) UNAUDITED PRO FORMA ADJUSTMENTS (CONTINUED)
    (e) Reflects the weighted average shares outstanding for Unity of 1,875,000
       for the year ended January 31, 1999, plus 9,086,961 shares to be issued
       upon consummation of the merger.


    (f) Reflects the weighted average shares outstanding for Unity of 1,875,000
       for the three months ended April 30, 1999, plus 9,086,961 shares to be
       issued upon consummation of the merger.


    (g) Reflects the conversion of 19.99% of interest in Unity Common Stock held
       by Public Unity Stockholders, or 249,875 shares, at the conversion value
       of $5.28 per share. The number of shares assumed converted is based on
       the total Unity shares outstanding prior to the merger of 1,875,000, less
       625,000 Unity shares held by Non-Public Unity Stockholders, and
       represents the maximum number of shares that may be elected to be
       converted without precluding the consummation of the merger.

    (h) Reflects the reduction in the consulting fee payment to Spencer Trask
       resulting from the conversion of 249,875 Unity shares as described in
       (g).


    (i) Reflects a reduction of Unity's interest income assuming the proceeds of
       the merger were used to convert 249,875 Unity shares as described in (g).
       The estimate of reduction in interest income is based on the combined
       entity having $1,330,937 less in proceeds, assuming an average rate of
       return consistent with that earned by Unity of approximately 3.0% for the
       year ended January 31, 1999.



    (j) Reflects a reduction of Unity's interest income assuming the proceeds of
       the merger were used to convert 249,875 Unity shares as described in (g).
       The estimate of reduction in interest income is based on the combined
       entity having $1,330,937 less in proceeds, assuming an average rate of
       return consistent with that earned by Unity of approximately 3.0% for the
       three months ended April 30, 1999.


    (k) Reflects the weighted average shares outstanding for Unity of 1,875,000
       for the year ended January 31, 1999, less the 249,875 Unity shares
       assumed converted as described in (g), plus 9,086,961 shares to be issued
       upon consummation of the merger.


    (l) Reflects the weighted average shares outstanding for Unity of 1,875,000
       for the three months ended April 30, 1999, less the 249,875 Unity shares
       assumed converted as described in (g), plus 9,086,961 shares to be issued
       upon consummation of the merger.


                                       44
<PAGE>
                              BUSINESS OF GRAPHON

GRAPHON

    GraphOn develops, markets, sells and supports server-based software for the
enterprise computing environment. Server-based computing, sometimes referred to
as thin-client computing, is a computing model where traditional desktop
software applications are relocated to run entirely on a server or host
computer. GraphOn's technology uses a small software program at each desktop,
which allows the user to interface with an application as if it where running on
the user's desktop computer. This centralized deployment and management of
applications reduces the complexity and total costs associated with enterprise
computing. In addition, the ability to access such applications over the
Internet creates new operational models and sales channels. GraphOn provides the
technology to access applications over the Internet. GraphOn's server-based
technology works on today's most powerful personal computer or low-end network
computer, without application rewrites or changes to the corporate computing
infrastructure.

    GraphOn has established strategic alliances with technology leaders such as
IBM, Sun Microsystems and Corel, who have licensed GraphOn's technology. Using
GraphOn technology, Sun Microsystems and IBM provide their network computers
access to UNIX applications. Corel plans to use GraphOn's technology to provide
Internet access to its applications, such as WordPerfect, over the Internet.

INDUSTRY BACKGROUND

    HISTORY

    In the 1970's, software applications were executed on central mainframes and
typically accessed by low-cost display terminals. Information technology
departments were responsible for deploying, managing and supporting the
applications to create a reliable environment for users. In the 1980's, the PC
became the desktop of choice, empowering the user with flexibility, a graphical
user interface, and a multitude of productive and inexpensive applications. In
the 1990's, the desktop was provided access to mainframe applications and
databases, which run on large server computers. Throughout this computing
evolution, the modern desktop has become increasingly complex and costly to
administer and maintain. This is further exacerbated as organizations become
more dispersed with remote employees, and the desire increases to become more
closely connected with vendors and customers through the Internet.

    LOWERING TOTAL COST OF OWNERSHIP

    PC software in general has grown dramatically in size and complexity in
recent years. As a result, the cost of supporting and maintaining PC desktops
has increased substantially. A leading research firm estimates the annual cost
of operating a corporate PC was as much as $9,382 in 1997 and will increase to
as much as $13,485 by 2001. Industry analysts and enterprise users alike have
begun to recognize that the total cost of ownership of a PC, taking into account
the recurring cost of technical support, administration and end-user down time,
has become high both in absolute terms and relative to the initial hardware
purchase price.

    With increasing demands to better control corporate computing costs,
industry leaders are developing technology to address total cost of ownership
issues. One approach, led by Sun Microsystems and IBM, utilizes Java-based
network computers, which operate by downloading small Java programs to the
desktop, which in turn are used for accessing server-based applications. The
other approach is Microsoft's Windows NT-TM-, terminal server edition,
introduced in June 1998, which permits server-based Windows applications to be
accessed from the new Windows-based network computers. Both

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<PAGE>
initiatives are examples of server-based computing, which simplifies the desktop
by moving the responsibility of running applications to a central server, with
the promise of lowering total cost of ownership.

    CROSS-PLATFORM COMPUTING

    Today's enterprises contain a diverse collection of desktop computers, each
with its particular operating system, processing power and connection type.
Consequently, it is becoming increasingly difficult to provide universal desktop
access to business-critical applications across the enterprise. As a result,
organizations resort to desktop emulation software, new hardware or costly
application rewrites.

    A common cross-platform problem is the need to access UNIX or Linux
applications from a PC desktop. While UNIX-based computers dominate the
enterprise applications market, Microsoft Windows-based PCs are used on the
majority of enterprise desktops. Since the early 1990's, organizations have been
striving to connect desktop PCs to UNIX applications over all types of
connections, including networks and standard phone lines. This effort, however,
is complex and costly. The primary solution to date is known as PC X Server
software, large software programs that require substantial memory and processing
resources on the desktop. Typically, PC X Server software is difficult to
install, configure and maintain. Enterprises are looking for an effective UNIX
connectivity software for PCs and non-PC desktops that is easier and less
expensive to administer and maintain.

    APPLICATION SERVICE PROVIDERS

    With the ubiquitous nature of the Internet, new operational models and sales
channels are emerging. Traditional high-end software packages that were once too
expensive for many companies are now available for rent over the Internet. By
servicing customers through a centralized operation rather than installing and
maintaining applications at each customer site, GraphOn expects that application
service providers quickly will play an important role in addressing an
enterprise's computing requirements. Today, application service providers are
faced with the difficult task of creating or rewriting applications to entertain
the broader market. Though the application service provider industry is just
beginning to emerge, GraphOn expects it to develop rapidly, due to application
vendors' desire to expand their markets.

    REMOTE COMPUTING

    The cost and complexity of contemporary enterprise computing has been
further complicated by the growth in remote access requirements. As business
activities become physically distributed, computer users have looked to portable
computers with remote access capabilities to stay connected in a highly
dispersed work environment. One problem facing remote computing over the
Internet or direct telephone connections is the slow speed of communication in
contrast to the high speed of internal corporate networks. Today, applications
requiring remote access must be tailored to the limited speed and lower
reliability of remote connections, further complicating the already significant
challenge of connecting desktop users to business-critical applications.

THE GRAPHON APPROACH

    GraphOn's server-based software deploys, manages, supports and executes
applications entirely on the server computer and distributes them efficiently
and instantaneously to virtually any desktop device. GraphOn's technology
consists of three key components:

    - The server component runs alongside the server-based application and is
      responsible for intercepting user-specific information for display at the
      desktop.

    - The desktop component is responsible only for sending keystrokes and mouse
      motion to the server, as well as presenting the application interface to
      the desktop user. This keeps the

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<PAGE>
      desktop simple, or thin, as well as independent of application
      requirements for resources, processing power and operating systems.

    - GraphOn's protocol enables efficient communication over fast networks or
      slow dial-up connections and allows applications to be accessed from
      virtually any location with network-like performance and responsiveness.

    The major benefits of the GraphOn approach are as follows:

    - LOWERS TOTAL COST OF OWNERSHIP. Shrinking recurring costs is a primary
      goal of GraphOn's products. Today, installing enterprise applications
      typically is time-consuming, complex and expensive, requiring
      administrators to manually install and support diverse desktop
      configurations and interactions. GraphOn's server-based software
      simplifies application management by enabling deployment, administration
      and support from a central location. Installation and updates are made
      only at the server, avoiding desktop software and operating system
      conflicts and minimizing at-the-desk support. According to a leading
      research firm, server-based computing strategies, such as those offered by
      GraphOn, may achieve as much as a 30% savings by, among other things,
      simplifying the desktop and moving application processing and management
      from individual desktops to a centralized server-based infrastructure. For
      example, in a 2,500-PC computing environment, a leading research firm has
      calculated that a server-based approach would have saved approximately
      $4.5 million in 1997 and, as computing complexity continues to grow, could
      save approximately $16 million in 2001.

    - CONNECTS DIVERSE COMPUTING PLATFORMS. Today's computing infrastructures
      are a mix of desktop devices, network connections and operating systems.
      Enterprise-wide communication often requires costly and complex emulation
      software or application rewrites. For example, Windows PCs typically may
      not access a company's UNIX applications without installing complex PC X
      Server software on each PC. Typical PC X Servers are large and require an
      information technology professional to properly install and configure each
      desktop. For Macintosh, the choices are even fewer, requiring the addition
      of yet another vendor product. For the newer desktop technologies, such as
      Sun Microsystems' and IBM's network computers, access to UNIX is
      impractical without server-based products. To rewrite an application for
      each different desktop and their many diverse operating systems is often a
      difficult and time-consuming task. In addition to the development expense,
      issues of desktop performance, data compatibility and support costs often
      make this option prohibitive. GraphOn's products provide organizations the
      ability to access applications from virtually all desktops, utilizing
      their existing computing infrastructure, without rewriting a single line
      of code or changing or reconfiguring desktop hardware. This means that
      enterprises can maximize their investment in existing technology and allow
      users to work in their preferred desktop environment.

    - APPLICATION SERVICE PROVIDERS. Many large enterprises have made
      significant investments in developing, marketing and selling
      enterprise-wide software solutions. GraphOn's server-based technology is
      designed to allow Windows, Linux and UNIX access from any desktop
      connected to the Internet. Today's packaged applications can be accessed
      quickly, easily and without modification.

    - LEVERAGES EXISTING PCS AND DEPLOYS NEW DESKTOP HARDWARE. GraphOn's
      software brings the benefits of server-based computing to users of
      existing PC hardware, while simultaneously enabling enterprises to begin
      to take advantage of and deploy less complex network computers. This
      assists organizations in maximizing their current investment in hardware
      and software while, at the same time, facilitating a manageable and cost
      effective transition to newer desktop devices.

    - EFFICIENT PROTOCOL. Applications typically are designed for
      network-connected desktops, which can put tremendous strain on congested
      networks and may yield poor, sometimes unacceptable, performance over
      remote connections. For application service providers, bandwidth typically
      is

                                       47
<PAGE>
      the top recurring expense when web-enabling or renting access to
      applications over the Internet. GraphOn's highly efficient protocol sends
      only keystrokes, mouse clicks and display updates over the network
      resulting in minimal impact on bandwidth for application deployment, thus
      lowering cost on a per user basis. Within the enterprise, GraphOn's
      protocol can extend the reach of business-critical applications to all
      areas, including branch offices, telecommuters and remote users, over the
      Internet, phone lines or wireless connections. This concept may be
      extended further to include vendors and customers for increased
      manufacturing flexibility, time-to-market and customer satisfaction.

PRODUCTS

    GraphOn's products are designed to allow enterprises to access Windows, UNIX
and Linux applications from centrally managed servers without modification.
Currently, GraphOn's products provide the UNIX and Linux server-based software.
With the integration of the jBridge technology in late 1999, the current product
line will be extended to access Windows applications from centrally managed
servers, widening GraphOn's product offering and opportunities.

    - GO-Global is a server-based software product for high performance access
      to UNIX and Linux applications from any Windows PC located virtually
      anywhere on an organization's network, the Internet or even over a phone
      line. GraphOn began selling GO-Global in March 1997.

    - GO-Joe is a server-based software product for accessing Unix and Linux
      applications, from virtually any Java-enabled desktop or device, including
      the Sun Microsystems and IBM network computers, desktops and hand-held
      devices with web browsers such as Microsoft Internet Explorer-TM- or
      Netscape Navigator-TM-. GraphOn began selling GO-Joe in July 1998. Sun
      Microsystems began shipping GO-Joe for distribution with its network
      computers in July 1998, and IBM is expected to start shipping GO-Joe with
      its network computers in the second quarter of 1999.

    - GO-Between is a server-based software product for accessing UNIX and Linux
      applications from Microsoft's Windows NT, terminal server edition.
      GO-Between minimizes the impact on server resources over traditional
      emulator solutions for accessing UNIX and Linux applications from
      Microsoft's terminal server edition products. This increases the number of
      simultaneous users that may access UNIX from any one terminal server
      edition server. Microsoft has released a technical whitepaper describing
      the UNIX access benefits of GO-Between for terminal server edition users.
      GraphOn began shipping GO-Between in October 1998.

    - jBridge is a technology GraphOn acquired from Corel in December 1998. It
      will enable GO-Global, GO-Between and GO-Joe to access server-based
      Windows applications. With the anticipated integration of the jBridge
      technology in late 1999, GraphOn will offer complete cross platform access
      to Windows applications from virtually any desktop. Since the applications
      are not running on the desktop, even a non-Windows desktop will be able to
      access Windows applications. Windows applications can be accessed from
      desktop computers using various operating systems such as Macintosh, UNIX,
      Linux and OS/2, which will appear and function as if they were running
      locally on the desktop.

TARGET MARKETS

    The market for GraphOn's products comprises all organizations that need to
access Windows, UNIX and/or Linux applications from a wide variety of desktops
from any location, including over the Internet and dial-up lines. This includes
large organizations, such as Fortune 1000 companies, government and educational
institutions. GraphOn software is designed to allow these enterprises to use the
best desktop for a particular purpose, rather than following a "one PC fits
all," high total cost of

                                       48
<PAGE>
ownership model. GraphOn's opportunity within the marketplace is more
specifically broken down as follows:

    ENTERPRISES EMPLOYING A MIX OF UNIX AND WINDOWS.  Most major enterprises
employ a mix of UNIX computers and Windows PCs. Companies that utilize a mixed
computing environment require cross-platform connectivity solutions like
GO-Global that will allow users to access UNIX applications from desktop PCs. It
has been estimated that PCs represent over 90% of enterprise desktops. GraphOn
believes that its products are well positioned to exploit this opportunity and
that its server-based software products will significantly reduce the cost and
complexity of connecting PCs to UNIX applications.

    ENTERPRISES THAT EMPLOY MICROSOFT'S TERMINAL SERVER EDITION. A leading
research firm estimates that the Microsoft terminal server market will start to
accelerate rapidly, with more than 390,000 host servers installed by the end of
2000. Each terminal server edition server supports a minimum of 10 users, such
that the estimated user base for terminal server editions will be at least 3.9
million in 2000. A leading research firm reports that 38% of surveyed terminal
server edition users will require access to UNIX applications. GraphOn
management believes the terminal server edition market to be a significant
opportunity for GO-Between.

    ENTERPRISES WITH REMOTE COMPUTER USERS.  Remote computer users comprise one
of the fastest growing market segments in the computing industry. Efficient
remote access to applications has become an important part of many enterprise
computing strategies. A leading research firm projects that approximately 25
million business users access computing resources remotely in 1998 and that this
number will grow to approximately 137 million worldwide in 2003, with 60% of
these users still connecting via low-bandwidth modems. GraphOn's protocol is
designed to enable highly efficient low-bandwidth connections.

    APPLICATION SERVICE PROVIDERS.  High-end software applications in the fields
of human resources, enterprise resource planning, enterprise relationship
management and others historically only have been available to organizations
able to make large investments in capital and personnel. The Internet has opened
up global and mid-tier markets to vendors of this software who may now offer it
to a broader market on a rental basis. GraphOn's products enable the vendors to
provide Internet access to their applications with minimal additional investment
in development implementation.

    EXTENDED ENTERPRISE SOFTWARE MARKET.  Extended enterprises allow access to
their computing resources to their customers, suppliers, distributors and other
partners, gaining flexibility in manufacturing and increasing speed-to-market
and customer satisfaction. For example, extended enterprises may maintain
decreased inventory via just-in-time, vendor-managed inventory and related
techniques. The Internet has facilitated this development and a leading research
firm has predicted the extended enterprise software market will grow to an
estimated $5.76 billion in 2002. The early adoption of extended enterprise
solutions may be driven in part by enterprises' need to exchange information
over a wide variety of computing platforms. GraphOn believes that its
server-based software products, along with its low-impact protocol, are well
positioned to provide enabling solutions for extended enterprise computing.

STRATEGIC RELATIONSHIPS

    GraphOn believes it is important to maintain its current strategic alliances
and intends to seek suitable new alliances in order to improve its technology
and/or enhance its ability to penetrate relevant target markets. The alliances
that GraphOn currently is focusing on are those that have immediate revenue
generating potential, strengthen GraphOn's position in the server-based software
market, add complementary capabilities and/or raise awareness of GraphOn's
products.

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<PAGE>
    SUN MICROSYSTEMS.  In October 1996, Sun MicroSystems licensed GraphOn's
GO-Joe for distribution within its network computers and GraphOn's server
component for distribution with its UNIX computers and operating system.
Pursuant to the Sun Microsystems agreement, Sun has a perpetual, non-exclusive,
world-wide and fully paid up license to, among other things, distribute and sell
GO-Joe with its network computers and to distribute GraphOn's server component
with its UNIX computers and operating systems. The license to Sun also allows
Sun employees to use GO-Global internally and remotely. In addition to what is
provided for in the Sun agreement, Sun's network computers currently display the
GO-Joe logo, GraphOn's name and GraphOn's website address each time GO-Joe is
started, further increasing company and product awareness. GraphOn plans to work
with Sun's sales force and resellers to sell and promote GO-Global and
GO-Between as UNIX access solutions for users of PCs and multi-user NT. As of
March 26, 1999, Sun paid GraphOn a $2,125,000 one-time royalty payment for
completion of product delivery requirements and for a site license for
GO-Global. Payments totaling $375,000 currently remain, which are required to be
paid to GraphOn upon the completion of milestones set forth in the agreement.
The Sun agreement is expected to terminate in December 2000, although Sun will
continue to have rights to GraphOn products licensed pursuant to the agreement
after its termination.

    IBM.  In April 1998, IBM licensed GO-Joe for $1,500,000 for distribution
with some of its network computers and GraphOn's server component for
distribution with its UNIX computers and operating systems. Pursuant to the IBM
agreement, IBM and its affiliates have a non-exclusive, world-wide, irrevocable,
royalty-free and fully paid up license to, among other things, distribute and
sell, and allow sub-licensees to distribute and sell, GO-Joe and GraphOn's
server component with IBM products and those of its sub-licensees. GraphOn
expects to work with IBM's resellers to persuade IBM's customers to purchase
GO-Global and GO-Between to access UNIX applications from their PCs and
multi-user NT hosts. IBM currently is promoting GO-Joe, and GraphOn intends to
leverage both the IBM relationship and IBM resellers to generate revenues and
increase product awareness. The IBM agreement terminates in November 1999. The
IBM agreement is renewable at IBM's option with 90 days prior written notice,
with pricing terms to be negotiated in good faith. IBM may terminate for
convenience at any time on or after August 1, 1999. IBM will continue to have
rights to GraphOn products licensed pursuant to the IBM agreement after its
termination.

    COREL CORPORATION.  In December 1998, GraphOn acquired Corel's jBridge
technology and its jBridge development team, in exchange for securities of
GraphOn. See "Description of GraphOn's Securities-Corel Warrant and Similar
Warrant." jBridge is designed to allow any device running Java to access 32-bit
Windows applications remotely and unmodified. When combined with GraphOn's UNIX
products, GraphOn believes that jBridge will provide GraphOn customers with a
complete enterprise solution, linking any of such platforms to virtually any
desktop over virtually any connection.

    In addition, GraphOn entered into a strategic alliance with Corel. GraphOn
intends through this alliance to promote its products to Corel's Windows, UNIX
and Linux customers. The alliance has a one year term ending in July 1999 which
is renewable by mutual consent for successive one year periods, and is
terminable at will by either party.

                                       50
<PAGE>
SALES, MARKETING AND SUPPORT

    GraphOn's customers, to date, are primarily Fortune 1000 companies and large
government organizations. Among GraphOn's current customers are the following:

<TABLE>
<S>                                            <C>
Ameritech Corporation                          Amoco Corporation
AT&T Corporation                               Lucent Technologies, Inc.
Canadian Meteorological Centre                 Motorola, Inc.
Cisco Systems, Inc.                            Nortel Technology
Corel Corporation                              National Semiconductor Corp.
Ericsson Telecommunicatie B.V.                 Pfizer Inc.
Hewlett-Packard Company                        Shell Oil Company
IBM                                            Sun Microsystems, Inc.
Johnson & Johnson                              United States Geological Survey
</TABLE>

    While previously most of GraphOn's revenues were from direct sales and OEM
agreements, GraphOn currently is developing and expanding relationships with a
select number of resellers. GraphOn expects to benefit from these relationships
by availing itself of their established customer-base, co-marketing programs,
and marketing and sales capabilities. Such resellers include value-added
resellers, system integrators and OEM licensees. GraphOn's sales and marketing
efforts will be focused on increasing product awareness and demand among large
enterprises and developing formal distribution relationships with UNIX and
Windows-oriented resellers. Current marketing activities include a targeted
direct mail campaign, tradeshows, production of promotional materials, public
relations and maintaining an Internet presence for marketing and sales purposes.
In August 1998, GraphOn hired three senior level sales professionals to develop
GraphOn's reseller channels.

    Due to the nature of GraphOn's products, remote access via telephone lines
or the Internet can be used to troubleshoot and diagnose problems. GraphOn
provides technical support and training to OEMs and resellers that function as
the first line of support for their own customers. GraphOn provides 90-day
online Internet, e-mail, fax and telephone-based services for technical support
and software upgrades at no charge. Additionally, purchasers of GraphOn's
products can choose to purchase an annual extended maintenance program, which
currently costs 15% of the product purchase price per year.

RESEARCH AND DEVELOPMENT

    GraphOn's research and development efforts currently are focused on
developing new products and further enhancing the functionality, performance and
reliability of existing products. GraphOn invested $840,200 in research and
development in 1998 and expects increased expenditures in 1999. GraphOn has made
significant investments in its protocol and in the performance and development
of its server-based software.

    In May 1998, GraphOn hired a group of eight software engineers located in
Bellevue, Washington. They have experience in Java, protocol technology and
various Microsoft Windows operating systems. They are working to enhance
GraphOn's existing software products as well as beginning to conceptualize and
architect future products. In December 1998, GraphOn hired nine additional
software engineers located in Concord, New Hampshire in connection with the
acquisition of the jBridge technology from Corel. This group has substantial
Windows and Java experience. GraphOn plans to continue to add software engineers
in order to expand its research and development capabilities, although there can
be no assurances that qualified personnel will be available to GraphOn as
needed.

                                       51
<PAGE>
OPERATIONS

    GraphOn controls all purchasing, inventory, order processing and shipping of
GraphOn products and accounting functions related to its operations. Production
of software masters, development of documentation, packaging designs, quality
control and testing also are performed by GraphOn. CD-ROM and floppy disk
duplication, printing of documentation and packaging are accomplished through
outside vendors. GraphOn generally ships products upon receipt of order. As a
result, GraphOn has relatively little backlog at any given time, and does not
consider backlog a significant indicator of future performance.

COMPETITION

    The server-based software market in which GraphOn participates is
highly-competitive, although GraphOn believes it has significant advantages over
its competitors, both in product performance and market positioning. This market
ranges from remote access for a single PC user to server-based software for
large numbers of users over many different types of desktop hardware and
connections. GraphOn's competitors include manufacturers of conventional PC X
Server software and competition is expected from these and other companies in
the server-based software market. Competitive factors in the market in which
GraphOn competes include price, product quality, functionality, product
differentiation and breadth.

    GraphOn believes its principal competitors for its current products include
Hummingbird Communications, Ltd., SCO, WRQ, Network Computing Devices and
NetManage. Hummingbird is the established market leader in PC X Servers,
believed to have over 50% of that market. WRQ, Network Computing Devices and
NetManage also offer traditional PC X Server software and have minority
positions within that market.

    SCO introduced Tarantella, a server-based Java-to-Unix connectivity product
which competes with GO-Joe. However, SCO's principal product is a UNIX operating
system that competes with UNIX vendors like Sun Microsystems and IBM. GraphOn
believes that SCO, as a competitor to the other UNIX vendors, will have
difficulty in penetrating enterprises who utilize other vendors' UNIX operating
systems, such as Sun Microsystems and IBM.

PROPRIETARY TECHNOLOGY

    GraphOn licenses key components of its server-based technology from three
software developers to whom it pays royalties pursuant to three different
exclusive license agreements. Minor elements of GraphOn's server-based
technology also are licensed from two of the software developers pursuant to
non-exclusive agreements, one of which calls for royalty payments by GraphOn.
Such royalty payments are based on a percentage of net revenues received by
GraphOn for sales of GraphOn products that contain the licensed technology. The
royalty rate under all of these agreements is an aggregate of 4.8% and 2.9% for
1999 and 2000, respectively. GraphOn holds options to purchase the developed
technology and to purchase a perpetual license to some of the nonexclusively
licensed technology which are exercisable beginning in December 2000. If GraphOn
does not exercise its options under the exclusive license agreements, the
applicable royalty rate would continue at 2% in 2001 and beyond. The exclusive
license agreements and one of the nonexclusive agreements, unless terminated
earlier pursuant to their terms, will terminate on September 6, 2006. The other
nonexclusive agreement continues unless terminated for material breach. GraphOn
and each software developer tentatively have agreed to amend each of these
agreements. Under the terms of such proposed amendments, GraphOn will purchase
all of the licensed technology for aggregate payments of $172,381 and $348,000
payable in 1999 and 2000, respectively.

    GraphOn relies primarily on trade secret protection, copyright law,
confidentiality and proprietary information agreements to protect its
proprietary technology and registered trademarks. The loss of any

                                       52
<PAGE>
material trade secret, trademark, trade name or copyright could have a material
adverse effect on GraphOn's results of operations and financial condition. There
can be no assurance that GraphOn's efforts to protect its proprietary technology
rights will be successful. Despite GraphOn's precautions it may be possible for
unauthorized third parties to copy portions of GraphOn's products, or to obtain
information GraphOn regards as proprietary. See "Legal Proceedings." GraphOn
does not believe its products infringe on the rights of any third parties, but
there can be no assurance that third parties will not assert infringement claims
against GraphOn in the future, or that any such assertion will not result in
costly litigation or require GraphOn to obtain a license to proprietary
technology rights of such parties.

EMPLOYEES AND FACILITIES

    As of February 28, 1999, GraphOn had a total of 43 employees, including 13
in marketing, sales and support, 25 in research and development and 5 in
administration and finance. No employees are covered by a collective bargaining
agreement.

    GraphOn currently occupies approximately 7,200 square feet of office space
in Campbell, California pursuant to a lease which expires in April 1999, but is
renewable each year at GraphOn's option until April 2006, 2,300 square feet in
Bellevue, Washington pursuant to a lease that will expire in May 2001 and 13,000
square feet in Concord, New Hampshire pursuant to a lease that will expire in
October 2003 and is cancellable as of October 31, 2001. Annual lease payments
currently are approximately $261,600. GraphOn currently is seeking a sublet
tenant for a portion of the Concord facility. GraphOn believes the current
facilities will be adequate to accommodate its needs until the end of August,
1999 and is investigating the opportunity to expand its facilities to
accommodate anticipated future needs in Bellevue.

LEGAL PROCEEDINGS

    In late 1996, GraphOn disclosed aspects of its proprietary technology on a
confidential basis to Insignia Solutions, Inc. and Insignia Solutions plc, some
of whose assets were later acquired by Citrix Systems. GraphOn made inquiry of
Citrix and Insignia regarding its potential misuse of GraphOn's technology.
Citrix instituted litigation in the United States District Court for the
Southern District of Florida seeking a judicial declaration that neither Citrix
nor Insignia had misappropriated or infringed upon GraphOn's technology or
breached a binding agreement. On January 15, 1999, GraphOn responded by filing a
motion to dismiss the action. On May 14, 1999, the court granted GraphOn's
motion to dismiss the action. This ended the litigation.

                                       53
<PAGE>
                             MANAGEMENT OF GRAPHON

GENERAL

    The following table sets forth information regarding GraphOn's executive
officers, directors and other key employees:

<TABLE>
<CAPTION>
NAME                                                       AGE                            POSITION
- -----------------------------------------------------      ---      -----------------------------------------------------
<S>                                                    <C>          <C>
EXECUTIVE OFFICERS AND DIRECTORS
Walter Keller........................................          48   President and Chairman of the Board of Directors
Robin Ford...........................................          49   Executive Vice President, Marketing and Sales
Vince Pfeifer........................................          33   Vice President, Product Development
Edmund Becmer........................................          40   Chief Financial Officer
Thomas A. Bevilacqua.................................          43   Director and Secretary
Robert Dilworth......................................          57   Director
Eric Kim.............................................          43   Director
August P. Klein......................................          62   Director
Michael P. O'Reilly..................................          46   Director

KEY EMPLOYEES
Prakash Jadeja.......................................          44   Director of Engineering
Michael Hoegeman.....................................          38   Principal Architect
Robert Currey........................................          32   Principal Architect
William Tidd.........................................          36   Director of Software Development
</TABLE>

    WALTER KELLER has served as President and Chairman of the GraphOn board
since GraphOn's founding in 1982 and was Chief Financial Officer from 1991 until
February 8, 1999. Prior to founding GraphOn, Mr. Keller's experience included
executive staff and senior level management, sales and engineering positions at
United Technologies Corporation and Honeywell Inc. Mr. Keller is a member of the
Society of Professional Engineers and holds a B.S. in Mechanical Engineering and
a M.S. in Electrical Engineering from Santa Clara University in Santa Clara, CA.
Mr. Keller is the husband of Ms. Ford.

    ROBIN FORD has served as Executive Vice President, Marketing and Sales of
GraphOn since 1996, was Vice President, Marketing and Sales from 1991 to 1996
and held various positions in sales and marketing at GraphOn from 1983 to 1991.
Ms. Ford was a director of GraphOn from October 1991 to June 1998. Prior to
joining GraphOn, Ms. Ford held various sales management and technical positions
at Intel Corporation, National Semiconductor Corporation and Grid Systems
Corporation. Ms. Ford's responsibilities with GraphOn have included building and
maintaining GraphOn's sales and marketing operations and obtaining major
government and OEM contracts. Ms. Ford is the wife of Mr. Keller.

    VINCE PFEIFER has served as Vice President, Product Development of GraphOn
since October 1998, and was General Manager and Director of Product Development
from June 1998 to August 1998. From June 1995 to May 1998, Mr. Pfeifer served as
the Vice-President of Product Development for Exodus Technologies and
ConnectSoft Communication Corporation and has nine years of experience in
designing, developing, testing and supporting commercial grade software.

    EDMUND BECMER has served as Chief Financial Officer and Vice President of
Finance & Administration of GraphOn since February 1999. From May 1998 until
December 1998, Mr. Becmer was Chief Financial Officer of TMCI Electronics, Inc.,
a publicly-traded company, based in San Jose, CA, with subsidiaries involved in
the manufacturing of semiconductor equipment. In February, 1999, TMCI
Electronics filed for reorganization under Chapter 11 of the United States
Bankruptcy Code. Prior to joining TMCI Electronics, from March 1996 to May 1998,
Mr. Becmer was a member of the accounting

                                       54
<PAGE>
firm of Moore Stephens, P.C., where he was responsible for SEC audits, mergers
and acquisitions and business consulting. From August 1993 to June 1995, Mr.
Becmer was controller of First City Industries, Inc. in New York, NY, a holding
company with subsidiaries in manufacturing, commercial real estate and
residential real estate. From June 1987 to June 1993, Mr. Becmer was
CFO/Controller of Lincorp Holdings, Inc., a public investment holding company in
New York, NY, with investments in banking and commercial real estate and a
Fortune Service 500 company. Mr. Becmer also was with the accounting firms of
BDO Seidman, LLP and Deloitte and Touche LLP. Mr. Becmer holds a B.S.B.A. from
San Diego State University and is a Certified Public Accountant.

    THOMAS A. BEVILACQUA has been a director of GraphOn since July 1998. Mr.
Bevilacqua has been Executive Vice-President of Corporate Development and
General Counsel of E*Trade Group, Inc. since April 1999. From 1991 to March
1999, Mr. Bevilacqua was a partner of Brobeck, Phleger & Harrison LLP, counsel
to GraphOn, and served on that firm's Executive Committee. Mr. Bevilacqua is a
director of E*Trade Online Ventures and Schuler Homes, Inc. Mr. Bevilacqua has
B.S. and J.D. degrees from the University of California.

    ROBERT DILWORTH has served as a director of GraphOn since July 1998. Mr.
Dilworth has served as Chairman of the Board of Metricom, Inc. since 1996, and
as a Director since 1987. He served as Metricom's CEO from 1987 to 1998.
Metricom is a leading provider of wireless data communication and network
solutions. Prior to joining Metricom, from 1985 to 1987, Mr. Dilworth served as
President of Zenith Data Systems Corporation, a microcomputer manufacturer.
Earlier positions include CEO at Morrow Designs, CEO at Ultramagnetics, Division
Manager at Varian Associates, Director of Minicomputer Systems at Sperry Univac
and Vice President of Finance and Administration at Varian Data Machines. Mr.
Dilworth is also a director of VLSI Technology, Inc., Data Technology
Corporation, Cortelco Systems, Inc. and Photonics Corp. Mr. Dilworth holds a
B.S. in Business and Mathematics from L.A. State University.

    ERIC KIM has been a director of GraphOn since July 1998. He is CEO and
President of the Spencer Trask Software Group, an affiliate of Spencer Trask.
From 1994 to 1997, he served as President and CEO of Pilot Software, Inc., a
business unit of Dun & Bradstreet Corporation. He also was Corporate Vice
President of Strategy at Dun & Bradstreet Corporation from 1993 to 1994. From
1990 to 1992, Mr. Kim was General Manager at Lotus Development Corporation. From
1985 to 1990, he served as Vice President of Marketing for Ashton-Tate
Corporation. Mr. Kim holds a B.S. in Physics from Harvey Mudd College, an M.S.
in Engineering Systems from the University of California at Los Angeles and an
M.B.A. from Harvard Graduate School of Business. Mr. Kim is a nominee of Spencer
Trask.

    AUGUST P. KLEIN has served as a director of GraphOn since August 1998. Mr.
Klein has been, since 1995, the Founder, CEO and Chairman of the Board of JSK
Corporation and, since 1997, of APJK Corporation, general contractors and
service providers for the insurance industry. From 1989 to 1993, Mr. Klein was
founder and CEO of Uniquest, Inc., an object oriented application software
company. From 1984 to 1988, Mr. Klein served as CEO of Masscomp, Inc., a
developer of high performance real time mission critical systems and UNIX-based
applications. Mr. Klein has served as Group Vice President, Serial Printers at
Data Products Corporation and President and CEO at Integral Data Systems, a
manufacturer of personal computer printers. From 1957 to 1982, he was General
Manager of the Retail Distribution Business Unit and Director of Systems
Marketing at IBM. Mr. Klein is a director of QuickSite Corporation and serves as
a trustee of the Computer Museum in Boston, Massachusetts. Mr. Klein holds a
B.S. in Mathematics from St. Vincent's College.

    MICHAEL P. O'REILLY has served as a director of GraphOn since December 18,
1998. Mr. O'Reilly has served as Executive Vice President, Finance, Chief
Financial Officer and Treasurer of Corel Corporation since December, 1997. Prior
to joining Corel, from 1988 until 1997, Mr. O'Reilly was a senior tax partner in
the Ottawa practice of KPMG, the international professional advisory services
firm.

                                       55
<PAGE>
Mr. O'Reilly is a Chartered Accountant. He holds a B.A. from the University of
Western Ontario and an Hons. B. Comm from the University of Windsor. Mr.
O'Reilly is a nominee of Corel.

    PRAKASH JADEJA has served as Director of Engineering of GraphOn since
September 1997. From February 1996 to August 1997, Mr. Jadeja led the Digital
Video Disc and Compact Disc Recordable System software group at Apple Computer.
From February 1992 to January 1996, Mr. Jadeja was Vice President of Engineering
at Workstation, Inc. Prior to that, Mr. Jadeja held a number of technical and
management positions at Insignia Solutions, Inc., which he co-founded. Mr.
Jadeja holds a B.S. in Applied Computer Science from De Montford University in
England.

    MICHAEL HOEGEMAN has served as Principal Architect for GraphOn since May
1996. Prior to joining GraphOn, beginning in 1995, Mr. Hoegeman worked as a
contractor and lead developer for GraphOn's GO-Global and GO-Joe products. From
1985 to 1996, Mr. Hoegeman held several senior UNIX development positions at
GTE. Mr. Hoegeman holds a B.S. in Mathematics from the University of California
at Santa Barbara. Mr. Hoegeman has entered into license agreements with GraphOn
providing for royalty payments. See "Business of GraphOn-Proprietary
Technology".

    ROBERT CURREY has served as Principal Architect and developer for GraphOn
since June 1998. Prior to joining GraphOn, beginning in November 1996, Mr.
Currey served as team leader at Exodus Technologies. Mr. Currey was Senior
Engineer at Connectsoft Corp. from January 1994 until November 1996. Previously,
Mr. Currey was Senior Engineer at Attachmate Corp. from June 1992 to January
1994. Mr. Currey has an M.S. in computer science and a B.S. in applied
mathematics from Oregon State University.

    WILLIAM TIDD has served as Director of Software Development for GraphOn
since January 1999. Prior to joining GraphOn, from 1996 to 1998, Mr. Tidd served
on the jBridge development team for Corel Corporation. Mr. Tidd owned and
operated Tirel Corporation, a software development company, from 1994 to 1996
after co-founding Atlantic Design Systems, which became Tirel Corporation in
1994. Mr. Tidd holds a Master of Engineering Degree in mechanical engineering
from Carnegie Mellon University.

GRAPHON BOARD AND COMMITTEES

    The GraphOn board consists of six individuals and may be expanded to consist
of a maximum of seven individuals. The bylaws of GraphOn provide for cumulative
voting for directors. Spencer Trask has the right to designate one individual
reasonably acceptable to GraphOn to be a nominee to serve as a director of
GraphOn until the earlier of October 28, 2003 or the effective date of an
initial public offering of GraphOn's equity securities. Some of GraphOn's
officers, directors and holders of 5% or more of the shares of GraphOn common
stock have agreed to vote their shares in favor of Spencer Trask's nominee.
GraphOn has determined that the merger will constitute an initial public
offering. Thus, if the merger is completed, Spencer Trask will no longer be
entitled to a board seat. In addition, Corel has a contractual right to
designate one individual to be a nominee to serve as a director of GraphOn until
Corel controls less than 17% of the voting power of GraphOn. GraphOn also agreed
not to reduce the size of the GraphOn board below six without Corel's prior
written consent, until the date which is two years after the date of the initial
public offering of GraphOn's equity securities or the closing of the sale of all
or substantially all of its assets or of any merger or consolidation with any
other entity. The non-employee directors are eligible to participate in the
GraphOn stock option plan.

    GraphOn has established an audit committee which reviews and supervises
GraphOn's financial controls, including selection of its auditors, reviewing the
books and accounts, meeting with its officers regarding its financial controls,
acting upon recommendations of auditors and taking further actions as the audit
committee deems necessary to complete an audit of GraphOn's books and accounts.
The audit committee also evaluates potential conflicts of interest between
GraphOn and its executive officers and directors and serves to evaluate any
transactions or events which could be deemed to be

                                       56
<PAGE>
improper, as well as other matters which may come before it or as directed by
the board. The audit committee currently consists of two directors, Messrs.
O'Reilly and Kim.

    GraphOn has established a compensation committee, which reviews and approves
the compensation and benefits for GraphOn's executive officers, administers its
stock plans and performs other duties as may from time to time be determined by
the board. The compensation committee currently consists of two directors,
Messrs. Dilworth and Klein.

EXECUTIVE COMPENSATION AND EMPLOYMENT AGREEMENTS

    The compensation for GraphOn's key management is determined from time to
time by the GraphOn board or compensation committee. In addition, the GraphOn
board or compensation committee may, in its discretion, award these individuals
cash bonuses, options to purchase shares of the GraphOn common stock under the
Stock Option Plan, and such other compensation, including equity-based
compensation, as the GraphOn board or compensation committee shall approve from
time to time. In the event the merger is consummated, the determination of such
compensation, including any awards of cash bonuses, options or other
compensation, will be subject to the discretion of the Unity board.

    The following table sets forth information with respect to the compensation
of GraphOn's Chief Executive Officer and each of the two other executive
officers of GraphOn who were serving as executive officers of GraphOn during
fiscal year 1998 and whose total annual salary and bonus during such fiscal year
exceeded $100,000.

    SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                ANNUAL COMPENSATION ($)
                                                                                -----------------------     ALL OTHER
NAME AND PRINCIPAL POSITION                                            YEAR       SALARY       BONUS     COMPENSATION ($)
- -------------------------------------------------------------------  ---------  ----------  -----------  ----------------
<S>                                                                  <C>        <C>         <C>          <C>
Walter Keller......................................................       1998  $  135,181           0               0
  President and Chief Executive Officer

Robin Ford.........................................................       1998     141,960           0               0
  Executive Vice President, Marketing and Sales

Zdravko Podolski(1)................................................       1998      94,750           0      $   75,000
  Vice President, Strategic Sales and Alliances
</TABLE>

- ------------------------

(1) Mr. Podolski's employment with GraphOn was terminated on September 1, 1998.
    Pursuant to a severance agreement with Mr. Podolski, GraphOn paid him
    $75,000 in consideration for the release of any and all claims he may have
    had against GraphOn.

    OPTION GRANTS IN FISCAL YEAR 1998

    No options were granted to the above named executive officers in fiscal year
1998.

    AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND LAST FISCAL YEAR-END
     OPTION VALUES

    No options or stock appreciation rights were exercised by the above named
executive officers during fiscal year 1998, and no options or stock appreciation
rights were owned by them on December 31, 1998.

                                       57
<PAGE>
    EMPLOYMENT AGREEMENTS

    On October 22, 1998, GraphOn entered into employment agreements with Mr.
Keller and Ms. Ford which provide for a term of two years, annual base salaries
of $140,000 and $130,000, respectively, and eligibility to receive bonuses at
the discretion of the GraphOn board. Such agreements contain provisions for
bonuses upon achievement of milestones set forth in such agreements,
non-competition for the term of each agreement and confidentiality. The base
salaries are subject to change at the discretion of the GraphOn board. Mr.
Keller and Ms. Ford also are entitled to participate in any pension, insurance
or benefit plan of GraphOn, including the GraphOn stock option plan. Each
employment agreement also provides for a severance payment in the amount of one
year's compensation in the event that the employee is terminated by GraphOn
without cause, or the employee resigns for Good Reason (as defined in the
agreement) during the employment term. Good Reason includes, among other things,
the failure of a successor to GraphOn to assume the employment agreements in
connection with change in control transactions such as a merger, consolidation
or a sale of all or substantially all of GraphOn's assets, including this
merger. Good Reason also includes substantial changes in the duties, position,
compensation and location of the employment. In the event this merger is
consummated, any changes in base salary or bonus awards will be subject to the
discretion of the Unity board.

    On February 8, 1999, GraphOn entered into an employment agreement with Mr.
Becmer providing for employment at-will, an annual base salary of $125,000 and
options to purchase up to 125,000 shares of common stock under GraphOn's Stock
Option/Stock Issuance Plan. 7,813 of these options vested on May 8, 1999 and the
remaining options will vest monthly in 45 equal installments. The base salary is
subject to annual review by the GraphOn board. The agreement provides for
eligibility to receive an additional 25,000 options upon meeting quarterly
management objectives during his first year of employment. Mr. Becmer also is
entitled to participate in any pension, insurance or benefit plan of GraphOn
including the GraphOn stock option plan. The agreement provides for a severance
payment in the amount of six months' compensation in the event of a termination
due to a merger or acquisition where Mr. Becmer's duties substantially change, a
reduction in his compensation, a relocation or the failure of any successor to
GraphOn to assume the agreement.

1998 STOCK OPTION/STOCK ISSUANCE PLAN

    GraphOn's 1998 Stock Option/Stock Issuance Plan is intended to promote the
interests of GraphOn by providing eligible persons with the opportunity to
acquire a proprietary interest, or otherwise increase their proprietary
interest, in GraphOn as an incentive for them to remain in service of GraphOn.
The plan was adopted by the GraphOn board on June 23, 1998 and was approved by
the shareholders on June 23, 1998.

    A total of 1,300,000 shares of common stock were authorized for issuance
under the plan to officers and other employees of GraphOn, the non-employee
board members and independent consultants in GraphOn's service. On May 28, 1999,
the number of shares authorized for issuance under the plan was increased by
2,700,000 to 4,000,000. However, in no event may any one participant in the plan
receive option grants or direct stock issuances for more than 500,000 shares of
common stock in the aggregate per calendar year.

    The shares of common stock reserved for issuance under the plan are made
available from authorized but unissued common stock or from shares of common
stock reacquired by GraphOn, including shares repurchased on the open market.
Should an option expire or terminate for any reason prior to exercise in full,
the shares subject to the portion of the option not so exercised will be
available for subsequent issuance under the plan. Unvested shares issued under
the plan and subsequently repurchased by GraphOn will be added back to the share
reserve and will accordingly be available for subsequent issuance under the
plan.

                                       58
<PAGE>
    As of May 15, 1999, options for 818,500 shares of common stock were
outstanding under the plan, no options had been exercised, an additional 435,056
shares had been issued directly under the stock issuance program and 2,746,444
shares remained available for future issuance under the plan.

    The compensation committee of the board will have exclusive authority to
administer the plan with respect to option grants and stock issuances made to
GraphOn's executive officers and non-employee board members. The compensation
committee and a secondary committee of one or more board members will each have
separate but concurrent authority to make option grants and stock issuances
under those programs to all other eligible individuals. The term "plan
administrator," as used in this description of the plan, will mean either the
compensation committee or the secondary committee, to the extent each such
entity is acting in its capacity as administrator of the plan.

    The plan is divided into two separate components:

    - the option grant program under which eligible individuals may, at the
      discretion of the plan administrator, be granted options to purchase
      shares of common stock at an exercise price not less than 85% of their
      fair market value on the grant date and

    - the stock issuance program under which such individuals may, in the
      discretion of the plan administrator, be issued shares of common stock
      directly, through the purchase of vested or unvested shares at a price not
      less than 85% of their fair market value at the time of issuance or as a
      fully-vested bonus for past services rendered to GraphOn.

    The shares subject to each option granted under the option grant program and
unvested shares issued under the stock issuance program will vest in one or more
installments over the recipient's period of service with GraphOn. However, no
vesting schedule will be at a rate less than 20% per year, with the initial
vesting to occur no later than one year after the grant date of the option or
the issue date of the unvested shares. No granted option may have a term in
excess of ten years, and each granted option will be subject to earlier
termination within a designated period following the optionee's cessation of
service with GraphOn.

    The exercise price may be paid in cash or in shares of common stock. Options
may also be exercised for vested shares through a same-day sale program,
pursuant to which a designated brokerage firm effects the immediate sale of
those shares and pays over to GraphOn, out of the sale proceeds available on the
settlement date, sufficient funds to cover the exercise price for the purchased
shares. In addition, the plan administrator may provide financial assistance to
one or more participants in connection with the exercise of their outstanding
options or the purchase of their unvested shares by allowing such individuals to
deliver a full-recourse, interest-bearing promissory note in payment of the
exercise or purchase price and any associated withholding taxes incurred in
connection with such exercise or purchase.

    In the event that GraphOn is acquired by merger or sale of substantially all
of its assets, each outstanding option under the option grant program which is
not to be assumed by the successor corporation or otherwise continued in effect
will automatically accelerate in full, and all unvested shares under the plan
will immediately vest, except to the extent GraphOn's repurchase rights with
respect to those shares are assigned to the successor corporation or otherwise
continued in effect. The plan administrator will have complete discretion to
grant one or more options under the option grant program which will become
exercisable on an accelerated basis for all of the option shares upon either:

    - an acquisition of GraphOn, whether or not those options are assumed or
      otherwise continued in effect or

    - the termination of the optionee's service within a designated period
      following an acquisition in which those options are assumed or continued
      in effect.

The vesting of outstanding shares under the stock issuance program may be
accelerated upon similar terms and conditions. Unity will assume all outstanding
GraphOn options in the merger, and none of

                                       59
<PAGE>
the shares subject to those options will vest on an accelerated basis at the
time of the merger. The option holders will continue to vest in the Unity shares
subject to their assumed options in accordance with the same vesting schedule in
effect for their GraphOn options immediately prior to the merger.

    The plan administrator also is authorized under the option grant and stock
issuance programs to grant options and to structure repurchase rights so that
the shares subject to those options or repurchase rights will immediately vest
in connection with a change in ownership or control of GraphOn, whether by
successful tender offer for more than 50% of the outstanding voting stock or by
a change in the majority of the board by reason of one or more contested
elections for board membership. Such accelerated vesting may occur either at the
time of such change in ownership or control or upon the subsequent involuntary
termination of the individual's service within a designated period, not to
exceed 18 months, following such change in ownership or control.

    In the event any change is made to the outstanding shares of common stock by
reason of any recapitalization, stock dividend, stock split, combination of
shares, exchange of shares or other change in corporate structure effected
without GraphOn's receipt of consideration, appropriate adjustments will be made
to:

       - the maximum number and/or class of securities issuable under the plan;

       - the number and/or class of securities for which any one person may be
         granted stock options and direct stock issuances under the plan per
         calendar year; and

       - the number and/or class of securities and the exercise price per share
         in effect under each outstanding option.

Such adjustments will be designed to preclude any dilution or enlargement of
benefits under the plan or the outstanding options granted pursuant to the plan.

    The plan administrator has the authority to effect the cancellation of
outstanding options under the option grant program in return for the grant of
new options for the same or different number of option shares with an exercise
price per share based upon the fair market value of the common stock on the new
grant date.

    The board may amend or modify the plan at any time. The plan will terminate
on June 22, 2007, unless sooner terminated by the board or in connection with an
acquisition of GraphOn in which the plan is not assumed by the acquiring entity.

    If the merger is consummated, the plan and all outstanding options will be
assumed by Unity. The Unity board will become the plan administrator and all
references in the plan to an acquisition or other change in control of GraphOn
will be applied on the basis of an acquisition or other change in control of
Unity.

                     CERTAIN RELATIONSHIPS AND TRANSACTIONS

    Mr. Keller, Chairman of the GraphOn board and President of GraphOn, sold to
Mr. Bevilacqua

       - on January 1, 1998, 35,004 shares of GraphOn common stock for an
         aggregate purchase price of $700 and

       - on August 20, 1998, 68,238 shares of GraphOn common stock for an
         aggregate purchase price of $5,118.

Mr. Bevilacqua is a director and Secretary of GraphOn and a former partner in
the law firm of Brobeck, Phleger & Harrison LLP, which firm GraphOn retains for
legal services. The 68,238 shares originally were subject to Mr. Keller's right
of repurchase which lapses monthly in a series of equal monthly installments
upon Mr. Bevilacqua's completion of each month of service on the GraphOn board
until May 2000. In addition, Mr. Keller has a right of first refusal exercisable
in connection with any proposed transfer of such shares for which the repurchase
right has lapsed.

                                       60
<PAGE>
    As of August 20, 1998, Mr. Keller sold 100,000 shares of GraphOn common
stock to Mr. Bradlee, a former executive officer of GraphOn, for an aggregate
purchase price of $7,500 evidenced by a full-recourse note secured by the shares
purchased. The note bears interest at the rate of 5.41% per annum, compounded
semi-annually. The 100,000 shares originally were subject to Mr. Keller's right
of repurchase which began to lapse November 20, 1998 in a series of 45
successive, equal monthly installments upon Mr. Bradlee's completion of each
month of service with GraphOn. In addition, Mr. Keller had a right of first
refusal exercisable in connection with any proposed transfer of such shares for
which the repurchase right has lapsed. Upon the end of Mr. Bradlee's employment
with GraphOn in May 1999, Mr. Keller repurchased 86,666 of such shares paid for
by forgiving $6,500 of the note.

    As of August 20, 1998, Mr. Keller sold 25,000 shares of GraphOn common stock
to Mr. Klein, a director of GraphOn, for an aggregate purchase price of $1,875.
The 25,000 shares are subject to Mr. Keller's right of repurchase which began to
lapse November 20, 1998 in a series of 21 successive, equal monthly installments
upon Mr. Klein's completion of each month of consulting services to GraphOn. In
addition, Mr. Keller has a right of first refusal exercisable in connection with
any proposed transfer of such shares for which the repurchase right has lapsed.

    As of August 20, 1998, Messrs. Kim, Dilworth and Klein, directors of
GraphOn, were each issued 75,000 shares of GraphOn common stock under the
GraphOn stock option plan at a purchase price of $0.075 per share. Such shares
are subject to GraphOn's right of repurchase which began to lapse November 20,
1998 in a series of 45 successive, equal monthly installments upon completion of
each month of service on the GraphOn board until May 2000.

    In March 1998, Spencer Trask Investors, an affiliate of Spencer Trask,
purchased 500,000 shares of GraphOn common stock from GraphOn for an aggregate
purchase price of $25,000. Concurrently with such transaction, Spencer Trask
Investors loaned GraphOn $475,000 evidenced by a Convertible Promissory Note,
bearing interest at a rate of 10% per annum. The Convertible Promissory Note was
redeemed by GraphOn on January 27, 1999.

    In March 1998, Spencer Trask Investors, an affiliate of Spencer Trask,
entered into a sale arrangement with Mr. Keller and Ms. Ford, Executive Vice
President, Marketing and Sales, of GraphOn, with respect to the sale of an
aggregate of 3,500,000 shares of GraphOn common stock for aggregate
consideration of $3,500,000, comprised of $200,000 cash, a non-recourse
promissory note in the principal amount of $800,000 which became due on January
20, 1999, a non-recourse promissory note in the principal amount of $1,000,000
which becomes due on July 20, 1999, and a non-recourse promissory note in the
principal amount of $1,500,000 which becomes due on January 20, 2000. Each of
the foregoing notes bears interest at the rate of 6% per annum, payable
quarterly, and each note is secured by a pledge of the shares purchased, with
one share pledged for each $1.00 of principal amount. The shares of GraphOn
common stock pledged with respect to each note were placed in escrow until
payment in full of the principal and accrued interest of the note representing
the purchase price of such shares. The $800,000 note was paid by Spencer Trask
Investors and the 800,000 shares pledged with respect to such note were released
from escrow on January 20, 1999. In the event that a note is not paid, the
shares securing it will be released to Mr. Keller and Ms. Ford, who also
maintain voting control over such pledged shares unless and until the related
notes are fully paid and the shares are released to Spencer Trask Investors.
Spencer Trask Investors has registration rights in connection with the
above-mentioned shares of GraphOn common stock. See "Description of GraphOn's
Securities-Registration Rights."

    In connection with the issuance and sale by GraphOn of an aggregate of
5,162,868 shares of GraphOn common stock for an aggregate purchase price of
$5,162,868 in three separate closings, the final such closing occurring January
27, 1999, in connection with and pursuant to the terms of a private placement
memorandum and related agreements (the "private placement"), GraphOn entered
into a placement agency agreement, dated September 2, 1998, with Spencer Trask.
Pursuant to the placement agency agreement, Spencer Trask received a fee equal
to 10% of the aggregate offering price for the

                                       61
<PAGE>
GraphOn common stock sold in the private placement. In addition, GraphOn issued
to Spencer Trask the Spencer Trask Warrants. See "Description of GraphOn's
Securities-Spencer Trask Warrants and Similar Warrants." Spencer Trask, together
with its affiliates, holds an aggregate of 2,266,279 shares of GraphOn common
stock and warrants to purchase GraphOn common stock.

    Mr. Bevilacqua, together with his wife, Therese Mrozek, currently a partner
in the law firm of Brobeck, Phleger & Harrison LLP, purchased 5,000 shares of
GraphOn common stock in the private placement for an aggregate purchase price of
$5,000 and Brobeck, Phleger & Harrison LLP purchased 50,000 shares for an
aggregate purchase price of $50,000.

    Spencer Trask Investors and Mr. Keller, upon the commencement of the private
placement, loaned $200,000 and $100,000, respectively, to GraphOn pursuant to
convertible promissory notes which bore interest at 8% per annum and matured at
the earlier of the first closing of the private placement or 12 months from the
date of the notes. Spencer Trask converted the $200,000 note into 200,000 shares
of GraphOn common stock on December 31, 1998 and GraphOn paid the $100,000 note
held by Mr. Keller on that same date. In addition, Spencer Trask Investors was
issued, upon the commencement of the private placement, a warrant to purchase
100,000 shares of GraphOn common stock at $1.00 per share, and Mr. Keller was
issued a warrant to purchase 50,000 shares of GraphOn common stock at $1.00 per
share. See "Description of GraphOn's Securities-Spencer Trask Warrants and
Similar Warrants."

    On December 31, 1998, in consideration of tangible and intangible assets,
GraphOn sold to Corel Corporation 3,886,503 shares of GraphOn common stock and a
warrant to purchase up to 388,650 shares of GraphOn common stock. GraphOn also
granted Corel the right to appoint a nominee to the GraphOn board and
registration and preemptive rights with respect to such shares. See "Management
of GraphOn-Board of Directors" and "Description of GraphOn's Securities--Corel
Warrant and Similar Warrant." Additionally, as of June 30, 2000, if GraphOn has
not completed the initial public offering of its securities or the closing of
the sale, conveyance or disposal of all or substantially all of its property or
any merger or consolidation with any other entity, GraphOn shall become
obligated to issue Corel an additional 1,607,000 shares of GraphOn common stock,
for no additional consideration. If the merger is consummated, Corel will not
receive such shares.

    If the merger is consummated, in consideration of consulting services
performed in connection with the merger, Unity will issue to Spencer Trask
250,000 Class A redeemable common stock purchase warrants, exercisable for an
aggregate of up to 250,000 shares of Unity common stock at an exercise price of
$5.50 per share, and pay Spencer Trask up to $575,000.

                       PRINCIPAL SHAREHOLDERS OF GRAPHON

    The following table sets forth information known to GraphOn as of May 15,
1999 and as of such date, giving effect to the merger, based on information
obtained from the persons named below, with respect to the beneficial ownership
of shares of GraphOn common stock held by

    - each person known by GraphOn to be the owner of 5% or more of the
      outstanding shares of GraphOn common stock;

    - each director of GraphOn; and

    - all executive officers and directors of GraphOn as a group.

                                       62
<PAGE>
    Unless otherwise indicated, the address for each shareholder is c/o GraphOn
Corporation, 150 Harrison Avenue, Campbell, CA 95008.

<TABLE>
<CAPTION>
                                                            BENEFICIAL OWNERSHIP OF
                                                                 GRAPHON COMMON          BENEFICIAL OWNERSHIP OF UNITY
                                                         STOCK PRIOR TO THE MERGER (1)               COMMON
                                                                                           STOCK AFTER THE MERGER (2)
                                                         ------------------------------  ------------------------------
<S>                                                      <C>                <C>          <C>                <C>
                                                         NUMBER OF SHARES     PERCENT    NUMBER OF SHARES     PERCENT
                                                         -----------------  -----------  -----------------  -----------

Corel Corporation (3)..................................       4,275,153           25.6%       2,383,825           21.3%
  1600 Carling Avenue
  Ottawa, Ontario
  K1Z 8R7, Canada

Spencer Trask Holdings, Inc. (4).......................       2,206,759           13.0%       1,480,488(5)        12.8%
  535 Madison Avenue
  New York, NY 10022

Walter Keller (6)......................................       2,603,412           15.9%       1,451,662           13.2%

Thomas A. Bevilacqua...................................         108,242              *           60,355              *

Robert Dilworth........................................          75,000              *           41,820              *

Eric Kim (7)...........................................         130,700              *           72,878              *

August P. Klein........................................         100,000              *           55,760              *

Michael O'Reilly (3)...................................       4,275,153           25.6%       2,383,825           21.3%

Robin Ford (8).........................................       1,900,000           11.7%       1,059,440            9.7%

Vince Pfeifer (9)......................................          29,116              *           16,235              *

Edmund Becmer (10).....................................          13,020              *            7,259              *

All executive officers and directors as a group (9
  persons) (11)........................................       9,234,643           54.9%       5,149,236           45.8%
</TABLE>

- ------------------------

*   Denotes less than 1% of outstanding GraphOn common stock

(1) As used in this joint proxy statement/prospectus, beneficial ownership means
    the sole or shared power to vote, or direct the voting of, a security, or
    the sole or shared power to invest or dispose, or direct the investment or
    disposition, of a security. Except as otherwise indicated, all persons named
    in this joint proxy statement/prospectus have sole voting power and
    investment power with respect to their respective shares of GraphOn common
    stock, except to the extent that authority is shared by spouses under
    applicable law, and record and beneficial ownership with respect to their
    respective shares of GraphOn common stock. With respect to each shareholder,
    any shares issuable upon exercise of all options and warrants held by such
    shareholder that are currently exercisable or will become exercisable within
    60 days of May 15, 1999 are deemed outstanding for computing the percentage
    of the person holding such options but are not deemed outstanding for
    computing the percentage of any other person. Percentage ownership of
    GraphOn common stock prior to the merger is based on 16,296,559 shares of
    GraphOn common stock outstanding as of May 15, 1999.

(2) Assumes no cash conversions of Unity common stock by Unity stockholders or
    exercise by Unity stockholders or GraphOn shareholders of their respective
    appraisal rights. Percentage ownership of Unity common stock after the
    merger is based on 10,961,961 shares of Unity common stock to be outstanding
    upon consummation of the merger.

                                       63
<PAGE>
(3) Includes 3,886,503 shares of common stock and a warrant exercisable for up
    to 388,650 shares of GraphOn common stock at an exercise price of $1.00 per
    share held by Corel. Mr. O'Reilly is the Executive Vice President, Finance,
    Chief Financial Officer and Treasurer of Corel and a director of GraphOn.
    However, Mr O'Reilly disclaims beneficial ownership of all of these shares.

(4) Includes 170,000 shares held by Spencer Trask, 1,287,000 shares held by
    Kevin Kimberlin Partners, L.P. ("KKP"), an affiliate of Spencer Trask
    Holdings, Inc., the 100% owner of Spencer Trask, 67,500 shares and warrants
    exercisable for up to an aggregate of 119,980 shares of GraphOn common stock
    at an exercise price of $1.00 per share held by William P. Dioguardi, the
    President of the Spencer Trask, three warrants exercisable for up to an
    aggregate of 105,760 shares of GraphOn common stock at an exercise price of
    $1.00 per share held by KKP, a warrant exercisable for up to an aggregate of
    21,990 shares of GraphOn common stock at an exercise price of $1.00 per
    share held by Kevin Kimberlin, a general partner of KKP and a majority
    holder of Spencer Trask Holdings, and four warrants exercisable for up to an
    aggregate of 434,529 shares of GraphOn common stock at an exercise price of
    $1.00 per share held by Spencer Trask Holdings. Excludes 582,259 shares of
    GraphOn common stock issuable upon exercise of the Spencer Trask Warrants in
    which Spencer Trask has no beneficial interest. See "Description of
    GraphOn's Securities--Spencer Trask Warrants and Similar Warrants."

(5) Includes 250,000 shares of Unity common stock issuable upon exercise of
    250,000 Class A redeemable common stock purchase warrants at an exercise
    price of $5.50, to be issued to Spencer Trask upon completion of the merger.

(6) Includes 500,000 shares of GraphOn common stock placed in escrow with
    Brobeck, Phleger & Harrison LLP ("BPH"), as escrow agent, to be sold to
    Spencer Trask Investors on July 20, 1999, and 750,000 shares of GraphOn
    common stock placed in escrow with BPH to be sold to Spencer Trask Investors
    on January 20, 2000. During the respective escrow periods, Mr. Keller cannot
    sell or otherwise transfer such shares but retains all other shareholder
    rights, including, without limitation, the right to vote such shares. Also
    includes a warrant exercisable for up to 50,000 shares of GraphOn common
    stock at an exercise price of $1.00 per share and 40,000 shares of GraphOn
    common stock held by relatives of Mr. Keller who, at the option of Spencer
    Trask, can be required to enter into a voting agreement granting Mr. Keller
    the right to vote such shares. Mr. Keller and Ms. Ford are husband and wife.
    See Footnote 8.

(7) Includes a warrant exercisable for up to 55,700 shares of GraphOn common
    stock at an exercise price of $1.00 per share.

(8) Includes 500,000 shares of GraphOn common stock placed in escrow with BPH,
    as escrow agent, to be sold to Spencer Trask Investors on July 20, 1999, and
    750,000 shares of GraphOn common stock placed in escrow with BPH to be sold
    to Spencer Trask Investors on January 20, 2000. During the respective escrow
    periods, Ms. Ford cannot sell or otherwise transfer such shares but retains
    all other shareholder rights, including, without limitation, the right to
    vote such shares. Also includes 30,000 shares held by relatives of Ms. Ford
    who, at the option of Spencer Trask, can be required to enter into a voting
    agreement granting Ms. Ford the right to vote such shares. Mr. Keller and
    Ms. Ford are husband and wife. See Footnote 6.

(9) Includes options exercisable for up to 4,116 shares of GraphOn common stock
    at an exercise price of $0.85 per share.

(10) Includes options exercisable for up to 13,020 shares of GraphOn common
    stock at an exercise price of $0.85 per share.

(11) See footnotes 6 through 10 above. Includes warrants held by Mr. Keller, Mr.
    Kim and Corel exercisable for up to 494,350 shares of GraphOn common stock
    at an exercise price of $1.00 per share and options exercisable for up to
    17,136 shares of GraphOn common stock under the GraphOn stock option plan
    held by two officers of GraphOn.

                                       64
<PAGE>
                      DESCRIPTION OF GRAPHON'S SECURITIES

GENERAL

    GraphOn is authorized to issue 50,000,000 shares of GraphOn common stock, no
par value per share, and 5,000,000 shares of "blank check" preferred stock, no
par value per share. As of May   , 1999, 16,296,559 shares of GraphOn common
stock were outstanding, held of record by approximately 211 persons. No shares
of GraphOn preferred stock are outstanding.

COMMON STOCK

    The holders of GraphOn common stock are entitled to one vote for each share
held of record on all matters to be voted on by shareholders. Cumulative voting
with respect to the election of directors is permitted, with the result that it
is a lengthier and more difficult process to effect a change in the composition
of the GraphOn board and a potential change in control of the corporation. If
the merger is consummated, cumulative voting with respect to the election of
directors will continue to be permitted.

    The holders of GraphOn common stock are entitled to receive dividends when,
as and if declared by the GraphOn board out of funds legally available therefor.
In the event of liquidation, dissolution or winding up of GraphOn, the holders
of GraphOn common stock are entitled to share ratably in all assets remaining
available for distribution to them after payment of liabilities and after
provision has been made for each class of stock, if any, having preference over
the GraphOn common stock. Holders of shares of GraphOn common stock, as such,
have no redemption, preemptive or other subscription rights. There are no
conversion provisions applicable to the GraphOn common stock. All of the
outstanding shares of GraphOn common stock are fully paid and nonassessable.

    If the merger is completed, except with respect to those shares as to which
dissenters' rights have been perfected, each then outstanding share of GraphOn
common stock will be converted into the right to receive approximately .5576 of
a share of Unity common stock. For a description of Unity common stock, see
"Description of Unity's Securities--Common Stock."

PREFERRED STOCK

    The GraphOn preferred stock may be issued with such designation, rights and
preferences as may be determined from time to time by the GraphOn board.
Additionally, the GraphOn board may determine the timing, series and number of
shares of GraphOn preferred stock to be issued. Accordingly, the GraphOn board
is empowered, without shareholder approval, to issue GraphOn preferred stock
with dividend, liquidation, conversion, voting or other rights that could
adversely affect the voting power or other rights of the holders of GraphOn
common stock. Similar to Unity preferred stock, the GraphOn preferred stock
could be utilized as a method of discouraging, delaying or preventing a change
in control of GraphOn if the merger is not completed. Although GraphOn does not
currently intend to issue any shares of GraphOn preferred stock, there can be no
assurance that GraphOn will not do so at some future date if the merger is not
consummated.

DIVIDENDS

    GraphOn never has paid a dividend and is not likely to pay one in the
foreseeable future. If the merger is completed, the payment of any subsequent
dividends will be in the discretion of the Unity board and will be dependent
upon Unity's results of operations, financial condition, contractual
restrictions and other factors deemed relevant by the Unity board. See
"Description of Unity's Securities-- Dividends."

                                       65
<PAGE>
PREEMPTIVE RIGHTS

    Holders of the private placement shares and Corel have the right to
participate on a pro rata basis in future private offerings of GraphOn
securities until such time as GraphOn completes an initial public offering.
GraphOn has determined that the merger will constitute an "initial public
offering." Thus, if the merger is completed, such rights will be of no further
force and effect.

SPENCER TRASK WARRANTS AND SIMILAR WARRANTS

    GraphOn issued warrants to Spencer Trask to purchase up to an aggregate of
1,032,574 shares of GraphOn common stock. Spencer Trask subsequently transferred
its interests in 582,259 of such warrants to nonaffiliated parties. The exercise
price of such warrants is $1.00 per share. The Spencer Trask Warrants are
exercisable until the later of January 27, 2006 or three years after an initial
public offering or this merger. The exercise price and number of shares of
GraphOn common stock issuable on exercise of the warrants are subject to
adjustment in particular circumstances, including in the event of a stock
dividend, recapitalization, subdivision or consolidation of GraphOn, or issuance
of GraphOn common stock, or options, rights or warrants to subscribe for shares
of GraphOn common stock, or securities convertible into or exchangeable for
shares of GraphOn common stock, at a price below their respective exercise
prices.

    The Spencer Trask warrants may be exercised upon surrender of the
certificate evidencing the respective warrant on or prior to the expiration date
at the offices of GraphOn, with the annexed exercise form completed and executed
as indicated, accompanied by full payment of the exercise price to GraphOn for
the number of warrant shares being exercised. The exercise price may be paid by
certified or official bank check, in shares of GraphOn common stock or by the
"net issuance" method. The holders of Spencer Trask warrants do not have the
rights or privileges of holders of GraphOn common stock. No fractional shares
will be issued upon exercise of such warrants. However, GraphOn will pay to such
warrantholder, in lieu of the issuance of any fractional share which otherwise
is issuable to such warrantholder, an amount in cash based on the fair market
value of GraphOn common stock as determined in good faith by the GraphOn board.

    Spencer Trask Investors, an affiliate of Spencer Trask, and Mr. Keller hold
warrants exercisable for up to 100,000 and 50,000 shares, respectively, of
GraphOn common stock, the terms of which are substantially the same as those of
the Spencer Trask Warrants.

    If not exercised prior to the effective time of the merger, Unity shall
assume GraphOn's obligations with respect to the Spencer Trask Warrants and the
warrants held by Spencer Trask Investors and Mr. Keller, which shall be
exercisable for up to 575,763, 55,760 and 27,880 shares of Unity common stock,
respectively, at an exercise price of approximately $1.79 per share.

COREL WARRANT AND SIMILAR WARRANT

    Corel and one additional shareholder holding less than 1% of the outstanding
shares of GraphOn hold an aggregate of two warrants to purchase up to 388,650
and 1,213 shares of GraphOn common stock, respectively. The exercise price of
such warrants is $1.00 per share, and they are exercisable until December 18,
2003. The exercise price and number of shares of GraphOn common stock issuable
on exercise of such warrants are subject to adjustment in particular
circumstances, including in the event of a stock dividend, subdivision or
combination of GraphOn capital stock, reclassification, capital reorganization
or change in GraphOn capital stock, or consolidation, merger or sale of all or
substantially all of GraphOn's assets. Such warrants may be exercised upon
surrender of the certificates evidencing them, with the annexed exercise form
completed and executed as indicated, accompanied by full payment of the exercise
price to GraphOn for the number of warrant shares being exercised. The exercise
price may be paid by cash or check or by the "net issuance" method. Holders of
the warrants, as such, are not entitled to the rights or privileges of holders
of GraphOn common stock. No fractional shares

                                       66
<PAGE>
will be issued upon exercise of such warrants. However, GraphOn will pay to such
warrantholders, in lieu of the issuance of any fractional share which otherwise
is issuable to such warrantholders, an amount in cash based on the fair market
value of GraphOn common stock as determined in good faith by the GraphOn board.

    If not exercised prior to the effective time of the merger, Unity shall
assume GraphOn's obligations under such warrants which shall be exercisable for
up to 216,711 and 676 shares of Unity common stock, respectively, at an exercise
price of approximately $1.79 per share.

REGISTRATION RIGHTS

    Holders of shares of GraphOn common stock acquired in the private placement,
as well as Mr. Keller and Spencer Trask Investors, hold automatic, demand and
incidental registration rights under a registration rights agreement. GraphOn
agreed to file a registration statement under the Securities Act for the resale
of the private placement shares and such other shares:

    - in the event of the closing of an initial public offering prior to January
      27, 2001, not later than the expiration of the lock-up period (as defined
      in the registration rights agreement); provided, however, that any holder
      of such shares may exclude all or a portion of such shares from such
      registration and GraphOn shall have no obligation to register shares that
      are freely tradable without restriction; and

    - in the event that no initial public offering has been completed by January
      27, 2002, on two occasions upon demand of the holders of at least a
      majority of the total registrable securities, as defined in the
      registration rights agreement, then outstanding.

GraphOn also has agreed that, if at any time it registers securities, it will
include the private placement shares and some of the shares of GraphOn common
stock held by Mr. Keller and Spencer Trask Investors, subject to reduction in
some instances, upon the written request of such investors to GraphOn. All
expenses incurred in connection with such registrations shall be borne by
GraphOn, except for underwriting discounts and commissions and the costs of the
second demand registration. The registration rights agreement contains customary
indemnification and contribution provisions involving the participants in any
registration effected pursuant to such agreement. The registration rights
agreement also provides that purchasers of private placement shares appoint
Spencer Trask as their agent to negotiate on their behalf the terms of any
restrictions on the right of such purchasers to sell any of their shares which
shall be imposed by the managing underwriter of the initial public offering
including, in particular, the term of the lock-up period. If GraphOn fails to
fulfill any portion of its obligations under the registration rights agreement,
GraphOn and some of its directors, officers and principal shareholders have
agreed to give holders of the private placement shares the ability to elect a
majority of the GraphOn board in order to provide liquidity until such time as
GraphOn's registration responsibility has been fulfilled.

    In addition, holders of the Spencer Trask Warrants, Spencer Trask Investors,
Mr. Keller, Corel and one additional GraphOn shareholder are entitled to other
registration rights. GraphOn has agreed, if it has any registered securities, to
register the shares underlying the Spencer Trask warrants and other warrants
held by Spencer Trask Investors and Mr. Keller on two occasions during the term
of such warrants if requested by the holders of a majority of such warrants. The
shares underlying such warrants also have "piggy-back" registration rights until
the later of October 28, 2007 or the expiration of the period of exercisability
of such warrants. GraphOn must notify holders of the shares having such rights
of any proposed filing of a registration statement at least 30 business days
prior to the filing. Subject to and subordinate to the registration rights
granted to the holders of the private placement shares, described above, GraphOn
also granted Corel and one additional holder of GraphOn similar "piggy-back"
registration rights.

                                       67
<PAGE>
    If the merger is consummated, each outstanding share of GraphOn common stock
will be converted into the right to receive approximately .5576 of a share of
Unity common stock, which will be registered pursuant to the registration
statement filed in connection with the merger. CONSEQUENTLY, GRAPHON SHALL HAVE
NO FURTHER OBLIGATION TO REGISTER SHARES OF GRAPHON COMMON STOCK PURSUANT TO THE
AGREEMENTS DESCRIBED ABOVE.

SHARES ELIGIBLE FOR FUTURE SALE

    All outstanding shares of GraphOn common stock currently are subject to
restrictions on transfer. No outstanding shares of GraphOn common stock have
been registered under the Securities Act and must be held indefinitely unless:

    - there is in effect a registration statement under the Securities Act
      covering the proposed disposition, including, without limitation, the
      registration statement contemplated to be filed in connection with the
      merger, and such disposition is made in accordance with such registration
      statement;

    - the holder of such shares has notified GraphOn of such disposition and,
      with respect to some holders of GraphOn common stock, if reasonably
      requested by GraphOn, such holder has furnished GraphOn with an opinion of
      counsel, reasonably satisfactory to GraphOn, or, in the case of other
      shareholders, satisfactory assurances that such disposition will not
      require registration under the Securities Act; or

    - the shares are sold pursuant to Rule 144 or Rule 144A of the Securities
      Act.

    In general, under Rule 144 as currently in effect, if a minimum of one year
has elapsed between the later of the date of acquisition of the securities from
the issuer or an "affiliate" of the issuer, as that term is defined under the
Securities Act, a person, including an affiliate or person whose shares are
aggregated, holding such securities beneficially is entitled to sell, within any
three-month period, a number of such shares that does not exceed the greater of:

    - 1% of the then outstanding shares of such class of securities; or

    - the average weekly reported trading volume in such securities during the
      four calendar weeks preceding such sale.

Such sales are permitted only if

    - the issuer has been subject to the reporting requirements of the Exchange
      Act for at least 90 days before the sale and has filed all reports
      required under the Exchange Act during the 12 months preceding such sale;

    - such sale is in a brokers' transaction or directly with a market maker;
      and

    - a notice of proposed sale is filed with the SEC.

If a minimum of two years has elapsed between the later of the date of
acquisition of the securities from the issuer or an affiliate, a person or
persons whose shares are aggregated holding such securities beneficially, who is
not deemed an affiliate of the issuer, is entitled to sell such securities under
Rule 144 without regard to the limitations described above. There can be no
assurance that holders of GraphOn common stock ever will be able to rely on Rule
144 to resell such shares.

    As a condition to the merger, each holder of private placement shares must
be restricted by the terms of a lock-up agreement whereby such holder will be
prevented from selling, transferring or otherwise disposing of the shares until
the date which is six months after the effective time of the merger.

                                       68
<PAGE>
    In addition, there are 625,000 shares of Unity common stock outstanding but
not currently available for sale by the non-public Unity stockholders, including
shares held by the current officers and directors of Unity and their affiliates.
These shares may not be sold or otherwise transferred until the effective time
of the merger. Such 625,000 shares will be registered under the Securities Act
of 1933 at the effective time so as to permit such shares to be offered for sale
by their respective holders at any time and from time to time subsequent to the
merger. However, 311,500 of these shares are held by Unity stockholders who, as
a condition to the merger, must agree not to sell, pledge, transfer or otherwise
dispose of any of such shares for a period of 6 months following the effective
time. Upon consummation of the merger, approximately 9,086,961 additional shares
of Unity common stock will be outstanding. All of such shares will be registered
under the Securities Act at the effective time so as to permit such shares to be
offered for sale by their respective holders at any time and from time to time
subsequent to the merger. However, as a condition to the merger, all of
GraphOn's officers and directors and approximately 155 persons and entities who
acquired GraphOn common stock in private transactions from October 28, 1998 to
January 27, 1999, which holders, officers and directors will hold approximately
7,742,847 of the additional shares of Unity common stock to be outstanding, must
agree not to sell, pledge, transfer or otherwise dispose of any shares of Unity
common stock received in connection with the merger for a period of 6 months
from the effective time.

    Upon consummation of the merger, there also will be outstanding options and
warrants to purchase a maximum of approximately 4,858,185 shares of Unity common
stock, including:

    - approximately 1,333,185 shares issuable upon exercise or conversion of
      GraphOn's options and warrants,

    - 2,500,000 shares issuable upon exercise of Unity's Class A redeemable
      warrants and Unity's Class B redeemable warrants issued in Unity's IPO,

    - 400,000 shares issuable upon exercise of Unity's Class A redeemable
      warrants and Class B redeemable warrants issued to Unity's current
      officers and directors,

    - 375,000 shares issuable upon exercise of all of the components of the unit
      purchase warrants originally issued to the underwriters and affiliates of
      the underwriters in connection with the IPO and

    - 250,000 shares issuable upon exercise of the Class A redeemable warrants
      to be issued to Spencer Trask.

The shares of Unity common stock issuable upon exercises of such options and
warrants are being registered for sale under the Securities Act as of the date
of this joint proxy statement/prospectus. See "Description of Unity's
Securities."

    The sale of any of these shares could have an adverse effect on the future
market price of Unity common stock.

INFORMATION RIGHTS

    GraphOn contractually is obligated to provide Spencer Trask and other
GraphOn shareholders, until the earlier of October 28, 2003 or the closing of an
initial public offering, annual audited financial statements. Additionally,
Spencer Trask, holders of the private placement shares and Corel are entitled to
information rights pursuant to the terms of various agreements until the closing
of an initial public offering. GraphOn has determined that the merger will
constitute an "initial public offering." Thus, if the merger is completed,
GraphOn no longer will be contractually obligated to provide such information to
such shareholders.

                                       69
<PAGE>
TRANSFER AGENT

    The transfer agent for the GraphOn common stock is Brobeck, Phleger &
Harrison LLP, 2200 Geng Road, Two Embarcadero Place, Palo Alto, CA 94303.

                               BUSINESS OF UNITY

    Unity was formed in May 1996 to serve as a vehicle to effect a merger,
exchange of capital stock, asset acquisition or other similar business
combination with an operating business.

    In November 1996, Unity successfully consummated an IPO from which it
derived net proceeds of $6,402,112. Approximately 90% of such net proceeds,
inclusive of interest income thereon, are presently held in trust pending the
consummation of a merger and will be released to Unity upon consummation of the
merger.

    Unity's executive offices are located at 245 Fifth Avenue, New York, New
York 10016, its telephone number is (212) 696-4282.

                              MANAGEMENT OF UNITY

PRIOR TO THE MERGER

    EXECUTIVE OFFICERS AND DIRECTORS

<TABLE>
<CAPTION>
NAME                                                       AGE      POSITION
- -----------------------------------------------------      ---      -----------------------------------------------------
<S>                                                    <C>          <C>
Lawrence Burstein....................................          55   President, Treasurer and Director
John Cattier.........................................          66   Director
Barry Ridings........................................          46   Director
Norman Leben.........................................          38   Secretary and Director
</TABLE>

    LAWRENCE BURSTEIN has been President, Treasurer and a director of Unity
since its inception. For approximately ten years prior thereto, Mr. Burstein was
the President, a director and principal shareholder of Trinity Capital
Corporation, a private investment banking concern. Trinity ceased operations
upon the formation of Unity VCA. Since March 1996, Mr. Burstein has been
President and a principal shareholder of Unity VCA. Mr. Burstein is a director
of four public companies, being, respectively, T-HQ Inc., which designs and
markets Nintendo and Sega games, Brazil Fast Food Corp., the owner and operator
of the second largest fast food restaurant chain in Brazil, CAS Medical Systems,
Inc., engaged in the manufacture and marketing of blood pressure monitors and
other medical products principally for the neonatal market, and The MNI Group
Inc., engaged in the marketing of specially formulated medical foods. Mr.
Burstein received an L.L.B. from Columbia Law School.

    JOHN CATTIER has been a director and shareholder of Unity since its
inception. Since May 1996, Mr. Cattier has been a director and shareholder of
Unity VCA. Mr. Cattier has been an independent consultant since January 1985.
From 1957 to December 1984, Mr. Cattier was associated with White Weld & Co.,
investment bankers, serving as a general partner, and with Credit Suisse White
Weld, which subsequently became Credit Suisse First Boston, investment bankers,
in various capacities. Mr. Cattier is a director of Pacific Assets Trust PLC, a
United Kingdom investment trust, and Vice Chairman of Laredo National
Bancshares, Inc. of Laredo, Texas, a one bank holding company. Mr. Cattier
received a B.A. from Yale University.

    BARRY RIDINGS has been a director of Unity since its inception. Since March
1990, Mr. Ridings has been a Managing Director of Alex. Brown & Sons, investment
bankers. From June 1986 to March 1990, Mr. Ridings was a Managing Director of
Drexel Burnham Lambert, investment bankers. Mr. Ridings is a director of
Transcor Waste Services Corp., a waste management company, Noodle Kidoodle,
Inc., an operator of specialty toy stores, New Valley Corp., formerly known as
Western

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<PAGE>
Union, Search Capital Group, an auto finance Company, Telemundo Group, a Spanish
language television network, and Norex Industries Inc., a shipping company. Mr.
Ridings received an M.B.A. from Cornell University.

    NORMAN LEBEN has been Secretary and a director of Unity since its inception.
Mr. Leben is, and since 1988 has been, a partner of Dalessio Miliner & Leben
("DML"), certified public accountants. Prior thereto and from 1985, Mr. Leben
was engaged in the acquisition, management, syndication and operation of real
estate and other emerging market businesses. Prior to 1985, Mr. Leben was
employed by Laventhol & Horwath. Mr. Leben received a B.B.A. from George
Washington University.

    All directors hold office until the next annual meeting of shareholders and
the election and qualification of their successors. Officers are elected
annually by the Unity board and serve at its discretion. Mr. Burstein devotes
approximately 30% of his time to the affairs of Unity. Unity has not entered
into employment agreements with either of its officers.

    EXECUTIVE COMPENSATION

    No executive officer has received any cash compensation from Unity since
inception for services rendered. Unity's officers receive no compensation for
serving as officers other than accountable reimbursement for any reasonable
business expenses incurred in connection with activities on behalf of Unity.

    See "Description of Unity's Securities--Directors' Warrants" for information
as to warrants to purchase in the aggregate up to 400,000 shares of Unity common
stock.

    DIRECTORS' COMPENSATION

    The directors of Unity have received no compensation for serving on the
Unity board other than reimbursement of reasonable expenses incurred in
attending meetings.

STOCK OPTION PLAN

    Unity's 1996 Stock Option Plan was adopted by both the Unity board and a
majority in interest of the Unity stockholders on May 30, 1996. The plan
provides for the granting of options which are intended to qualify either as
incentive stock options within the meaning of Section 422 of the Internal
Revenue Code of 1986 or as options which are not intended to meet the
requirements of such section ("nonstatutory stock options"). The total number of
shares of Unity common stock reserved for issuance under the plan is 187,500.
Options to purchase shares may be granted under the plan to persons who, in the
case of incentive stock options, are employees, including officers, of Unity,
or, in the case of nonstatutory stock options, are employees (including
officers) or non-employee directors of Unity.

    The plan provides for its administration by the Unity board or a committee
chosen by the Unity board, which has discretionary authority, subject to
restriction, to determine the number of shares issued pursuant to incentive
stock options and nonstatutory stock options and the individuals to whom, the
times at which and the exercise price for which options will be granted.

    The exercise price of all incentive stock options granted under the plan
must be at least equal to the fair market value of such shares on the date of
the grant or, in the case of incentive stock options granted to the holder of
more than 10% of Unity common stock, at least 110% of the fair market value of
such shares on the date of the grant. The maximum exercise period for which
incentive stock options may be granted is ten years from the date of grant or
five years in the case of an individual owning more than 10% of Unity common
stock. The aggregate fair market value of shares with respect to which incentive
stock options are exercisable for the first time by the holder of the option
during any calendar year shall not exceed $100,000. The aggregate fair market
value is determined at the date of the option grant.

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<PAGE>
    No options may be granted under the plan prior to the consummation of a
business combination.

    CERTAIN TRANSACTIONS

    In June 1996, Unity issued an aggregate of 625,000 shares of Unity common
stock at a price of $.0001 per share, as follows: 25,000 shares to Unity VCA,
150,000 shares to Mr. Burstein, 15,000 shares to Mr. Leben, an aggregate of
76,500 shares to Heptagon Investments Ltd. and its affiliate, 39,000 shares to
Cricket Services Ltd., 6,000 shares to Barry Ridings, and 313,500 shares to 24
other persons. Mr. Cattier is Chairman of Heptagon's board of directors and
exercises voting and dispositive control over approximately 7.6% of Heptagon's
shares of capital stock. Mr. Cattier disclaims any voting or dispositive power
over shares of Unity common stock held by Heptagon. Mr. Cattier exercises voting
and dispositive control over the shares of Unity common stock held by Cricket.
Both Heptagon and Cricket are private investment companies.

    In June 1996, Unity issued 58,334, 58,333, 58,333 and 25,000 Class A and
Class B warrants to each of, respectively, Messrs. Burstein, Leben, Cattier and
Ridings (collectively, the "directors' warrants"), in consideration for future
services to be rendered by such persons on behalf of Unity. The directors'
warrants are identical to Unity's Class A and Class B redeemable warrants
offered and sold in the IPO but are not redeemable by Unity and may not be
transferred until the completion of a merger with an operating business.

    Unity has been obligated to pay Unity VCA, since June 1, 1996, a monthly fee
of $7,500 for general and administrative services pursuant to an agreement which
may be canceled by either party upon 30 days' prior written notice. Such fee
includes the use of approximately 500 square feet of office space in premises
occupied by Unity VCA. DML, an accounting firm which is an affiliate of Mr.
Leben, affords Unity VCA the use of such space at a monthly rental of $2,000.
Messrs. Burstein, Cattier and Leben are each directors and stockholders of Unity
VCA. As of January 31, 1999, $76,282 of such fees were due and owing to Unity
VCA.

    Unity VCA had made non-interest demand loans aggregating approximately
$50,000 to Unity as of the IPO date to cover expenses incurred by Unity in
connection with the IPO. Unity repaid these loans out of the proceeds of the
IPO.

    DML has performed bookkeeping, tax and accounting services for some of the
"blank check" companies of which Messrs. Burstein, Cattier and Ridings have been
directors and shareholders from their dates of inception through the
consummation of their respective business combinations and performs similar
services for Unity at an aggregate cost of $15,570 and $14,275 for the years
ended July 31, 1998 and 1997, respectively.

AFTER THE MERGER

    Upon completion of the merger, the executive officers and directors of
GraphOn and other persons will become the executive officers and six of the
seven directors of Unity. See "Management of GraphOn-Board of Directors."

    Unity's proposed amended and restated certificate of incorporation requires
Unity to indemnify its directors to the fullest extent permitted by Delaware
law. GraphOn is entering into indemnification agreements with each of its
directors which agreements will be assumed by Unity. We believe that the
limitation of liability provisions in the certificate of incorporation and the
indemnification agreements may enhance our ability to attract and retain
qualified individuals to serve as directors.

                                       72
<PAGE>
                        PRINCIPAL STOCKHOLDERS OF UNITY

    The following table sets forth information known to Unity as of May 15, 1999
and as of such date, giving effect to the merger, based on information obtained
from the persons named below, with respect to the beneficial ownership of shares
of Unity common stock held by

    - each person known by Unity to be the owner 5% or more of the outstanding
      shares of Unity common stock;

    - each director of Unity; and

    - all executive officers and directors of Unity as a group.

<TABLE>
<CAPTION>
                                                              BENEFICIAL OWNERSHIP OF         BENEFICIAL OWNERSHIP OF
                                                                 UNITY COMMON STOCK              UNITY COMMON STOCK
                                                             PRIOR TO THE MERGER (1)(2)         AFTER THE MERGER(3)
                                                           ------------------------------  ------------------------------
<S>                                                        <C>                <C>          <C>                <C>
                                                           NUMBER OF SHARES     PERCENT    NUMBER OF SHARES     PERCENT
                                                           -----------------  -----------  -----------------  -----------

Lawrence Burstein........................................         175,000(4)         9.3%         291,668(6)         2.6%
  245 Fifth Avenue
  New York, NY 10016

John Cattier.............................................         140,500(4)(5)        7.5%        257,168(7)        2.3%
  Achlain Invermoriston
  Inverneshire,
  Scotland IV3 6YN
  United Kingdom

Barry Ridings............................................           6,000              *           56,000(8)           *
  Lilac Lane
  Princeton, NJ 08540

Norman Leben.............................................          40,000(4)         2.1%         156,600(9)         1.4%
  245 Fifth Avenue
  New York, NY 10016

James G. Dinan et al.....................................         322,375(10)       17.2%         322,375            2.9%
  350 Park Avenue
  New York, NY 10022

All executive officers and directors as a group (4
  persons)...............................................         311,500(4)(5)       16.6%        711,500(11)        6.3%
</TABLE>

- ------------------------

 *  Denotes less than 1% of outstanding Unity common stock.

(1) As used in this joint proxy statement/prospectus, beneficial ownership means
    the sole or shared power to vote, or direct the voting of, a security, or
    the sole or shared power to invest or dispose, or direct the investment or
    disposition, of a security. Except as otherwise indicated, all persons named
    in this joint proxy statement/prospectus have sole voting power and
    investment power with respect to their respective shares of Unity common
    stock, except to the extent that authority is shared by spouses under
    applicable law, and record and beneficial ownership with respect to their
    respective shares of Unity common stock. With respect to each shareholder,
    includes any shares issuable upon exercise of all options or warrants held
    by such shareholder that are currently exercisable or will become
    exercisable within 60 days of May 15, 1999.

(2) Does not include shares issuable upon exercise of the directors' warrants
    which are beneficially owned by each of the persons named in the above table
    but which are not exercisable until the consummation of a merger with an
    operating business.

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<PAGE>
(3) Assumes no cash conversions of Unity common stock by Unity stockholders or
    exercise by Unity stockholders and GraphOn shareholders of their respective
    appraisal rights.

(4) Includes 25,000 shares of Unity common stock owned by Unity VCA, over which
    shares Messrs. Burstein, Leben and Cattier share voting and investment
    power.

(5) Includes 75,000 shares held by Heptagon, 1,500 shares held by an affiliate
    of Heptagon and 39,000 shares held by Cricket. Mr. Cattier is Chairman of
    Heptagon's board of directors and exercises voting and dispositive control
    over approximately 7.6% of Heptagon's shares of capital stock. Mr. Cattier
    disclaims any voting or dispositive power of the shares of Unity common
    stock held by Heptagon.

(6) Includes 116,668 shares issuable upon exercise of directors' warrants.

(7) Includes 116,666 shares issuable upon exercise of directors' warrants.

(8) Includes 50,000 shares issuable upon exercise of directors' warrants.

(9) Includes 116,666 shares issuable upon exercise of directors' warrants.

(10) Represents shares held by a "group," within the meaning of Section 13(d)(3)
    of the Exchange Act, comprised of James G. Dinan, York Investment Limited,
    York Capital Management, L.P. and York Institutional Partners, L.P., as
    reflected in Schedule 13G, filed with the SEC on January 21, 1999.

(11) Includes 400,000 shares issuable upon exercise of directors' warrants.

    The shares of Unity common stock owned by the persons named above have been
placed in escrow with American Stock Transfer & Trust Company, as escrow agent,
until the earlier to occur of:

    - the consummation of the merger or

    - the mandatory liquidation of Unity pursuant to its certificate of
      incorporation due to the failure of Unity to effect a merger with an
      operating business. During the escrow period, such persons will not be
      able to sell or otherwise transfer their respective shares of Unity common
      stock, but will retain all other rights as stockholders of Unity,
      including, without limitation, the right to vote such shares.

    Messrs. Burstein, Cattier, Leben and Unity VCA may be deemed to be "parents"
and "promoters" of Unity, as such terms are defined under the Federal securities
laws.

                                       74
<PAGE>
                       DESCRIPTION OF UNITY'S SECURITIES

GENERAL

    Unity is authorized to issue 20,000,000 shares of Unity common stock, par
value $.0001 per share, and 5,000 shares of "blank check" preferred stock, par
value $.01 per share. As of May 15, 1999, 1,875,000 shares of Unity common stock
are outstanding, held of record by 37 persons. No shares of Unity preferred
stock currently are outstanding.

COMMON STOCK

    The holders of Unity common stock are entitled to one vote for each share
held of record on all matters to be voted on by shareholders. There is no
cumulative voting with respect to the election of directors, with the result
that the holders of more than 50% of the shares voted for the election of
directors can elect all of the directors. The holders of Unity common stock are
entitled to receive dividends when, as and if declared by the Unity board out of
funds legally available therefor. In the event of liquidation, dissolution or
winding up of Unity, the holders of Unity common stock, except for the
non-public Unity stockholders who have agreed to waive their rights to share in
any distribution upon their respective shares of Unity common stock relating to
a liquidation of Unity due to the failure of Unity to effect a business
combination, are entitled to share ratably in all assets remaining available for
distribution to them after payment of liabilities and after provision has been
made for each class of stock, if any, having preference over the Unity common
stock. Holders of shares of Unity common stock, as such, have no redemption,
preemptive or other subscription rights. Except as set forth under "The
Merger-Conversion Rights," there are no conversion provisions applicable to the
Unity common stock. All of the outstanding shares of Unity common stock are, and
the shares of Unity common stock issuable in the merger, when delivered in
accordance with the terms of the merger agreement, will be, fully paid and
nonassessable.

PREFERRED STOCK

    Unity's certificate of incorporation authorizes the issuance of 5,000 shares
of Unity preferred stock with such designation, rights and preferences as may be
determined from time to time by the Unity board. Accordingly, the Unity board is
empowered, without shareholder approval, to issue Unity preferred stock with
dividend, liquidation, conversion, voting or other rights which could adversely
affect the voting power or other rights of the holders of Unity common stock.
The Unity preferred stock could be utilized as a method of discouraging,
delaying or preventing a change in control of Unity subsequent to the effective
time. Although Unity does not currently intend to issue any shares of Unity
preferred stock, there can be no assurance that Unity will not do so subsequent
to the completion of the merger.

DIVIDENDS

    Unity does not presently intend to pay any cash dividends as all available
cash will be utilized to further the growth of Unity's business subsequent to
the effective time and for the proximate future thereafter. The payment of any
cash dividends will be in the discretion of the Unity board and will be
dependent upon Unity's results of operations, financial condition, contractual
restrictions and other factors deemed relevant by the Unity board.

TRANSFER AGENT

    The transfer agent for the Unity common stock is American Stock Transfer &
Trust Company, 40 Wall Street, New York, New York 10005.

                                       75
<PAGE>
IPO WARRANTS

    As of May 15, 1999, there were 1,250,000 Class A redeemable warrants and
1,250,000 Class B redeemable warrants (collectively, the "Unity IPO Warrants")
outstanding, held of record by seven and four persons, respectively.

    Each Class A redeemable warrant entitles the registered holder to purchase
one share of Unity common stock at a price of $5.50 per share, subject to
adjustment, for a period of five years commencing on the later of a merger with
an operating business or November 12, 1997. Each Class B redeemable warrant
entitles the registered holder to purchase one share of Unity common stock at a
price of $7.50 per share, subject to adjustment, for a period of five years
commencing on the later of a merger with an operating business or November 12,
1997. Unity may call the Class A redeemable warrants and the Class B redeemable
warrants for redemption, each as a class, in whole and not in part, at the
option of Unity, at a price of $.05 per IPO warrant at any time upon not less
than 30 days' prior written notice, provided that the reported high bid price of
Unity common stock equals or exceeds $8.50 per share with respect to the Class A
warrants, and $10.50 per share with respect to the Class B warrants, for the 20
consecutive trading days immediately prior to the notice of redemption to
warrantholders. The warrantholders shall have exercise rights until the close of
business on the date fixed for redemption.

    The Unity IPO warrants are issued in registered form under a warrant
agreement between Unity and American Stock Transfer & Trust Company, as warrant
agent.

    The exercise price and number of shares of Unity common stock issuable on
exercise of the Unity IPO warrants are subject to adjustment, including in the
event of a stock dividend, recapitalization, reorganization, merger or
consolidation of Unity. However, the Unity IPO warrants are not subject to
adjustment for issuances of Unity common stock at a price below their respective
exercise prices.

    Unity has the right, in its sole discretion, to decrease the exercise price
of the Unity IPO warrants for a period of not less than 30 days on not less than
30 days' prior written notice to the warrantholders. In addition, Unity has the
right, in its sole discretion, to extend the expiration date of the Unity IPO
warrants on five business days' prior written notice to the warrantholders.

    The Unity IPO warrants may be exercised upon surrender of the warrant
certificate on or prior to the expiration date at the offices of the warrant
agent, with the exercise form on the reverse side of the warrant certificate
completed and executed as indicated, accompanied by full payment of the exercise
price to the warrant agent for the number of Unity IPO warrants being exercised.
Payment of the exercise price is by certified check, payable to Unity. The
warrantholders do not have the rights or privileges of holders of Unity common
stock.

    No Unity IPO warrants will be exercisable unless at the time of exercise
Unity has filed with the SEC a current prospectus covering the shares of Unity
common stock issuable upon exercise of Unity IPO warrants and such shares have
been registered or qualified or deemed to be exempt under the securities laws of
the state of residence of the holder of such Unity IPO warrants. Unity will use
its best efforts to have all shares so registered or qualified on or before the
exercise date and to maintain a current prospectus relating thereto until the
expiration of the Unity IPO warrants, subject to the terms of the warrant
agreement. While it is Unity's intention to do so, there is no assurance that it
will be able to do so.

    No fractional shares will be issued upon exercise of the Unity IPO warrants.
However, if a warrantholder exercises all Unity IPO warrants then owned of
record by him, Unity will pay to such warrantholder, in lieu of the issuance of
any fractional share which otherwise is issuable to such warrantholder, an
amount in cash based on the market value of Unity common stock on the last
trading day prior to the exercise date.

                                       76
<PAGE>
    If the merger is consummated, Unity shall issue to Spencer Trask 250,000
Class A redeemable common stock purchase warrants exercisable for an aggregate
of up to 250,000 shares of Unity common stock at an exercise price of $5.50 per
share. The terms of the warrants are substantially the same as the terms of the
Class A redeemable warrants described above, except that the warrants will not
be redeemable until the reported high bid price of Unity common stock equals or
exceeds $15.00 per share for the 20 consecutive trading days immediately prior
to the notice of redemption to the warrantholders.

UNDERWRITERS' IPO SECURITIES

    In connection with the Unity IPO, Unity sold to GKN Securities Corp. and
Gaines, Berland Inc., the underwriters of the Unity IPO, for nominal
consideration, the right to purchase up to an aggregate of 125,000 units (the
"Underwriters' IPO Securities"). Each unit issuable upon exercise of the
Underwriters' IPO Securities consists of one share of Unity common stock, one
Class A warrant and one Class B warrant (the Class A warrants and the Class B
warrants are collectively referred to in this joint proxy statement/prospectus
as the "Warrants"). The Warrants are identical to the Unity IPO warrants
described above except that the Warrants cannot be redeemed. The Underwriters'
IPO Securities are exercisable initially at $6.60 per unit (the "Exercise
Price") for a period of five years commencing on November 12, 1996. The
Underwriters' IPO Securities contain anti-dilution provisions providing for
adjustment of the exercise price upon the occurrence of certain events including
the issuance of shares of Unity common stock or other securities convertible
into or exercisable for shares of Unity common stock at a price per share less
than the exercise price, or in the event of any recapitalization,
reclassification, stock dividend, stock split, stock combination or similar
transaction.

    Unity also agreed at the time of the issuance of the Underwriters' IPO
Securities to use its best efforts to maintain an effective registration
statement with respect to the Underwriters' IPO Securities and the underlying
units. In addition, the Underwriters' IPO Securities grant to the holders of the
securities "piggy back" and "demand" rights for periods of seven and five years,
respectively, from November 12, 1996 with respect to the registration under the
Securities Act of the securities directly and indirectly issuable upon exercise
of the Underwriters' IPO Securities.

DIRECTORS' WARRANTS

    In June 1996, Unity issued to each of Messrs. Burstein, Leben, Cattier and
Ridings 58,334, 58,333, 58,333 and 25,000 Class A, and the same number of Class
B, warrants, respectively, in consideration for future services to be rendered
by such persons on behalf of Unity. Such warrants are identical to the Class A
and Class B redeemable warrants but are not redeemable by Unity and may not be
exercised until the consummation of a business combination.

                                       77
<PAGE>
                    COMPARISON OF RIGHTS OF HOLDERS OF UNITY
                     COMMON STOCK AND GRAPHON COMMON STOCK

GENERAL

    If the merger agreement is approved and the merger becomes effective,
GraphOn shareholders will become Unity stockholders and their rights as
shareholders will be determined by the DGCL and Unity's Restated certificate of
incorporation ("certificate of incorporation") and bylaws ("the Unity Bylaws").
Differences between the DGCL and the CCC as well as those between the
certificate of incorporation and Bylaws of Unity and the Second Amended and
Restated Articles of Incorporation ("Articles of Incorporation") and the amended
and restated bylaws ("the GraphOn Bylaws") of GraphOn, are summarized below.
This summary is not intended to be complete and is qualified in its entirety by
reference to the DGCL, the CCC, and the certificate of incorporation and Unity
Bylaws and the Articles of Incorporation and GraphOn Bylaws.

    SIZE OF THE BOARD OF DIRECTORS.  Under California law, the number of
directors of a corporation may be fixed in the articles of incorporation or
bylaws of a corporation, or a range may be established for the number of
directors, with the board of directors given authority to fix the exact number
of directors within such range. The GraphOn Bylaws establish a range of five to
seven for the number of directors of GraphOn with the exact number currently set
at six. The provision setting forth the number of directors in the GraphOn
Bylaws may not be amended to reduce the minimum number of directors below five
if the votes cast against the adoption of such amendment at a meeting, or the
shares not consenting in the case of action by written consent, are equal to
more than 16 2/3% of the outstanding shares entitled to vote.

    Under Delaware law, the number of directors of a corporation, or the range
of authorized directors, may be fixed or changed by the board of directors
acting alone, by amendment to the corporation's bylaws, unless the directors are
not authorized to amend the bylaws or the number of directors is fixed in the
certificate of incorporation, in which cases shareholder approval is required.
The Unity Bylaws establish a range of one to seven for the number of directors
of Unity, with the exact number currently set at four, and Unity's certificate
of incorporation authorizes the Unity board to make, alter, amend or repeal the
Unity Bylaws. Accordingly, a majority of Unity's board of directors will have
the power to change the authorized number of directors. The GraphOn board does
not have this power under California law.

    CUMULATIVE VOTING.  Under California law, if any shareholder has given
notice of his or her intention to cumulate votes for the election of directors,
any other shareholder of the corporation also is entitled to cumulate his or her
votes at such election. Cumulative voting is not available under Delaware law
unless specifically provided for in a corporation's certificate of incorporation
The Unity certificate of incorporation does not provide for cumulative voting
and, therefore, the shareholders of GraphOn will no longer have cumulative
voting rights. The elimination of cumulative voting would limit the ability of
minority shareholders to obtain representation on a corporation's board of
directors.

    CLASSIFIED BOARD OF DIRECTORS. A classified board is one on which a certain
number, but not all, of the directors are elected on a rotating basis each year.
Under California law, directors generally are elected annually. Delaware law
permits, but does not require, a classified board of directors, with staggered
terms under which one-half or one-third of the directors are elected for terms
of two or three years, respectively. This method of electing directors makes a
change in the composition of the board of directors, and a potential change in
control of a corporation, a lengthier and more difficult process. Unity's
proposed amended and restated certificate of incorporation provides for a
classified board of directors.

    WRITTEN CONSENT OF SHAREHOLDERS.  Both the CCC and the DGCL provide that the
shareholders of a corporation may take action by written consent without a
meeting, unless the corporation's charter

                                       78
<PAGE>
documents provide otherwise. The proposed certificate of incorporation of Unity
contains a provision prohibiting actions by written consent and, accordingly,
proposals for stockholder action such as proposed amendments to the bylaws or
removal of directors could be delayed until the next meeting of stockholders.

    POWER TO CALL SPECIAL SHAREHOLDERS' MEETINGS.  Under California law, a
special meeting of shareholders may be called by the board of directors, the
chairman of the board, the president, the holders of shares entitled to cast not
less than 10% of the votes at such meeting and such additional persons as are
authorized by the articles of incorporation or the bylaws. Under Delaware law, a
special meeting of shareholders may be called by the board of directors or by
any other person authorized to do so in the certificate of incorporation or the
bylaws. The proposed amended and restated certificate of incorporation of Unity
allows the board or the holders of at least 50% of the outstanding stock of
Unity to call special meetings of the stockholders. This might delay stockholder
proposals until the next annual meeting of stockholders.

    SHAREHOLDER APPROVAL OF BUSINESS COMBINATIONS.  In the last several years, a
number of states, but not California, have adopted special laws designed to
subject to shareholder approval certain kinds of "unfriendly" corporate
takeovers, or other transactions involving a corporation and one or more of its
significant shareholders. Under Section 203 of the DGCL, "business combinations"
with "interested shareholders" of Delaware corporations are subject to a
three-year moratorium unless specified conditions are met. With exceptions, an
interested shareholder is a person or group who or which owns 15% or more of the
corporation's outstanding voting stock, or is an affiliate or associate of the
corporation and was the owner of 15% or more of such voting stock at any time
within the previous three years. Such voting stock includes any rights to
acquire stock pursuant to an option, warrant, agreement, arrangement or
understanding, or upon the exercise of conversion or exchange rights, and stock
with respect to which the person has voting rights only.

    For purposes of Section 203, the term "business combination" is defined
broadly to include:

    - mergers with or caused by the interested shareholder,

    - sales or other dispositions to the interested shareholder, except
      proportionately with the corporation's other shareholders, of assets of
      the corporation or a subsidiary equal to 10% or more of the aggregate
      market value of the corporation's consolidated assets or its outstanding
      stock,

    - the issuance or transfer by the corporation or a subsidiary of stock of
      the corporation or such subsidiary to the interested shareholder, except
      for transfers in a conversion or exchange or a pro rata distribution or
      other transactions, none of which increase the interested shareholder's
      proportionate ownership of any class or series of the corporation's or
      such subsidiary's stock or

    - receipt by the interested shareholder except proportionately as a
      shareholder, directly or indirectly, of any loans, advances, guarantees,
      pledges or other financial benefits provided by or through the corporation
      or a subsidiary.

    The three-year moratorium imposed on business combinations by Section 203
does not apply if:

    - prior to the date on which such shareholder becomes an interested
      shareholder the board of directors approves either the business
      combination or the transaction which resulted in the person becoming an
      interested shareholder;

    - the interested shareholder owns 85% of the corporation's voting stock upon
      consummation of the transaction which made him or her an interested
      shareholder, excluding from the 85% calculation shares owned by directors
      who are also officers of the target corporation and shares held by
      employee stock plans which do not permit employees to decide
      confidentially whether to accept a tender or exchange offer; or

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    - on or after the date such person becomes an interested shareholder, the
      board approves the business combination and it also is approved at a
      shareholder meeting by 66 2/3% of the voting stock not owned by the
      interested shareholder.

    Section 203 only applies to Delaware corporations which have a class of
voting stock that is listed on a national securities exchange, such as the
Nasdaq National Market or are held of record by more than 2,000 shareholders.
However, a Delaware corporation may elect not to be governed by Section 203 by a
provision in its original certificate of incorporation or an amendment thereto
or to the bylaws, which amendment must be approved by majority shareholder vote
and may not be further amended by the board of directors. Unity is not currently
subject to Section 203.

    REMOVAL OF DIRECTORS.  Under California law, any director or the entire
board of directors may be removed, with or without cause, with the approval of a
majority of the outstanding shares entitled to vote; however, no individual
director may be removed unless the entire board is removed if the number of
votes cast against such removal would be sufficient to elect the director under
cumulative voting. Under Delaware law, a director of a corporation that does not
have a classified board of directors or cumulative voting may be removed with or
without cause with the approval of a majority of the outstanding shares entitled
to vote. In the case of a Delaware corporation having cumulative voting, if less
than the entire board is to be removed, a director may not be removed without
cause unless the number of shares voted against such removal would not be
sufficient to elect the director under cumulative voting. A director of a
corporation with a classified board of directors may be removed only for cause,
unless the certificate of incorporation otherwise provides.

    The proposed amended and restated certificate of incorporation provides for
removal of directors only by 66 2/3% of the Unity directors

    FILLING VACANCIES ON THE BOARD OF DIRECTORS.  Under California law, any
vacancy on the board of directors other than one created by removal of a
director may be filled by the board. If the number of directors is less than a
quorum, a vacancy may be filled by the unanimous written consent of the
directors then in office by the affirmative vote of a majority of the directors
at a meeting held pursuant to notice or waivers of notice or by a sole remaining
director. A vacancy created by removal of a director may be filled by the board
only if so authorized by a corporation's articles of incorporation or by a bylaw
approved by the corporation's shareholders. Under Delaware law, vacancies and
newly created directorships may be filled by a majority of the directors then in
office, even though less than a quorum, unless otherwise provided in the
certificate of incorporation or bylaws and unless the certificate of
incorporation directs that a particular class is to elect such director, in
which case any other directors elected by such class, or a sole remaining
director, shall fill such vacancy.

    LOANS TO OFFICERS AND EMPLOYEES.  Under California law, any loan or guaranty
to or for the benefit of a director or officer of the corporation or its parent
requires approval of the shareholders unless such loan or guaranty is provided
under a plan approved by shareholders owning a majority of the outstanding
shares of the corporation. In addition, under California law, shareholders of
any corporation with 100 or more shareholders of record may approve a bylaw
authorizing the board of directors alone to approve loans or guaranties to or on
behalf of officers, whether or not such officers are directors, if the board
determines that any such loan or guaranty may reasonably be expected to benefit
the corporation. Under Delaware law, a corporation may make loans to, guarantee
the obligations of or otherwise assist its officers or other employees and those
of its subsidiaries, including directors who are also officers or employees,
when such action, in the judgment of the directors, may reasonably be expected
to benefit the corporation.

    INDEMNIFICATION AND LIMITATION OF LIABILITY.  California and Delaware have
similar laws respecting indemnification by a corporation of its officers,
directors, employees and other agents. The laws of both states also permit
corporations to adopt a provision in their articles of incorporation eliminating
the

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liability of a director to the corporation or its shareholders for monetary
damages for breach of the director's fiduciary duty of care. There are
differences between the laws of the two states respecting indemnification and
limitation of liability.

    The Articles of Incorporation of GraphOn eliminate the liability of
directors to GraphOn to the fullest extent permissible under California law.
California law does not permit the elimination of monetary liability where such
liability is based on:

    - intentional misconduct or knowing and culpable violation of law;

    - acts or omissions that a director believes to be contrary to the best
      interest of the corporation or its shareholders, or that involve the
      absence of good faith on the part of the director;

    - receipt of an improper personal benefit;

    - acts or omissions that show reckless disregard for the director's duty to
      the corporation or its shareholders where the director in the ordinary
      course of performing a director's duties should be aware of risks of
      serious injury to the corporation or its shareholders;

    - acts or omissions that constitute an unexcused pattern of inattention that
      amounts to an abdication of the director's duty to the corporation and its
      shareholders;

    - interested transactions between the corporation and a director in which a
      director has a material financial interest; and

    - liability for improper distributions, loans or guarantees.

    The certificate of incorporation of Unity also eliminates the liability of
directors to the fullest extent permissible under Delaware law, as such law
exists currently or as it may be amended in the future. Under Delaware law, such
provision may not eliminate or limit director monetary liability for:

    - breaches of the director's duty of loyalty to the corporation or its
      shareholders;

    - acts or omissions not in good faith or involving intentional misconduct or
      knowing violations of law;

    - the payment of unlawful dividends or unlawful stock repurchases or
      redemptions; or

    - transactions in which the director received an improper personal benefit.

    Such limitation of liability provision also may not limit a director's
liability for violation of, or otherwise relieve Unity or its directors from the
necessity of complying with, federal or state securities laws, or affect the
availability of non-monetary remedies such as injunctive relief or rescission.

    California law permits indemnification of expenses incurred in derivative or
third-party actions, except that with respect to derivative actions:

    - no indemnification may be made without court approval when a person is
      adjudged liable to the corporation in the performance of that person's
      duty to the corporation and its shareholders, unless a court determines
      such person is entitled to indemnity for expenses, and then such
      indemnification may be made only to the extent that such court shall
      determine; and

    - no indemnification may be made without court approval in respect of
      amounts paid or expenses incurred in settling or otherwise disposing of a
      threatened or pending action or amounts incurred in defending a pending
      action which is settled or otherwise disposed of without court approval.

    Delaware allows indemnification of such expenses without court approval.

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    Delaware law generally permits indemnification of expenses incurred in the
defense or settlement of a derivative or third-party action, provided there is a
determination by a disinterested quorum of the directors, by independent legal
counsel or by a majority vote of a quorum of the shareholders that the person
seeking indemnification acted in good faith and in a manner reasonably believed
to be in or, in contrast to California law, not opposed to the best interests of
the corporation. Without court approval, however, no indemnification may be made
in respect of any derivative action in which such person is adjudged liable for
negligence or misconduct in the performance of his or her duty to the
corporation. Delaware law requires indemnification of expenses when the
individual being indemnified has successfully defended the action on the merits
or otherwise.

    Indemnification is permitted by California law only for acts taken in good
faith and believed to be in the best interests of the corporation and its
shareholders, as determined by a majority vote of a disinterested quorum of the
directors, independent legal counsel, if a quorum of independent directors is
not obtainable, a majority vote of a quorum of the shareholders excluding shares
owned by the indemnified party, or the court handling the action. California law
requires indemnification when the individual successfully has defended the
action on the merits as opposed to Delaware law which requires indemnification
relating to a successful defense on the merits or otherwise.

    California corporations may include in their articles of incorporation a
provision which extends the scope of indemnification through agreements, bylaws
or other corporate action beyond that specifically authorized by statute.

    Delaware law states that the indemnification provided by statute shall not
be deemed exclusive of any other rights under any bylaw, agreement, vote of
shareholders or disinterested directors or otherwise. Under Delaware law,
therefore, any indemnification agreements entered into by GraphOn with its
officers and directors may be assumed by Unity upon completion of the merger.

    Currently, there are no actions pending against any officers of GraphOn in
their capacities as such.

    INSPECTIONS OF SHAREHOLDERS LIST.  Both California and Delaware law allow
any shareholder to inspect the shareholders list for a purpose reasonably
related to such person's interest as a shareholder. California law provides, in
addition, for an absolute right to inspect and copy the corporation's
shareholder list by persons holding an aggregate of 5% or more of a
corporation's voting shares, or shareholders holding an aggregate of 1% or more
of such shares who have filed a Schedule 14B with the SEC relating to the
election of directors. Delaware law does not provide for any such absolute right
of inspection, and no such right is granted under the certificate of
incorporation or Bylaws of Unity. Lack of access to shareholder records, even
though unrelated to the shareholder's interest as a shareholder, could result in
impairment of the shareholder's ability to coordinate opposition to management
proposals, including proposals with respect to a change in control of Unity.

    DIVIDENDS AND REPURCHASES OF SHARES.  California law dispenses with the
concepts of par value of shares as well as statutory definitions of capital,
surplus and the like. The concepts of par value, capital and surplus are
retained under Delaware law.

    Under California law, a corporation may not make any distribution, including
dividends, whether in cash or other property, and repurchases of its shares,
unless either the corporation's retained earnings immediately prior to the
proposed distribution equal or exceed the amount of the proposed distribution
or, immediately after giving effect to such distribution, the corporation's
assets, exclusive of goodwill, capitalized research and development expenses and
deferred charges, would be at least equal to 1.25 times its liabilities, not
including deferred taxes, deferred income and other deferred credits, and the
corporation's current assets would be at least equal to its current liabilities
or 1.25 times its current liabilities if the average pre-tax and pre-interest
expense earnings for the preceding two fiscal years were less than the average
interest expense for such years. Such tests are applied to California
corporations on a consolidated basis.

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    Delaware law permits a corporation to declare and pay dividends out of
surplus or, if there is no surplus, out of net profits for the fiscal year in
which the dividend is declared and/or for the preceding fiscal year as long as
the amount of capital of the corporation following the declaration and payment
of the dividend is not less than the aggregate amount of the capital of the
corporation represented by the issued and outstanding stock of all classes
having a preference upon the distribution of assets. In addition, Delaware law
generally provides that a corporation may redeem or repurchase its shares only
if such redemption or repurchase would not impair the capital of the
corporation.

    SHAREHOLDER VOTING.  Both California and Delaware law generally require that
a majority of the shareholders of both acquiring and target corporations approve
statutory mergers. Unless the corporation provides otherwise in its certificate
of incorporation, Delaware law does not require a shareholder vote of the
surviving corporation in a merger if:

    - the merger agreement does not amend the existing certificate of
      incorporation;

    - each share of the surviving corporation outstanding before the merger is
      an identical outstanding or treasury share after the merger; and

    - the number of shares to be issued by the surviving corporation in the
      merger does not exceed 20% of the shares outstanding immediately prior to
      the merger.

    California law contains a similar exception to its voting requirements for
reorganizations where shareholders or the corporation itself, or both,
immediately prior to the reorganization will own immediately after the
reorganization equity securities constituting more than five-sixths of the
voting power of the surviving or acquiring corporation or its entity.

    Both California and Delaware law also require that a sale of all or
substantially all of the assets of the corporation be approved by a majority of
the voting shares of the corporation transferring such assets.

    With exception, California law also requires that mergers, reorganizations
and similar transactions be approved by a majority vote of each class of shares
outstanding. In contrast, Delaware law generally does not require class voting,
except in transactions involving an amendment to the certificate of
incorporation which adversely affects a specific class of shares. Should Unity
authorize and issue shares of a new class of capital stock, the holders of such
shares would vote with the holders of the Unity common stock on proposals not
adversely affecting the Unity common stock. In such event the holders of Unity
common stock, if in the minority, would be unable to control the outcome of a
vote and, if in the majority, would be able to control the outcome of such a
vote.

    California law also requires that holders of non-redeemable common stock
receive non-redeemable common stock in a merger of the corporation with the
holders of more than 50% but less than 90% of such common stock or its affiliate
unless all of the holders of such common stock consent to the transaction. This
provision of California law may have the effect of making a "cash-out" merger by
a majority shareholder more difficult to accomplish. Although Delaware law does
not parallel California law in this respect, under some circumstances Section
203 of the DGCL does provide similar protection against coercive two-tiered bids
for a corporation in which the shareholders are not treated equally.

    California law also provides that, circumstances when a tender offer or a
proposal for a reorganization or for a sale of assets is made by an interested
party, which is generally a controlling or managing party of the target
corporation, an affirmative opinion in writing as to the fairness of the
consideration to be paid to the shareholders must be delivered to shareholders.
This fairness opinion requirement does not apply to a corporation which does not
have shares held of record by at least 100 persons, or to a transaction which
has been qualified under California state securities laws. Furthermore, if a
tender of shares or vote is sought pursuant to an interested party's proposal
and a later proposal is made by another party at least ten days prior to the
date of acceptance of the interested

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party proposal, the shareholders must be informed of the later offer and be
afforded a reasonable opportunity to withdraw any vote, consent or proxy, or to
withdraw any tendered shares. Delaware law has no comparable provision, and the
shareholders of GraphOn might, therefore, be deprived of an opportunity to
consider such other proposal.

    AMENDMENT OF BYLAWS.  Under California law, bylaws may be amended by
shareholders holding a majority of the outstanding shares, or by the board,
except that if the number or a range of directors are specified in the bylaws,
this provision can be changed only with the approval of the shareholders.
Shareholders can adopt or amend bylaw provisions to limit the ability of the
board to amend the bylaws. Under Delaware law, the bylaws may be amended only by
the shareholders, unless the corporation's certificate of incorporation confers
the power to amend the bylaws on the directors also. The proposed amended and
restated certificate of incorporation of Unity provides that the bylaws may be
amended only by the Unity board or the holders of at least 66 2/3% of the
outstanding stock.

    AMENDMENT OF CERTIFICATE OR ARTICLES OF INCORPORATION.  Under both Delaware
and California law, amendments to a corporation's certificate or articles of
incorporation must be approved by a corporation's board of directors and by a
majority of the shareholders. In addition, under both Delaware and California
law, if a corporation has more than one class or series of stock outstanding,
amendments that would affect the rights of such class or series require the vote
of a majority of the shares of such class or series. "Supermajority"
requirements, which are requirements of a vote of more than a majority of the
shares, are permitted under both California and Delaware law. However,
California law provides that, for a corporation with outstanding shares held of
record by 100 or more persons, such provision:

    - cannot require a vote higher than 66 2/3%;

    - must be approved by at least as large a proportion of the outstanding
      shares as the supermajority provision requires; and

    - automatically expires after two years unless renewed pursuant to a
      shareholder vote.

    The proposed amended and restated certificate of incorporation of Unity
provides that it may be amended only with the approval of 66 2/3% of the Unity
stockholders.

    INTERESTED DIRECTOR TRANSACTIONS.  Under both California and Delaware law,
contracts or transactions in which one or more of a corporation's directors has
an interest are not void or voidable because of such interest provided that
conditions, such as obtaining the required approval and fulfilling the
requirements of good faith and full disclosure, are met. With exceptions, the
conditions are similar under California and Delaware law. Under California and
Delaware law:

    - either the shareholders or the board of directors must approve any such
      contract or transaction after full disclosure of the material facts, and
      in the case of board approval, the contract or transaction must also be
      "just and reasonable" in California or "fair" in Delaware to the
      corporation; or

    - the contract or transaction must have been just and reasonable or fair as
      to the corporation at the time it was approved.

    In the latter case, California law explicitly places the burden of proof on
the interested director. Under California law, if shareholder approval is
sought, the interested director is not entitled to vote his shares at a
shareholder meeting with respect to any action regarding such contract or
transaction. If board approval is sought, the contract or transaction must be
approved by a majority vote of a quorum of the directors, without counting the
vote of any interested directors, except that interested directors may be
counted for purposes of establishing a quorum. Under Delaware law, if board
approval is

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sought, the contract or transaction must be approved by a majority of the
disinterested directors, even though less than a majority of a quorum.

    SHAREHOLDER DERIVATIVE SUITS.  California law provides that a shareholder
bringing a derivative action on behalf of a corporation have been a shareholder
at the time of the transaction in question, provided that appropriate tests are
met. Under Delaware law, a shareholder only may bring a derivative action on
behalf of the corporation if the shareholder was a shareholder of the
corporation at the time of the transaction in question or his or her stock
thereafter devolved upon him or her by operation of law. California law also
provides that the corporation or the defendant in a derivative suit may make a
motion to the court for an order requiring the plaintiff shareholder to furnish
a security bond. Delaware does not have a similar bonding requirement.

    APPRAISAL RIGHTS.  Under both California and Delaware law, a shareholder of
a corporation participating in major corporate transactions may, under varying
circumstances, be entitled to appraisal rights pursuant to which such
shareholder may receive cash in the amount of the "fair value" (Delaware) or
"fair market value" (California) of his or her shares, as determined by a court,
in lieu of the consideration he or she would otherwise receive in the
transaction. Under Delaware law, such appraisal rights are not available:

    - with respect to the sale, lease or exchange of all or substantially all of
      the assets of a corporation;

    - with respect to a merger or consolidation by a corporation the shares of
      which either are listed on a national securities exchange or are held of
      record by more than 2,000 holders if such shareholders receive only shares
      of the surviving corporation or shares of any other corporation which
      either are listed on a national securities exchange or held of record by
      more than 2,000 holders, plus cash in lieu of fractional shares; or

    - to shareholders of a corporation surviving a merger if no vote of the
      shareholders of the surviving corporation is required to approve the
      merger because the merger agreement does not amend the existing
      certificate of incorporation, each share of the surviving corporation
      outstanding prior to the merger is an identical outstanding or treasury
      share after the merger, and the number of shares to be issued in the
      merger does not exceed 20% of the shares of the surviving corporation
      outstanding immediately prior to the merger and if other conditions are
      met.

    The limitations on the availability of appraisal rights under California law
are different from those under Delaware law. Shareholders of a California
corporation whose shares are listed on a national securities exchange or on a
list of over-the-counter margin stocks issued by the Board of Governors of the
Federal Reserve System generally do not have such appraisal rights unless the
holders of at least 5% of the class of outstanding shares claim the right or the
corporation or any law restricts the transfer of such shares. California law
also generally affords appraisal rights in sale of asset reorganizations.
Appraisal rights are unavailable, however, if the shareholders of a corporation
or the corporation itself, or both, immediately prior to the reorganization will
own immediately after the reorganization equity securities constituting more
than five-sixths of the voting power of the surviving or acquiring corporation
or its parent entity.

    DISSOLUTION.  Under California law, shareholders holding 50% or more of the
total voting power may authorize a corporation's dissolution, with or without
the approval of the corporation's board of directors, and this right may not be
modified by the articles of incorporation. Under Delaware law, unless the board
of directors approves the proposal to dissolve, in which case a simple majority
may approve the dissolution, the dissolution must be approved by shareholders
holding 100% of the total voting power of the corporation. In the event of such
a board-initiated dissolution, Delaware law allows a Delaware corporation to
include in its certificate of incorporation a supermajority voting requirement
in connection with dissolutions.

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APPLICATION OF THE GENERAL CORPORATION LAW OF CALIFORNIA TO DELAWARE
  CORPORATIONS

    Under Section 2115 of the California General Corporation Law, foreign
corporations, which are corporations not organized under California law, are
placed in a special category if they have characteristics of ownership and
operation which indicate that they have significant contacts with California. So
long as a Delaware or other foreign corporation is in this special category, and
it does not qualify for one of the statutory exemptions, it is subject to a
number of key provisions of the California General Corporation Law applicable to
corporations incorporated in California. Among the more important provisions are
those relating to the election and removal of directors, cumulative voting,
classified boards of directors, standards of liability and indemnification of
directors, distributions, dividends and repurchases of shares, shareholder
meetings, approval of corporate transactions, dissenters and appraisal rights
and inspection of corporate records. See "Comparison of Rights of Holders of
Unity common stock and GraphOn common stock," above.

COMPARISON OF PROPOSED AMENDED AND RESTATED CERTIFICATE OF INCORPORATION AND
  BYLAWS OF UNITY AND ARTICLES OF INCORPORATION AND BYLAWS OF GRAPHON

    AUTHORIZED SHARES OF CAPITAL STOCK

    The GraphOn Articles of Incorporation authorize the issuance of 50,000,000
shares of GraphOn common stock, 17,300,755 shares of which were issued and
outstanding as of the GraphOn record date, and 5,000,000 shares of preferred
stock, none of which were issued on the GraphOn record date.

    The Unity amended and restated certificate of incorporation authorizes the
issuance of 45,000,000 shares of Unity common stock, 1,875,000 shares of which
were issued and outstanding as of the Unity record date, and 5,000,000 shares of
preferred stock, none of which were issued on the Unity record date.

    MEETINGS

    Pursuant to the GraphOn Bylaws, annual meetings of GraphOn shareholders
shall be held at such time as the GraphOn board may determine. At each annual
meeting, the GraphOn shareholders entitled to vote shall elect a board of
directors, and they may transact such other corporate business as may properly
be brought before the meeting. Special meetings of GraphOn shareholders may be
called for any purpose by the GraphOn board, the Chairman of the Board, the
President or by one or more shareholders holding not less than 10% of the voting
power of GraphOn. Written notice of any meeting of GraphOn shareholders shall be
mailed not less than ten nor more than 60 days before such meeting to each
GraphOn shareholder entitled to vote thereat.

    Special meetings of the GraphOn board may be called by the Chairman of the
Board, the President, any Vice President, the Secretary or any two directors on
at least 48-hours' notice to each director if delivered personally or by
telephone, telegraph, facsimile, electronic mail or other electronic means or on
at least 4-days' notice to each director if delivered by first-class mail.

    Pursuant to the Unity Amended and Restated Bylaws, annual meetings of Unity
stockholders for the election of directors and for such other business as may be
stated in the notice of the meeting shall be held at such date as the Unity
board shall determine and as set forth in the notice of the meeting. At each
annual meeting, the Unity stockholders entitled to vote shall elect a class of
the board of directors and they may transact such other corporate business as
shall be stated in the notice of the meeting. Special meetings of Unity
stockholders may be called for any purpose by the President or Secretary by
resolution of the directors, or by a notice signed by the registered holders of
no less than 50% of Unity's then issued and outstanding capital stock. Written
notice shall be given to each Unity stockholder entitled to vote thereat not
less than ten nor more than 60 days before the date of the meeting.

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    Special meetings of the Unity board may be called by the President or the
Secretary on the written request of a majority of the board of directors or by
the President on at least two days' notice to each director.

    DIRECTORS AND OFFICERS

    Pursuant to the GraphOn Bylaws, the GraphOn board may fix the number of
directors, but such number may not be less than five nor more than seven
persons. The GraphOn board has currently fixed the number of directors at six.
The officers of GraphOn shall be a Chairman of the Board, a President, one or
more Vice Presidents, a Secretary and a Chief Financial Officer and there may be
such other officers as may be deemed expedient for the proper conduct of the
business of GraphOn.

    Pursuant to the Unity amended and restated Bylaws, the number of directors
comprising the Unity board shall be determined by resolution of the board. The
Unity board has currently fixed the number of directors at four, but the board
of the combined company will be set at seven. The officers of Unity shall be a
President, a Chief Financial Officer and a Secretary. In addition, the Unity
board may elect a Chairman, one or more Vice Presidents and such Assistant
Secretaries and Assistant Treasurers as they may deem proper.

                                 LEGAL MATTERS

    Matters relating to the legality of the shares of Unity common stock offered
by this joint proxy statement/prospectus are being passed upon by Cooperman
Levitt Winikoff Lester & Newman, P.C., 800 Third Avenue, New York, New York
10022. Members of such firm own less than 1% of the shares of Unity common
stock.

                                    EXPERTS

    The financial statements of Unity as of July 31, 1998 and 1997, and for the
years ended July 31, 1998 and 1997, for the period from inception (May 30, 1996)
to July 31, 1996 and for the period from inception (May 30, 1996) to July 31,
1998 included in this joint proxy statement/prospectus have been audited by
Arthur Andersen LLP, independent public accountants, as indicated in their
reports with respect thereto and are included in this joint proxy
statement/prospectus in reliance upon the authority of said firm as experts in
giving said report.

    The financial statements of GraphOn as of December 31, 1998, 1997 and for
the years ended December 31, 1998, 1997 and 1996 and related schedules included
in this joint proxy statement/prospectus have been audited by BDO Seidman, LLP,
independent certified public accountants, to the extent and for the periods set
forth in their reports appearing elsewhere herein and in this joint proxy
statement/prospectus, and are included in reliance upon such reports given upon
the authority of said firm as experts in auditing and accounting.

    The statements in this joint proxy statement/prospectus under the captions
"Joint Proxy Statement/ Prospectus - Summary - Tax Consequences of the Merger"
and "The Merger - Tax Consequences of the Merger" have been reviewed by
Cooperman Levitt Winikoff Lester & Newman, P.C., counsel for Unity, and by
Brobeck, Phleger & Harrison LLP, counsel for GraphOn, as experts on such
matters, and, based upon that review, such statements are included in this joint
proxy statement/prospectus.

                      WHERE YOU CAN FIND MORE INFORMATION

    Unity files annual, quarterly and current reports, proxy statements and
other information with the SEC. You may read and copy any reports, statements or
other information on file at the SEC's public reference rooms in Washington,
D.C., New York, New York and Chicago, Illinois. Please call the SEC at (800)
SEC-0330 for further information on the public reference rooms. Unity's public
filings also are

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available to the public from commercial document retrieval services and at the
Internet site maintained by the SEC at "http://www.sec.gov." Reports, proxy
statements and other information concerning Unity also may be inspected at the
offices of The Nasdaq Stock Market, 9801 Washingtonian Boulevard, Rockville,
Maryland 20878.

    Unity has filed with the SEC a registration statement on Form S-4 to
register the shares of Unity common stock to be issued or issuable to GraphOn's
shareholders in connection with the merger. This joint proxy
statement/prospectus is a part of that registration statement and constitutes a
prospectus of Unity as well as a proxy statement of Unity and GraphOn for the
meetings.

    Although this joint proxy statement/prospectus contains all material
information that you can find in the registration statement, parts of the
registration statement have been omitted from this joint proxy
statement/prospectus as permitted by the rules and regulations of the SEC.
Copies of the registration statement, including the exhibits to the registration
statement and other material that is not included in this joint proxy
statement/prospectus, may be inspected, without charge, at the offices of the
SEC referred to above, or obtained at prescribed rates from the public reference
section of the SEC at the address set forth above.

    GraphOn has supplied all information contained in this joint proxy
statement/prospectus relating to GraphOn, and Unity has supplied all information
contained in this joint proxy statement/prospectus relating to Unity.

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                         INDEX TO FINANCIAL STATEMENTS

GRAPHON CORPORATION

<TABLE>
<S>                                                                                    <C>
  Independent Auditors' Report.......................................................        F-2

  Financial Statements
  Balance Sheets as of March 31, 1999 (Unaudited) and December 31, 1998 and 1997.....        F-3
  Statements of Operations and Comprehensive Income as of March 31, 1999 and March
    31, 1998 (Unaudited) and December 31, 1998 and 1997..............................        F-4
  Statements of Stockholders' Equity for the years ended December 31, 1998, 1997 and
    1996 and for the three months ended March 31, 1999 (Unaudited)...................        F-5
  Statements of Cash Flows as of March 31, 1999 and March 31, 1998 (Unaudited) and
    December 31, 1998 and 1997.......................................................        F-6
  Summary of Accounting Policies.....................................................        F-7
  Notes to Financial Statements......................................................       F-10

UNITY FIRST ACQUISITION CORP.
  Report of Independent Public Accountants...........................................       F-20
  Balance Sheets as of July 31, 1998 and 1997........................................       F-21
  Statements of Operations for the years ended July 31, 1998 and 1997, for the period
    from inception (May 30, 1996) to July 31, 1996, and for the period from inception
    (May 30, 1996) to July 31, 1998..................................................       F-22
  Statements of Cash Flows for the years ended July 31, 1998 and 1997, for the period
    from inception (May 30, 1996) to July 31, 1996, and for the period from inception
    (May 30, 1996) to July 31, 1998..................................................       F-23
  Statement of Changes in Stockholders' Equity (Deficit) for the period from
    inception (May 30, 1996) through July 31, 1996 and for the years ended July 31,
    1998 and 1997....................................................................       F-24
  Notes to Financial Statements......................................................       F-25
  Balance Sheets as of January 31, 1999 (unaudited) and July 31, 1998................       F-30
  Statements of Operations for the six months ended January 31, 1999 and 1998, for
    the three months ended January 31, 1999 and 1998, and for the period from
    inception (May 30, 1996) to January 31, 1999 (unaudited).........................       F-31
  Statements of Cash Flows for the six months ended January 31, 1999 and 1998 and for
    the period from inception (May 30, 1996) to January 31, 1999 (unaudited).........       F-32
  Statement of Changes in Stockholders Equity for the six months ended January 31,
    1999 (unaudited).................................................................       F-33
  Selected Notes to the Financial Statements (unaudited).............................       F-34
</TABLE>

                                      F-1
<PAGE>
                          INDEPENDENT AUDITORS' REPORT

Stockholders and Board of Directors
GraphOn Corporation
Campbell, California

    We have audited the accompanying balance sheets of GraphOn Corporation as of
December 31, 1998 and 1997 and the related statements of operations and
comprehensive income, stockholders' equity and cash flows for each of the three
years in the period ended December 31, 1998. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

    We conducted our audits in accordance with generally accepted auditing
standards. These standards require that we plan and perform our audits to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall presentation of the financial
statements. We believe our audits provide a reasonable basis for our opinion.

    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of GraphOn Corporation as of
December 31, 1998 and 1997, and the results of its operations and its cash flows
for each of the three years in the period ended December 31, 1998 in conformity
with generally accepted accounting principles.

San Jose, California
February 25, 1999, except with respect to matters discussed
in Note 6 as to which the date is May 30, 1999.

                                      F-2
<PAGE>
                              GRAPHON CORPORATION

                                 BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                              DECEMBER 31,
                                                                                       --------------------------
                                                                                           1998          1997
                                                                          MARCH 31,    -------------  -----------
                                                                            1999
                                                                        -------------
                                                                         (UNAUDITED)
<S>                                                                     <C>            <C>            <C>
                                                     ASSETS

CURRENT ASSETS:
  Cash and cash equivalents (Note 8)..................................  $   2,065,900  $   1,798,400  $   302,800
  Accounts receivable, net of allowance for doubtful accounts of
    $25,000, $25,000 and $0, respectively (Notes 8 and 9).............        601,400        564,700      308,100
  Available-for-sale securities (Notes 1 and 8).......................             --             --        8,600
  Prepaid expenses and other assets...................................         44,000         32,100       18,300
                                                                        -------------  -------------  -----------
TOTAL CURRENT ASSETS..................................................      2,711,300      2,395,200      637,800
                                                                        -------------  -------------  -----------
PROPERTY AND EQUIPMENT, net (Notes 2 and 3)...........................        438,800        423,300       50,300

PURCHASED TECHNOLOGY, net (Note 3)....................................      2,864,100      3,645,400           --

CAPITALIZED SOFTWARE, net.............................................         64,800         74,200       43,200

DEFERRED COMPENSATION EXPENSE (Note 6)................................        524,300        566,000           --

OTHER ASSETS..........................................................         20,200          6,400        2,000
                                                                        -------------  -------------  -----------
                                                                        $   6,623,500  $   7,110,500  $   733,300
                                                                        -------------  -------------  -----------
                                                                        -------------  -------------  -----------

                                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES:
  Convertible note payable (Notes 5, 6 and 13)........................  $          --  $     475,000  $        --
  Accounts payable....................................................        416,300        115,700       28,400
  Accrued expenses (Note 4)...........................................        432,400        498,900      142,900
  Deferred revenue....................................................         85,200        112,600      443,800
                                                                        -------------  -------------  -----------
TOTAL CURRENT LIABILITIES.............................................        933,900      1,202,200      615,100

COMMITMENTS, CONTINGENCIES AND SUBSEQUENT EVENTS (Notes 5, 6, 10, 11,
  and 13).............................................................
STOCKHOLDERS' EQUITY (Notes 5, 6, and 13).............................
  Preferred stock, no par value, 5,000,000 shares authorized, no
    shares issued and outstanding.....................................             --             --           --
  Common stock, no par value, 50,000,000 shares authorized,
    16,363,959, 14,294,003 and 6,000,000 shares issued and
    outstanding.......................................................     10,236,800      8,431,500      505,000
  Accumulated other comprehensive income (Notes 1 and 8)..............             --             --      (12,100)
  Accumulated deficit.................................................     (4,547,200)    (2,523,200)    (374,700)
                                                                        -------------  -------------  -----------
STOCKHOLDERS' EQUITY..................................................      5,689,600      5,908,300      118,200
                                                                        -------------  -------------  -----------
                                                                        $   6,623,500  $   7,110,500  $   733,300
                                                                        -------------  -------------  -----------
                                                                        -------------  -------------  -----------
</TABLE>

     See accompanying summary of accounting policies and notes to financial
                                  statements.

                                      F-3
<PAGE>
                              GRAPHON CORPORATION

               STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME

FOR THE YEARS ENDED DECEMBER 31, 1998, 1997, 1996 AND FOR THE THREE MONTHS ENDED
           MARCH 31, 1999 (UNAUDITED) AND MARCH 31, 1998 (UNAUDITED)

<TABLE>
<CAPTION>
                                                            YEARS ENDED DECEMBER 31,
                                                     --------------------------------------
                                                         1998         1997         1996
                                                     ------------  -----------  -----------  THREE MONTHS ENDED MARCH
                                                                                                        31,
                                                                                             -------------------------
                                                                                                 1999         1998
                                                                                             ------------  -----------
                                                                                             (UNAUDITED)   (UNAUDITED)
<S>                                                  <C>           <C>          <C>          <C>           <C>
REVENUES (Notes 8 and 9):
  Product sales....................................  $    608,700  $   480,000  $   505,000  $    195,300  $   121,200
  Maintenance......................................       320,300        8,200       75,000        44,200      132,300
  OEM licenses.....................................     1,184,800    1,437,900       14,800       400,000      200,000
  Training.........................................        10,400           --           --            --           --
                                                     ------------  -----------  -----------  ------------  -----------
TOTAL REVENUES.....................................     2,124,200    1,926,100      594,800       639,500      453,500

COST OF REVENUES (Note 10):
  Product sales....................................        28,500       43,500      261,300         3,600        8,200
  Maintenance......................................        22,200       16,600       12,800         9,400        5,000
  OEM licenses.....................................       293,500      403,200       61,500        76,300       66,600
                                                     ------------  -----------  -----------  ------------  -----------
TOTAL COST OF REVENUES.............................       344,200      463,300      335,600        89,300       79,800

GROSS PROFIT.......................................     1,780,000    1,462,800      259,200       550,200      373,700
                                                     ------------  -----------  -----------  ------------  -----------
OPERATING EXPENSES:
  Selling and marketing............................     1,440,300      827,300      192,700       755,600      222,000
  General and administrative (Notes 6 and 10)......     1,118,600      324,700      218,900     1,316,700      107,000
  Research and development.........................       840,200      190,500       41,700       509,400      119,000
                                                     ------------  -----------  -----------  ------------  -----------

TOTAL OPERATING EXPENSES...........................     3,399,100    1,342,500      453,300     2,581,700      448,000
                                                     ------------  -----------  -----------  ------------  -----------

(LOSS) INCOME FROM OPERATIONS......................    (1,619,100)     120,300     (194,100)   (2,031,500)     (74,300)

OTHER INCOME (EXPENSE):
  Interest and other income........................         9,800        7,200        6,400        14,900        2,500
  Interest expense (Note 6)........................      (521,900)      (2,100)          --        (6,600)     (20,000)
  Loss on sale of available-for-sale securities
    (Note 1).......................................       (16,500)          --           --            --           --
                                                     ------------  -----------  -----------  ------------  -----------
(LOSS) INCOME BEFORE PROVISION FOR INCOME TAXES....    (2,147,700)     125,400     (187,700)   (2,023,200)     (91,800)

PROVISION FOR INCOME TAXES (Note 7)................           800          900          800           800          800
                                                     ------------  -----------  -----------  ------------  -----------
NET (LOSS) INCOME..................................    (2,148,500)     124,500     (188,500)   (2,024,000)     (92,600)

OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
  Unrealized holding gain (loss) on investment
    (Note 1).......................................        12,100       (8,100)       7,500            --           --
                                                     ------------  -----------  -----------  ------------  -----------
COMPREHENSIVE (LOSS) INCOME........................    (2,136,400)     116,400     (181,000)   (2,024,000)     (92,600)
                                                     ------------  -----------  -----------  ------------  -----------
BASIC AND DILUTED (LOSS) EARNINGS PER
  COMMON SHARE.....................................  $      (0.32) $      0.02  $     (0.03) $      (0.13) $     (0.01)
                                                     ------------  -----------  -----------  ------------  -----------
                                                     ------------  -----------  -----------  ------------  -----------
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING.........     6,762,667    6,000,000    6,000,000    15,779,199    6,066,667
                                                     ------------  -----------  -----------  ------------  -----------
                                                     ------------  -----------  -----------  ------------  -----------
</TABLE>

     See accompanying summary of accounting policies and notes to financial
                                  statements.

                                      F-4
<PAGE>
                              GRAPHON CORPORATION

                       STATEMENTS OF STOCKHOLDERS' EQUITY

         FOR THE YEARS ENDED DECEMBER 31, 1998, 1997, 1996 AND FOR THE
                 THREE MONTHS ENDED MARCH 31, 1999 (UNAUDITED)

                           (NOTES 1, 2, 3, 6, AND 13)

<TABLE>
<CAPTION>
                                                       COMMON STOCK           ACCUMULATED
                                                ---------------------------  COMPREHENSIVE    ACCUMULATED
                                                   SHARES        AMOUNT          INCOME         DEFICIT         TOTAL
                                                ------------  -------------  --------------  -------------  -------------
<S>                                             <C>           <C>            <C>             <C>            <C>
BALANCES, December 31, 1995...................     6,000,000  $     505,000    $  (11,500)   $    (310,700) $     182,800
Change in market value of available-for-sale
  securities..................................            --             --         7,500               --          7,500
Net loss......................................            --             --            --         (188,500)      (188,500)
                                                ------------  -------------  --------------  -------------  -------------
BALANCES, December 31, 1996...................     6,000,000        505,000        (4,000)        (499,200)         1,800
Change in market value of available-for-sale
  securities..................................            --             --        (8,100)              --         (8,100)
Net income....................................            --             --            --          124,500        124,500
                                                ------------  -------------  --------------  -------------  -------------
BALANCES, December 31, 1997...................     6,000,000        505,000       (12,100)        (374,700)       118,200
Change in market value of available-for-sale
  securities..................................            --             --        12,100               --         12,100
Compensation expense related to issuance of
  common stock and granted options............            --        667,600            --               --        667,600
Interest expense related to issuance of common
  stock.......................................            --        475,000            --               --        475,000
Proceeds from employee stock purchase.........       508,500         38,100            --               --         38,100
Proceeds from sale of common stock, net of
  offering costs of $564,700..................     3,699,000      2,659,300            --               --      2,659,300
Issuance of common stock and warrants for
  property and equipment and purchased
  technology..................................     3,886,503      3,886,500            --               --      3,886,500
Exchange of convertible notes payable.........       200,000        200,000            --               --        200,000
Net loss......................................            --             --            --       (2,148,500)    (2,148,500)
                                                ------------  -------------  --------------  -------------  -------------
BALANCES, December 31, 1998...................    14,294,003      8,431,500            --       (2,523,200)     5,908,300

Balance of information is unaudited through
  March 31, 1999:
Proceeds from sale of common stock, net
  offering costs of $255,300..................     1,963,868      1,708,600            --               --      1,708,600
Proceeds from sale of common stock............       112,132         97,200            --               --         97,200
Purchase and retirement of common stock.......        (6,044)          (500)           --               --           (500)
Net loss......................................            --             --            --       (2,024,000)    (2,024,000)
                                                ------------  -------------  --------------  -------------  -------------
BALANCE, March 31, 1999.......................    16,363,959  $  10,236,800    $       --    $  (4,547,200) $   5,689,600
                                                ------------  -------------  --------------  -------------  -------------
                                                ------------  -------------  --------------  -------------  -------------
</TABLE>

     See accompanying summary of accounting policies and notes to financial
                                  statements.

                                      F-5
<PAGE>
                              GRAPHON CORPORATION

                            STATEMENTS OF CASH FLOWS

      FOR THE YEARS ENDED DECEMBER 31, 1998, 1997, 1996 AND FOR THE THREE
     MONTHS ENDED MARCH 31, 1999 (UNAUDITED) AND MARCH 31, 1998 (UNAUDITED)

                                   (NOTE 12)

<TABLE>
<CAPTION>
                                                              YEARS ENDED DECEMBER 31,
                                                        ------------------------------------
                                                            1998         1997        1996
                                                        ------------  ----------  ----------  THREE MONTHS ENDED MARCH
                                                                                                         31,
                                                                                              -------------------------
                                                                                                  1999         1998
                                                                                              ------------  -----------
                                                                                              (UNAUDITED)   (UNAUDITED)
<S>                                                     <C>           <C>         <C>         <C>           <C>
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net (loss) income...................................  $ (2,148,500) $  124,500  $ (188,500) $ (2,024,000)  $ (92,600)
  Adjustments to reconcile net (loss) income to net
    cash (used in) provided by operating activities:
  Depreciation and amortization.......................        65,200      31,000       1,100       824,200      10,600
  Allowance for doubtful accounts.....................        25,000          --          --            --          --
  Loss (gain) on sale of available-for-sale
    securities........................................        16,500          --      (4,400)           --          --
  Compensation expense (Note 6).......................       101,600          --          --        41,700          --
  Interest expense (Note 6)...........................       475,000          --          --            --      19,300
  Changes in operating assets and liabilities:
    Accounts receivable...............................      (281,600)    232,000    (461,700)      (36,700)   (105,600)
    Related party receivable..........................            --      34,400      (8,500)           --          --
    Prepaid expenses and other assets.................       (13,900)       (400)     28,900       (11,900)    (21,800)
    Accounts payable..................................        87,300      12,900      (1,800)      300,600      42,000
    Accrued expenses..................................       356,000     137,000     (19,500)      (66,500)    (19,600)
    Deferred revenue..................................      (331,200)   (358,300)    802,100       (27,400)    111,200
                                                        ------------  ----------  ----------  ------------  -----------
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES...    (1,648,600)    213,100     147,700    (1,000,000)    (56,500)
                                                        ------------  ----------  ----------  ------------  -----------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Proceeds from sale of available-for-sale
    securities........................................         4,300          --      40,500            --          --
  Purchase of available-for-sale securities...........            --          --     (20,700)           --          --
  Capitalization of software development costs........       (53,100)    (24,000)    (35,900)           --          --
  Capital expenditures................................      (179,400)    (39,300)    (28,500)      (49,000)    (11,100)
  Other assets........................................            --          --          --       (13,800)         --
                                                        ------------  ----------  ----------  ------------  -----------
NET CASH USED IN INVESTING ACTIVITIES.................      (228,200)    (63,300)    (44,600)      (62,800)    (11,100)
                                                        ------------  ----------  ----------  ------------  -----------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from convertible notes payable.............       775,000          --          --            --     475,000
  Repayment of convertible notes payable..............      (100,000)         --          --      (475,000)         --
  Net proceeds from issuance of common stock..........     2,697,400          --          --     1,805,800      25,000
  Purchase and retirement of stock....................            --          --          --          (500)         --
                                                        ------------  ----------  ----------  ------------  -----------
NET CASH PROVIDED BY FINANCING ACTIVITIES.............     3,372,400          --          --     1,330,300     500,000
                                                        ------------  ----------  ----------  ------------  -----------
NET INCREASE IN CASH AND CASH EQUIVALENTS.............     1,495,600     149,800     103,100       267,500     432,400
CASH AND CASH EQUIVALENTS, beginning of the period....       302,800     153,000      49,900     1,798,400     302,800
                                                        ------------  ----------  ----------  ------------  -----------
CASH AND CASH EQUIVALENTS, end of the period..........  $  1,798,400  $  302,800  $  153,000  $  2,065,900   $ 735,200
                                                        ------------  ----------  ----------  ------------  -----------
                                                        ------------  ----------  ----------  ------------  -----------
</TABLE>

     See accompanying summary of accounting policies and notes to financial
                                  statements.

                                      F-6
<PAGE>
                              GRAPHON CORPORATION
                         SUMMARY OF ACCOUNTING POLICIES

ORGANIZATION AND BUSINESS

    GraphOn Corporation (the Company) was incorporated in the state of
California in May 1982 and has headquarters in Campbell, California. The Company
develops, markets, sells and supports server-based software that empowers a
diverse range of desktop computing devices (desktops) to access server-based
Windows and UNIX applications from any location, over network or Internet
connections.

USE OF ESTIMATES

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities at the
date of the financial statements and the reported amounts of revenues and
expenses during the reporting period. Actual results could differ from those
estimates.

CASH AND CASH EQUIVALENTS

    The Company considers all highly liquid investments purchased with original
maturities of three months or less to be cash equivalents.

MARKETABLE SECURITIES

    The Company accounts for investments in marketable securities under the
provisions of Statements of Financial Accounting Standards (SFAS) No. 115,
ACCOUNTING FOR CERTAIN INVESTMENTS IN DEBT AND EQUITY SECURITIES. Under SFAS No.
115, securities are classified and accounted for as follows:

    - Debt securities that the enterprise has the positive intent and ability to
      hold to maturity are classified as held-to-maturity securities and
      reported at amortized cost.

    - Debt and equity securities that are bought and held principally for the
      purpose of selling them in the near term are classified as trading
      securities and reported at fair value, with unrealized gains and losses
      included in earnings.

    - Debt and equity securities not classified as either held-to-maturity
      securities or trading securities are classified as available-for-sale
      securities and reported at fair value, with unrealized gains and losses
      excluded from earnings and reported in a separate component of
      shareholders' equity.

PROPERTY AND EQUIPMENT

    Property and equipment are stated at cost. Depreciation is calculated using
the straight-line method over the estimated useful lives of the respective
assets, generally three to seven years. Amortization of leasehold improvements
is calculated using the straight-line method over the lesser of the lease term
or useful lives of the respective asset, generally seven years.

PURCHASED TECHNOLOGY

    Purchased technology is to be amortized on a straight-line basis over the
life of the related technology or five years, whichever is less.

CAPITALIZED SOFTWARE COSTS

    Costs incurred internally in creating computer software products to be sold,
leased, or otherwise marketed are charged to expense when incurred as research
and development until technological feasibility has been established for the
product. Thereafter, such costs are capitalized until the product is available
for general release to customers and amortized based on either estimated current
and future

                                      F-7
<PAGE>
revenue for each product or straight-line amortization over the shorter of three
years or the remaining estimated life of the product, whichever produces the
higher expense for the period. As of December 31, 1998 and 1997, capitalized
costs aggregated $113,000 and $59,800, with accumulated amortization of $38,800
and $16,600. For the three months ended March 31, 1999, no additional costs had
been capitalized and accumulated amortization aggregated $48,200.

REVENUE RECOGNITION AND DEFERRED REVENUE

    In October 1997, the American Institute of Certified Public Accountants
(AICPA) issued Statement of Position (SOP) 97-2, SOFTWARE REVENUE RECOGNITION,
which generally requires revenue earned on software arrangements involving
multiple elements to be allocated to each element arrangement based on the
relative fair values of the elements. If there is no evidence of the fair value
for all the elements in a multiple element arrangement all revenue from the
arrangement is deferred until such evidence exists or until all elements are
delivered. In accordance with SOP 97-2, the Company recognizes revenue from the
sale of software licenses when all the following conditions are met: the
software has been shipped to the customer, no significant obligations remain,
and collection is probable. Revenue from sale of maintenance agreements is
recognized ratably over the term of the agreement. OEM (Original Equipment
Manufacturer) licenses revenue is generally recognized as deliveries are made or
at the completion of contractual billing milestones. Deferred revenue, resulting
from maintenance and license agreements, aggregated $112,600 and $443,800 as of
December 31, 1998 and 1997.

ADVERTISING COSTS

    The cost of advertising is expensed as incurred. Advertising costs for the
years ended December 31, 1998, 1997 and 1996 and for the three month period
ended March 31, 1999, were approximately $58,400, $60,000, $0, and $109,600,
respectively.

INCOME TAXES

    Income taxes are calculated using the liability method of accounting for
income taxes specified by SFAS No. 109, ACCOUNTING FOR INCOME TAXES. Deferred
income taxes are recognized for the tax consequences of temporary differences
between the financial statements and income tax bases of assets, liabilities and
carryforwards using enacted tax rates. Valuation allowances are established when
necessary, to reduce deferred tax assets to the amount expected to be realized.
Realization is dependent upon future pre-tax earnings, the reversal of temporary
differences between book and tax income, and the expected tax rates in effect in
future periods.

FAIR VALUE OF FINANCIAL INSTRUMENTS

    The following methods and assumptions were used by the Company in estimating
its fair value disclosures for financial instruments:

    CASH AND CASH EQUIVALENTS:

    The carrying amount reported in the balance sheet for cash and cash
equivalents approximate fair value.

    INVESTMENT SECURITIES:

    The fair values of marketable debt and equity securities are based on quoted
market prices.

    SHORT-TERM DEBT:

    The fair value of short-term debt is estimated based on current interest
notes available to the Company for debt instruments with similar terms and
maturities.

                                      F-8
<PAGE>
    As of December 31, 1998 and 1997, the fair values of the Company's financial
instruments approximate their historical carrying amounts.

LONG-LIVED ASSETS

    Long-lived assets are assessed for possible impairment whenever events or
changes in circumstances indicate that the carrying amounts may not be
recoverable, or whenever management has committed to a plan to dispose of the
assets. Such assets are carried at the lower of book value or fair value as
estimated by management based on appraisals, current market value, comparable
sales value, and undiscounted future cash flows as appropriate. Assets to be
held and used affected by such impairment loss are depreciated or amortized at
their new carrying amount over the remaining estimated life; assets to be sold
or otherwise disposed of are not subject to further depreciation or
amortization.

STOCK-BASED INCENTIVE PROGRAMS

    SFAS No. 123, ACCOUNTING FOR STOCK-BASED COMPENSATION, encourages entities
to recognize compensation costs for stock-based employee compensation plans
using the fair value based method of accounting defined in SFAS No. 123, but
allows for the continued use of the intrinsic value based method of accounting
prescribed by Accounting Principles Board (APB) Opinion No. 25, ACCOUNTING FOR
STOCK ISSUED TO EMPLOYEES. The Company continues to use the accounting
prescribed by APB Opinion No. 25 and as such is required to disclose pro forma
net income and earnings per share as if the fair value based method of
accounting had been applied.

ADOPTION OF NEW ACCOUNTING PRONOUNCEMENTS

    In February 1998, the Financial Accounting Standards Board (FASB) issued
SFAS No. 132, EMPLOYER'S DISCLOSURE ABOUT PENSIONS AND OTHER POSTRETIREMENT
BENEFITS, which standardizes the disclosure requirements for pension and other
postretirement benefits. The adoption of SFAS No. 132 did not have a material
impact the Company's current disclosures.

    In June 1998, the FASB issued SFAS No. 133, ACCOUNTING FOR DERIVATIVE
INSTRUMENTS AND HEDGING ACTIVITIES. SFAS No. 133 requires companies to recognize
all derivatives contracts as either assets or liabilities in the balance sheet
and to measure them at fair value. If certain conditions are met, a derivative
may be specifically designated as a hedge, the objective of which is to match
the timing of gain or loss recognition on the hedging derivative with the
recognition of (i) the changes in the fair value of the hedged asset or
liability that are attributable to the hedged risk or (ii) the earnings effect
of the hedged forecasted transaction. For a derivative not designated as a
hedging instrument, the gain or loss is recognized in income in the period of
change. SFAS No. 133 is effective for all fiscal years beginning June 15, 2000.

    Historically, the Company has not entered into derivatives contracts either
to hedge existing risks or for speculative purposes. Accordingly, the Company
does not expect adoption of the new standard on July 1, 1999 to affect its
financial statements.

EARNINGS PER COMMON SHARE

    In February 1997, the FASB issued SFAS No. 128, EARNINGS PER SHARE, which
was effective December 28, 1997. Conforming to SFAS No. 128, the Company changed
its method of computing earnings per share and restated all prior periods
included in the financial statements. Under SFAS No. 128, the dilutive effect of
stock options is excluded from the calculation of basic earnings per share.

RECLASSIFICATIONS

    Certain amounts in the 1997 financial statements have been reclassified to
conform with the 1996 and 1998 presentation.

                                      F-9
<PAGE>
                              GRAPHON CORPORATION

                         NOTES TO FINANCIAL STATEMENTS

1. AVAILABLE-FOR-SALE SECURITIES

    As of December 31, 1997, the Company held 4,000 shares of common stock in a
publicly traded company. In 1998, the Company sold these shares and recorded a
loss on the sale of $16,500. A summary of available-for-sale securities follows:

<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                    ---------------------
                                                                       1998       1997
                                                    MARCH 31, 1999  ----------  ---------
                                                    --------------
                                                     (UNAUDITED)
<S>                                                 <C>             <C>         <C>
Cost of securities................................    $       --    $       --  $  20,700
Less unrealized loss..............................            --            --     12,100
                                                    --------------  ----------  ---------
                                                      $       --    $       --  $   8,600
                                                    --------------  ----------  ---------
                                                    --------------  ----------  ---------
</TABLE>

2. PROPERTY AND EQUIPMENT

    Property and equipment consisted of the following:

<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                    ---------------------
                                                                       1998       1997
                                                    MARCH 31, 1999  ----------  ---------
                                                    --------------
                                                     (UNAUDITED)
<S>                                                 <C>             <C>         <C>
Equipment.........................................    $  340,800    $  292,800  $  61,700
Furniture and fixtures............................       175,600       175,600      2,300
Leasehold improvements............................        14,500        13,500      1,900
                                                    --------------  ----------  ---------
                                                         530,900       481,900     65,900

Less accumulated depreciation and amortization....        92,100        58,600     15,600
                                                    --------------  ----------  ---------
                                                      $  438,800    $  423,300  $  50,300
                                                    --------------  ----------  ---------
                                                    --------------  ----------  ---------
</TABLE>

3. PURCHASED TECHNOLOGY

    In December 1998, the Company issued 3,886,503 shares of common stock and
388,650 warrants to Corel Corporation in exchange for certain fixed assets and
technology for the deployment of Windows NT applications through server based
computing (Note 6). Based on the fair market value of the securities issued, as
determined by the prices associated with the Private Placement Offering (Note
6), the aggregate purchase price was $3,886,500, which was allocated to the
following respective assets based on their fair market value at the time of the
transaction:

<TABLE>
<CAPTION>
<S>                                                                           <C>
Equipment...................................................................  $     77,100
Furniture...................................................................       164,000
Purchased technology........................................................     3,645,400
                                                                              ------------
                                                                              $  3,886,500
                                                                              ------------
                                                                              ------------
</TABLE>

                                      F-10
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

3. PURCHASED TECHNOLOGY (CONTINUED)

<TABLE>
<CAPTION>
                                                                            DECEMBER 31,
                                                                                1998
                                                              MARCH 31,    ---------------
                                                                 1999
                                                             ------------
                                                             (UNAUDITED)
<S>                                                          <C>           <C>
Purchased technology.......................................  $  3,645,400   $   3,645,400
Less accumulated amortization..............................       781,300              --
                                                             ------------  ---------------
                                                             $  2,864,100   $   3,645,400
                                                             ------------  ---------------
                                                             ------------  ---------------
</TABLE>

4. ACCRUED EXPENSES

    Accrued expenses consisted of the following:

<TABLE>
<CAPTION>
                                                                        DECEMBER 31,
                                                                   ----------------------
                                                                      1998        1997
                                                   MARCH 31, 1999  ----------  ----------
                                                   --------------
                                                    (UNAUDITED)
<S>                                                <C>             <C>         <C>
Payroll and related expenses.....................    $  139,200    $  140,600  $   34,400
Professional fees................................        94,200       180,000      35,000
Accrued payroll taxes............................        76,700        76,700          --
Royalties........................................        70,400        65,300      46,100
Other............................................        51,900        36,300      27,400
                                                   --------------  ----------  ----------
                                                     $  432,400    $  498,900  $  142,900
                                                   --------------  ----------  ----------
                                                   --------------  ----------  ----------
</TABLE>

5. CONVERTIBLE NOTE PAYABLE

    In March 1998 the Company issued a convertible note payable for $475,000 to
an affiliate (the Agent Affiliate) of the placement agent dated September 2,
1998 for the Company's subsequent private placement offering of common stock
(the Offering). The convertible note bears interest at 10% and is due upon the
earlier date of the Company raising between $2,500,000 and $3,000,000 in the
Offering or six months after its commencement. The note is convertible into
shares of common stock at $1.00 per share at the option of the note holder (Note
13).

    In September 1998, the Agent Affiliate and the Company's CEO loaned $200,000
and $100,000, respectively, to the Company pursuant to convertible promissory
notes bearing interest at 8% per annum, which mature at the earlier of the first
closing of the Offering or 12 months from the date of the notes. Such notes, at
the option of the lender, may be converted into shares of common stock at $1.00
per share. In connection with this transaction, the Agent Affiliate and CEO were
issued warrants to purchase 100,000 and 50,000 shares, respectively, at $1.00
per share (Note 6).

    On December 31, 1998, the loan by the Agent Affiliate was converted into
200,000 shares of common stock. Also on December 31, 1998, the Company repaid
the $100,000 loan from the CEO, plus accrued interest.

                                      F-11
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  STOCKHOLDERS' EQUITY

    PRIOR BANKRUPTCY

    In November 1991, the Company filed a Voluntary Petition for Relief under
Chapter 11 of the Bankruptcy Code. At that time, the Company had indebtedness in
excess of $2.3 million and had 1,624,940 voting shares of common stock
outstanding. In July 1994, the Company's plan of reorganization under Chapter 11
(the Reorganization Plan) was confirmed.

    At the time of the confirmation of the Reorganization Plan, all shares of
stock, options, and warrants outstanding were canceled. In addition, the
Reorganization Plan provided for the issuance of 100 shares of the Company's
reorganized common stock in exchange for waiver of certain unsecured claims
against the Company by its then, and current, CEO.

    In addition, all administrative claims, priority claims, and allowed claims
in the administrative convenience class (generally, those under $200) were paid
in full. Unsecured creditors are to receive payment of 50% of the gross
royalties received by the Company from certain licensees up to the amount of
their total liability, through the year 2000. However, the largest unsecured
creditor will receive payments of 50% of the gross royalties received by the
Company from the revenue from certain licensees until its claim is paid in full.
The remaining 50% of the gross royalties received by the Company from these
certain licensees was available to the Company to conduct its ongoing
operations. As of December 31, 1998, the Company does not expect to pay any
additional significant amounts under the Reorganization Plan. Accordingly, the
amounts are treated as included in the relief of debt as part of the bankruptcy
confirmed in 1994.

    The Company believes that its royalty payment obligations under the
bankruptcy court order relate only to licenses in place as of July 11, 1994.
However, there is no assurance that the court will not interpret the obligation
of the Company to include making payments from royalties earned from subsequent
licenses or licenses that it may secure in the future, or that its current
technology will not be deemed derivative of its technology existing at July 11,
1994.

    Consequently, there can be no assurance that the Company will not be
required to repay the creditors referenced in the bankruptcy proceedings to the
full amount of its liability of approximately $2,230,000. In addition, there is
no guarantee that a creditor will not attempt to assert a claim for royalties
from subsequent licenses, which could be costly and could have a material
adverse effect on the Company's business, financial condition, and/or results of
operations.

    COMMON STOCK

    In January 1998, the CEO personally sold 440,016 shares of his stock to
various employees and directors of the Company at a price of $0.02, the then
fair market value of the stock, and in May and August, 193,238 additional shares
at $0.075. The ownership of these shares vest over approximately four years with
the CEO having the right to repurchase non-vested shares upon termination of
employment. In May 1998, the Company issued and sold 508,500 shares under the
Stock Grant Program, at $0.075 and granted 20,000 options, under Stock Option
Plan, at $0.075 to employees of the Company which also vest over a four year
period. The shares sold and options granted from March 1998 forward were
ascribed a fair market value of $1.00 per share, the price at which the Company
offered its shares through a private placement stock offering in September 1998.

    The Company recognized $667,600 in deferred compensation expense associated
with the sale of the above securities, to be amortized over the vesting period
of the underlying securities.

                                      F-12
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  STOCKHOLDERS' EQUITY (CONTINUED)
    In accordance with APB Opinion No. 25, ACCOUNTING FOR STOCK ISSUED TO
EMPLOYEES, the Company recorded, in General and Administrative expense, $101,600
of compensation costs for the year ended December 31, 1998 and $41,700 for the
three months period ended March 31, 1999.

    In March 1998, the Company sold 500,000 shares of common stock for cash
proceeds of $25,000 to the Agent Affiliate, concurrent with the issuance of
convertible notes for $475,000. During 1998, the Company recognized interest
expenses of $475,000 relating to this transaction.

    In July 1998, the Company's Board of Directors declared a 60,000 to 1 stock
split. All references to number of shares and per share data in the financial
statements have been adjusted to reflect the stock split on a retroactive basis.

    In September 1998, the Company offered shares of its common stock through a
private placement stock offering (the Offering). The Offering established a
minimum and maximum offering of 2,500,000 and 4,500,000 shares of common stock,
respectively, at $1.00 per share, plus an additional 675,000 shares in the event
of over-subscriptions. As part of the Offering, the placement agent received
warrants to purchase 20,000 shares of common stock at $1.00 per share for each
100,000 shares sold through the Offering.

    Pursuant to a Subscription Agreement, executed by each investor who
purchased shares of the Company's common stock in connection with the first
closing of the Offering (the First Closing Investors), each First Closing
Investor holds the right to purchase his pro rata portion of any securities
issued by the Company for cash at an amount equal to the price, or other
consideration, for which such securities were issued until such time as there is
an initial public offering of the Company's securities. Such preemptive rights
do not apply to any securities issued pursuant to options, warrants and rights
and option plans existing at the time of the first closing. The investors who
purchased common stock in connection with the second closing of the Offering, as
well as certain of the First Closing Investors who agreed to amend their rights,
hold the same right except that such right does not apply to securities issued
by the Company in connection with, or in consideration of, (i) the Company's
acquisition of another corporation or entity by consolidation, merger, purchase
of all or substantially all of the assets or other business combination in which
the Company is the surviving entity, provided such issuance is approved by a
majority of the Board of Directors or (ii) any equipment or real property lease,
loan, credit line, guaranty of indebtedness or acquisition of assets, other than
cash but including intellectual property or other intangible assets.

    Additionally, in March 1998, the CEO and Executive Vice President of the
Company entered into a contingent sale arrangement with respect to the sale of
3,500,000 shares of their common stock in the Company to the Agent Affiliate
under non-recourse installment notes. Under the terms of the notes, $200,000 was
due and paid with the commencement of the Offering, with $800,000; $1,000,000;
and $1,500,000 being due and payable January 1999, July 1999 and January 2000,
respectively (Note 13). The notes bear interest at 6%, payable quarterly, and
are secured by the underlying pledged shares. The CEO and Executive Vice
President retained voting privilege on these shares until fully paid for, and
said shares revert back to the CEO and Executive Vice President in case of
default by the Agent Affiliate.

    In December 1998, the Company issued 3,886,503 shares of common stock with
an ascribed value of $3,886,500, and granted warrants to purchase 388,650 shares
of common stock at $1.00 in exchange for certain fixed assets and technology.
The terms of this purchase agreement also require that the

                                      F-13
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  STOCKHOLDERS' EQUITY (CONTINUED)
Company shall issue an additional 1,607,000 shares of common stock, for no
additional consideration, on June 30, 2000, if the Company at that date has not
completed an initial public offering of any of its equity securities or a merger
or sale of all, or substantially all, of its assets. Should these contingent
shares be issued, they will be valued at their fair market value at the time of
such issuance with a resulting charge to the statement of operations.

    STOCK PURCHASE WARRANTS

    As of December 31, 1998, the following common stock warrants were issued and
outstanding:

<TABLE>
<CAPTION>
                                                          SHARES SUBJECT   EXERCISE    EXPIRATION
ISSUED WITH RESPECT TO:                                     TO WARRANT       PRICE        DATE
- --------------------------------------------------------  --------------  -----------  -----------
<S>                                                       <C>             <C>          <C>
Convertible notes.......................................       150,000     $    1.00           (A)
Private placement.......................................       639,800     $    1.00           (A)
Purchased technology....................................       388,650     $    1.00      12/2003
                                                               -------         -----   -----------
                                                               -------         -----   -----------
</TABLE>

- ------------------------

(A) The warrants issued with respect to the convertible notes and the private
    placement expire upon earlier of three years after the closing date of a
    merger (Note 13), three years after the closing date of an IPO, or January
    2006.

    STOCK GRANT PROGRAM

    In July 1998, the Company adopted a stock grant program (Stock Grant
Program), which is restricted to employees, officers, and consultants of the
Company. The Company has authorized the issuance of up to 1,300,000 shares of
the Company's common stock in connection with the Stock Grant Program and the
Stock Option Plan, discussed below. In May 1999, the number of shares authorized
under the plan was increased by 2,700,000 shares to 4,000,000 shares.

    Under the Stock Grant Program, eligible individuals may, at the Plan
Administrator's discretion, be issued shares of common stock directly, either
through (a) the purchase of shares at a price not less than 85% of the estimated
fair market value of the stock at the time of the issuance, or (b) as a bonus
for past services rendered. Ownership of such shares generally vest over a four
year period. During August 1998, the Company issued 508,500 shares under the
Stock Grant Program.

    STOCK OPTION PLAN

    In July 1998, the Company adopted a Stock Option Plan (The Plan). The Plan
is restricted to employees, officers, and consultants of the Company. Options
granted under the Plan generally vest over four years and are exercisable over
ten years. Non-satutory options are granted at prices not less than 85% of the
estimated fair value of the stock on the date of grant as determined by the
Board of Directors. Incentive options are granted at prices not less than 100%
of the estimated fair value of stock on the date of grant. However, options
granted to shareholders who own greater than 10% of the outstanding stock are
established at no less than 110% of the estimated fair value of the stock on the
date of grant.

                                      F-14
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

6.  STOCKHOLDERS' EQUITY (CONTINUED)
    A summary of status of the Company's Stock Option Plan as of December 31,
1998, and changes during the year then ended is presented in the following
table:

<TABLE>
<CAPTION>
                                                                           OPTIONS OUTSTANDING
                                                                          ----------------------
                                                                                      WEIGHTED-
                                                                                       AVERAGE
                                                                                      EXERCISE
                                                                           SHARES       PRICE
                                                                          ---------  -----------
<S>                                                                       <C>        <C>
Balances, December 31, 1997.............................................         --   $      --
Shares reserved.........................................................    791,500          --
Granted.................................................................    (20,000)      0.075
                                                                          ---------  -----------
Balances, December 31, 1998.............................................    771,500   $   0.075
                                                                          ---------  -----------
                                                                          ---------  -----------
Exercisable at year-end.................................................      2,664   $   0.075
                                                                          ---------  -----------
                                                                          ---------  -----------
Weighted-average fair value of options granted during the period:                     $   0.075
                                                                                     -----------
                                                                                     -----------
</TABLE>

    During the three months ended March 31, 1999, the Company granted 748,500
stock options at an average exercise price of $0.85 per share, which represented
85% of the estimated fair market value of the stock.

    The following table summarizes information about stock options outstanding
as of December 31, 1998:

<TABLE>
<CAPTION>
                        OPTIONS OUTSTANDING                               OPTIONS EXERCISABLE
- --------------------------------------------------------------------  ----------------------------
                                       WEIGHTED-         WEIGHTED-                     WEIGHTED-
                                        AVERAGE           AVERAGE                       AVERAGE
                                       REMAINING         EXERCISE                      EXERCISE
 RANGE OF EXERCISE     NUMBER      CONTRACTUAL LIFE        PRICE         NUMBER          PRICE
       PRICE         OUTSTANDING        (YEARS)          PER SHARE     EXERCISABLE     PER SHARE
- -------------------  -----------  -------------------  -------------  -------------  -------------
<S>                  <C>          <C>                  <C>            <C>            <C>
  $0.075 - $1.00         20,000             9.67         $   0.075          2,664      $   0.075
</TABLE>

    SFAS No. 123, ACCOUNTING FOR STOCK-BASED COMPENSATION, requires the Company
to provide pro forma information regarding net (loss) income and (loss) earnings
per share as if compensation cost for the Company's stock option plan had been
determined in accordance with the fair value based method prescribed in SFAS
No.123. The Company estimates the fair value of stock options at the grant date
by using the Black-Scholes option pricing-model with the following weighted
average assumptions used for grants in 1998: dividend yield of 0; expected
volatility of 112%; risk-free interest rate of 5.7%; and expected lives of three
years for all plan options. Under the accounting provisions of SFAS No. 123, the
Company's pro forma net loss would have been $2,137,900, and the basic net loss
per common share would have remained unchanged at $0.32.

7.  INCOME TAXES

    The provision for income taxes for the years ended December 31, 1998, 1997
and 1996 and for the three months ended March 31, 1999 and 1998 consist of
minimum state taxes.

                                      F-15
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

7. INCOME TAXES (CONTINUED)

    The following summarizes the differences between income tax expense and the
amount computed applying the federal income tax rate of 34%:

<TABLE>
<CAPTION>
                                                                      DECEMBER 31,
                                                           -----------------------------------
                                                              1998         1997        1996
                                                           -----------  ----------  ----------
<S>                                                        <C>          <C>         <C>
Federal income tax at
  statutory rate.........................................  $  (599,400) $   41,600  $  (63,800)
State income taxes, net of
  federal benefit........................................     (102,400)      7,700     (11,500)
Utilization of net operating
  loss carryforwards.....................................           --     (51,400)         --
Tax benefit not currently
  recognizable...........................................      697,700          --      75,300
Other....................................................        4,900       3,000         800
                                                           -----------  ----------  ----------
Provision for income taxes...............................  $       800  $      900  $      800
                                                           -----------  ----------  ----------
                                                           -----------  ----------  ----------
</TABLE>

    Deferred income taxes and benefits result from temporary timing differences
in the recognition of certain expenses and income items for tax and financial
reporting purposes, as follows:

<TABLE>
<CAPTION>
                                                                           DECEMBER 31,
                                                                    --------------------------
                                                                        1998          1997
                                                                    -------------  -----------
<S>                                                                 <C>            <C>
Net operating loss carryforward...................................  $   1,038,800  $   452,900
Tax credit carryforward...........................................        112,100       22,800
Capitalized software..............................................        (29,600)     (17,200)
Depreciation and amortization.....................................         (6,000)      (2,500)
Accrued compensation and benefits.................................         37,500        4,200
Reserves not currently deductible.................................         35,800       17,900
                                                                    -------------  -----------
Total deferred tax asset..........................................      1,188,600      478,100
Valuation allowance                                                    (1,188,600)    (478,100)
                                                                    -------------  -----------
Net deferred tax asset                                              $          --  $        --
                                                                    -------------  -----------
                                                                    -------------  -----------
</TABLE>

    The Company has net operating loss carryforwards available to reduce future
taxable income, if any, of approximately $2,780,800 for Federal income tax
purposes. The benefits from these carryforwards expire through 2018. As of
December 31, 1998, management believes it cannot be determined that it is more
likely than not that these carryforwards and its other deferred tax assets will
be realized, and accordingly, fully reserved for these deferred tax assets.

    In 1998 the Company experienced a "change of ownership" as defined by the
provisions of the Tax Reform Act of 1986. As such, the Company's utilization of
its net operating loss carryforwards will be limited to approximately $400,000
per year until such carryforwards are fully utilized.

                                      F-16
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

8. CONCENTRATION OF CREDIT RISK

    Financial instruments, which potentially subject the Company to
concentration of credit risk, consist principally of cash and cash equivalents,
investments and trade receivables. The Company places its cash and cash
equivalents with high quality financial institutions and, by policy, limits the
amounts of credit exposure to any one financial institution. Available-for-sale
securities are held in public companies for which there is a ready market.

    The Company's accounts receivable are derived from many customers in various
industries. The Company believes any risk of accounting loss is significantly
reduced due to the diversity of its end-customers and geographic sales areas.
The Company performs credit evaluation of its customers' financial condition
whenever necessary, and generally does not require cash collateral or other
security to support customer receivables.

9. MAJOR CUSTOMERS

    For the year ended December 31, 1998, three customers accounted for
approximately 29%, 21% and 17% of revenues, respectively with related accounts
receivable as of December 31, 1998 of $0, $500,000 and $0, respectively.

    For the year ended December 31, 1997, one customer accounted for
approximately 70% of revenues, with related accounts receivable at December 31,
1997 of $62,500.

    In 1996, no one customer accounted for greater than 10% of revenues.

10. COMMITMENTS

OPERATING LEASES

    In April 1995, the Company entered into an operating lease for its current
headquarters facility, which is renewable in one-year increments for ten years.
In June 1998, the Company entered into a three-year non-cancelable operating
lease for a facility in Washington. In December 1998, the Company entered into a
five-year operating lease for a facility in New Hampshire, which is cancelable
as of October 31, 2001.

    The facility leases require the Company to pay certain maintenance and
operating expenses, such as taxes, insurance, and utilities. Rent expense for
the years ended December 31, 1998, 1997 and 1996 aggregated $48,300, $17,120 and
$14,900, respectively. Rent expense for the three months ended March 31, 1999
and 1998 aggregated $76,400 and $12,100, respectively.

    Future minimum annual lease payments for these leases are as follows:

<TABLE>
<CAPTION>
YEAR ENDING DECEMBER 31,
- ----------------------------------------------------------------------------------
<S>                                                                                 <C>
1999..............................................................................  $  261,600
2000..............................................................................     256,900
2001..............................................................................     194,000
                                                                                    ----------
                                                                                    $  712,500
                                                                                    ----------
                                                                                    ----------
</TABLE>

                                      F-17
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

10. COMMITMENTS (CONTINUED)
ROYALTY AGREEMENTS

    The Company licenses essential components (Developed Technology) of its core
technology from three different parties (collectively, Software Developers) to
whom it pays royalties pursuant to three different exclusive license agreements
(Technology Agreements). Certain minor elements of the Company's technology
(Nonexclusive Technology) are also licensed from the Software Developers
pursuant to non-exclusive agreements (Nonexclusive Agreements). The Technology
Agreements and the Nonexclusive Agreements call for royalty payments to the
Software Developers. Such royalty payments are based on a percentage of net
revenues (Royalty Rate) received by the Company for sales of the Company's
products that contain the Developed Technology. The Royalty Rate is 4.8% and
2.9% for 1999 and 2000, respectively. The Company also holds an option to
purchase the Developed Technology, and to purchase a perpetual license to the
Nonexclusive Technology from the Software Developers, which is exercisable
beginning in December 2000, for an aggregate of $6,000 plus the difference
between royalties paid to date and certain minimum royalty payments. If the
Company does not exercise its option, the Royalty Rate would continue at 2.0%
with respect to the Developed Technology.

    The Technology Agreements and the Nonexclusive Agreements also call for lump
sum payments by the Company in the event of a change in control transaction,
defined as a sale of all or substantially all of the Company's assets or a
merger or reorganization with another business entity after which the
shareholders of the Company hold 50% or less of the total equity or voting power
of the surviving entity. The payments are based upon a percentage of the total
consideration received by the Company or payable to its shareholders in such a
transaction (Transaction Rate). The Transaction Rate would be 4.8% and 2.9% if
the change in control transaction occurs in 1999 or 2000, respectively. Each of
the Technology and Nonexclusive Agreements, unless terminated earlier pursuant
to the terms of the Agreements, will terminate on September 6, 2006 (Note 13).

11. EMPLOYEE 401(k) PLAN

    In December 1998, the Company adopted a 401(k) Plan ("the Plan") to provide
retirement benefit for its employees. As allowed under Section 401(k) of the
Internal Revenue Code, the Plan provides tax-deferred salary deductions for
eligible employees.

    Employees may contribute up to 15% of their annual compensation to the Plan,
limited to a maximum annual amount as set periodically by the Internal Revenue
Service. The Company made no contributions to the Plan in 1998.

                                      F-18
<PAGE>
                              GRAPHON CORPORATION

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

12. SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION

    The following is supplemental disclosure for the statements of cash flows.

<TABLE>
<CAPTION>
                                                                           THREE
                                                                          MONTHS
                                                                           ENDED          YEARS ENDED DECEMBER 31,
                                                                         MARCH 31,   ----------------------------------
                                                                           1999          1998        1997       1996
                                                                        -----------  ------------  ---------  ---------
<S>                                                                     <C>          <C>           <C>        <C>
CASH PAID:
Income taxes..........................................................   $     800   $        900  $     800  $     800
Interest..............................................................   $   6,400   $     11,300  $   2,100  $      --
NONCASH INVESTING ACTIVITIES:
Stock and warrants issued for
  purchased technology and other
  assets..............................................................   $      --   $  3,886,500  $      --  $      --
NONCASH FINANCING ACTIVITIES:
Issuance of common stock for
  convertible note payable............................................   $      --   $    200,000  $      --  $      --
</TABLE>

13. SUBSEQUENT EVENTS

    In January 1999, the Company completed the third and final closing of the
Offering, in which it sold 1,963,868 shares of common stock at $1.00 per share,
for net proceeds of $1,708,600, and granted additional warrants to purchase
392,774 shares of common stock.

    In January 1999, the convertible note payable for $475,000 to the Agent
Affiliate was retired from proceeds from the third closing of the Offering.

    In January 1999, the CEO and Executive Vice President received $800,000 for
the sale of 800,000 shares of their common stock of the Company to the Agent
Affiliate.

    In February 1999, the Company and its shareholders entered into a merger
agreement with Unity First Acquisition Corporation (UFAC), a publicly-traded
holding company in New York, under which GraphOn will exchange all its
outstanding common stock for UFAC shares at the rate of 0.5576 UFAC shares for
every 1.00 GraphOn shares. The transaction will be a forward merger, with UFAC
surviving the merger and changing its name to GraphOn Corporation. The merger is
expected to close in June 1999 and is subject to approval of the respective
shareholders of UFAC and GraphOn Corporation.

    In March 1999, the Company entered into a non-binding agreement with the
Software Developers of the Technology Agreements (Note 10) whereby on the
successful consumation of the UFAC merger, the Company would pay the Software
Developers a lump sum of $520,400 in settlement of all future royalties due
under the Technology Agreements.

    In May 1999, the Company granted 50,000 stock options at an average exercise
price of $3.26 per share, which represented the estimated fair market value of
the stock.

                                      F-19
<PAGE>
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To Unity First Acquisition Corp:

    We have audited the accompanying balance sheets of Unity First Acquisition
Corp. (a Delaware corporation in the development stage) as of July 31, 1998 and
1997, and the related statements of operations, changes in shareholders' equity
and cash flows for the years ended July 31, 1998 and 1997, for the period from
inception (May 30, 1996) to July 31, 1996, and for the period from inception
(May 30, 1996) to July 31, 1998. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Unity First Acquisition
Corp. as of July 31, 1998 and 1997, and the results of its operations and its
cash flows for the years ended July 31, 1998 and 1997, for the period from
inception (May 30, 1996) to July 31, 1996, and for the period from inception
(May 30, 1996) to July 31, 1998, in conformity with generally accepted
accounting principles.

    The accompanying financial statements have been prepared assuming that the
Company will continue as a going concern. As discussed in Note 1 to the
financial statements, the Company is a development stage enterprise with no
significant operating results to date and, at July 31, 1998, had $196 of
remaining unrestricted assets available to meet its current obligations. These
factors raise substantial doubt about the Company's ability to continue as a
going concern. Management's plans in regards to these matters are described in
Notes 1, 3 and 10. The financial statements do not include any adjustments that
might result from the outcome of this uncertainty.

                                          ARTHUR ANDERSEN LLP

New York, New York
December 10, 1998

                                      F-20
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                                 BALANCE SHEETS

<TABLE>
<CAPTION>
                                                                                                 JULY 31,
                                                                                        --------------------------
<S>                                                                                     <C>           <C>
                                                                                            1998          1997
                                                                                        ------------  ------------
                                                      ASSETS
CASH AND CASH EQUIVALENTS.............................................................  $        196  $    266,533
RESTRICTED CASH AND INVESTMENTS.......................................................     6,489,707     6,198,488
                                                                                        ------------  ------------
                                                                                        ------------  ------------
    TOTAL ASSETS......................................................................  $  6,489,903  $  6,465,021
                                                                                        ------------  ------------
                                                                                        ------------  ------------
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
LIABILITIES:
ACCRUED EXPENSES......................................................................  $    379,082  $     67,634
ADVANCES FROM AFFILIATE...............................................................        33,000            --
INCOME TAXES PAYABLE..................................................................            --         3,575
                                                                                        ------------  ------------
    TOTAL LIABILITIES.................................................................       412,082        71,209
                                                                                        ------------  ------------
COMMITMENTS AND CONTINGENCIES
Common stock, $.0001 par value, 249,875 shares subject to possible conversion, at
  conversion value....................................................................     1,297,301     1,239,380
                                                                                        ------------  ------------
STOCKHOLDERS' EQUITY:
Preferred stock, $.01 par value, 5,000 shares authorized, no shares issued or
  outstanding.........................................................................            --            --
Common stock, $.0001 par value, 20,000,000 shares authorized, 1,625,125 shares issued
  and outstanding (excluding 249,875 shares subject to possible conversion)...........           163           163
Additional paid-in capital............................................................     5,104,711     5,162,632
Deficit accumulated during the development stage......................................      (324,354)       (8,363)
                                                                                        ------------  ------------
    TOTAL STOCKHOLDERS' EQUITY........................................................     4,780,520     5,154,432
                                                                                        ------------  ------------
    TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY........................................  $  6,489,903  $  6,465,021
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>

                See Accompanying Notes to Financial Statements.

                                      F-21
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                            STATEMENTS OF OPERATIONS

<TABLE>
<CAPTION>
                                                      FOR THE YEAR ENDED JULY  FROM MAY 30, 1996
                                                                31,                 (DATE OF         CUMULATIVE
                                                      -----------------------      INCEPTION)         AMOUNTS
                                                         1998         1997      TO JULY 31, 1996   FROM INCEPTION
                                                      -----------  ----------  ------------------  --------------
<S>                                                   <C>          <C>         <C>                 <C>
REVENUE.............................................  $        --  $       --     $         --      $         --
                                                      -----------  ----------         --------     --------------
EXPENSES:
    General and administrative......................      612,237     192,489           15,000           819,726
                                                      -----------  ----------         --------     --------------
OTHER INCOME:
    Interest and dividends..........................      296,246     202,701               --           498,947
                                                      -----------  ----------         --------     --------------
OPERATING (LOSS) INCOME.............................     (315,991)     10,212          (15,000)         (320,779)
PROVISION FOR INCOME TAXES..........................           --       3,575               --             3,575
                                                      -----------  ----------         --------     --------------
NET (LOSS) INCOME...................................  $  (315,991) $    6,637     $    (15,000)     $   (324,354)
                                                      -----------  ----------         --------     --------------
                                                      -----------  ----------         --------     --------------
NET (LOSS) INCOME PER COMMON SHARE--BASIC AND
  DILUTED...........................................  $      (.17) $       --     $       (.02)
                                                      -----------  ----------         --------
                                                      -----------  ----------         --------
WEIGHTED AVERAGE NUMBER OF COMMON SHARES
  OUTSTANDING-- BASIC AND DILUTED...................    1,875,000   1,515,000          625,000
                                                      -----------  ----------         --------
                                                      -----------  ----------         --------
</TABLE>

                See Accompanying Notes to Financial Statements.

                                      F-22
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                            STATEMENTS OF CASH FLOWS

<TABLE>
<CAPTION>
                                                     FOR THE YEAR ENDED JULY    FROM MAY 30, 1996
                                                               31,                   (DATE OF         CUMULATIVE
                                                    --------------------------      INCEPTION)         AMOUNTS
                                                       1998          1997        TO JULY 31, 1996   FROM INCEPTION
                                                    -----------  -------------  ------------------  --------------
<S>                                                 <C>          <C>            <C>                 <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net (loss) income...............................  $  (315,991) $       6,637     $    (15,000)     $   (324,354)
CHANGES IN CERTAIN ASSETS AND LIABILITIES:
  Increase in accrued expenses....................      311,448         92,634               --           404,082
  (Decrease) increase in income taxes payable.....       (3,575)         3,575               --                --
                                                    -----------  -------------         --------     --------------
      NET CASH (USED IN) PROVIDED BY OPERATING
        ACTIVITIES................................       (8,118)       102,846          (15,000)           79,728
                                                    -----------  -------------         --------     --------------

CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from issuance of common stock..........           --      6,402,112               63         6,402,175
  Advances from affiliate.........................       33,000         55,417           40,500           128,917
  Repayment to affiliate..........................           --        (95,917)              --           (95,917)
  Deferred registration costs.....................           --             --          (25,000)          (25,000)
                                                    -----------  -------------         --------     --------------
      NET CASH PROVIDED BY FINANCING ACTIVITIES...       33,000      6,361,612           15,563         6,410,175
                                                    -----------  -------------         --------     --------------

CASH FLOWS FROM INVESTING ACTIVITIES:
  (Increase) in restricted cash and investments...     (291,219)    (6,198,488)              --        (6,489,707)
                                                    -----------  -------------         --------     --------------
NET (DECREASE) INCREASE IN CASH AND CASH
  EQUIVALENTS.....................................     (266,337)       265,970              563               196
CASH AND CASH EQUIVALENTS, beginning of period....      266,533            563               --                --
                                                    -----------  -------------         --------     --------------
CASH AND CASH EQUIVALENTS, end of period..........  $       196  $     266,533     $        563      $        196
                                                    -----------  -------------         --------     --------------
                                                    -----------  -------------         --------     --------------
</TABLE>

                See Accompanying Notes to Financial Statements.

                                      F-23
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

             STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT)

                          FOR THE PERIOD MAY 30, 1996
                   (DATE OF INCEPTION) THROUGH JULY 31, 1996
               AND EACH OF THE YEARS ENDED JULY 31, 1998 AND 1997

<TABLE>
<CAPTION>
                                                                                       DEFICIT
                                               COMMON STOCK         ADDITIONAL   ACCUMULATED DURING
                                          -----------------------    PAID-IN       THE DEVELOPMENT
                                            SHARES     PAR VALUE     CAPITAL            STAGE            TOTAL
                                          ----------  -----------  ------------  -------------------  ------------
<S>                                       <C>         <C>          <C>           <C>                  <C>

Issuance of stock to original founders
  for cash, at par value................     625,000   $      63   $         --     $          --     $         63

Net (loss) for the period May 30, 1996
  (date of inception) through July 31,
  1996..................................          --          --             --           (15,000)         (15,000)
                                          ----------       -----   ------------        ----------     ------------

Balance, July 31, 1996..................     625,000          63             --           (15,000)         (14,937)

Issuance of units to public, net of
  shares subject to possible
  conversion............................   1,000,125         100      5,162,632                --        5,162,732

Net income for the year ended
  July 31, 1997.........................          --          --             --             6,637            6,637
                                          ----------       -----   ------------        ----------     ------------

Balance, July 31, 1997..................   1,625,125         163      5,162,632            (8,363)       5,154,432

Net (loss) for the year ended
  July 31, 1998.........................          --          --             --          (315,991)        (315,991)

Increase in value attributable to common
  shares subject to possible
  conversion............................          --          --        (57,921)               --          (57,921)
                                          ----------       -----   ------------        ----------     ------------

Balance, July 31, 1998..................   1,625,125   $     163   $  5,104,711     $    (324,354)    $  4,780,520
                                          ----------       -----   ------------        ----------     ------------
                                          ----------       -----   ------------        ----------     ------------
</TABLE>

                See Accompanying Notes to Financial Statements.

                                      F-24
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                         NOTES TO FINANCIAL STATEMENTS

NOTE 1--ORGANIZATION AND OPERATIONS

    Unity First Acquisition Corp. ("Unity") was incorporated in the State of
Delaware on May 30, 1996 to serve as a vehicle to effect a merger, exchange of
capital stock, asset acquisition or other similar business combination (a
"Business Combination"). Unity is currently in the development stage. All
activity of Unity to date relates to its formation, fund-raising, and search to
effect a Business Combination.

NOTE 2--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    UTILIZATION OF ESTIMATES

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

    NET INCOME (LOSS) PER COMMON SHARE

    Net income (loss) per common share is computed based on the weighted average
number of common shares outstanding and common stock equivalents, if not
anti-dilutive.

    In 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards ("SFAS") No. 128, "Earnings per Share". This
statement establishes standards for computing and presenting earnings per share
("EPS"), replacing the presentation of primary EPS with a presentation of Basic
EPS. For entities with complex capital structures, the statement requires the
dual presentation of both Basic EPS and Diluted EPS on the face of the statement
of operations. Under this new standard, Basic EPS is computed based on the
weighted average number of shares actually outstanding during the year. Diluted
EPS includes the effect of potential dilution from the exercise of outstanding
dilutive stock options and warrants into common stock using the treasury stock
method. SFAS No. 128 is effective for financial statements issued for periods
ending after December 15, 1997, and early application is not permitted. The
adoption of this statement did not have a material effect on Unity's financial
position or on the results of operations.

NOTE 3--OFFERING OF SECURITIES

    On November 12, 1996, Unity completed its initial public offering (the
"Offering") consisting of the sale of 1,250,000 units (the "Units"). Each Unit
consisted of one share of Unity's Common Stock ("Common Stock"), $.0001 par
value, one Class A Redeemable Warrant (the "A Warrants") and one Class B
Redeemable Warrant (the "B Warrants"). Each A Warrant and B Warrant entitles the
holder to purchase from Unity one share of Common Stock at an exercise price of
$5.50 and $7.50, respectively, commencing on the later of a Business Combination
or November 12, 1997. The A Warrants and B Warrants are redeemable, each as a
class, in whole and not in part, at the option of Unity and with the consent of
the managing underwriter ("Underwriter") upon 30 days notice at any time after
the Warrants become exercisable, only in the event that the reported high bid
price of the Common Stock is at least $8.50 per share, with respect to the Class
A Warrants, and $10.50 per share, with respect to the Class B Warrants for the
20 consecutive trading days immediately prior to notice of redemption, at a
price of $.05 per A Warrant or B Warrant. The Warrants are immediately separable
and transferable.

                                      F-25
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 3--OFFERING OF SECURITIES (CONTINUED)
In connection with the Offering, Unity granted the Underwriter an option,
exercisable within 45 business days from November 12, 1996, to purchase up to
187,500 additional Units at $6.00 per unit. This option, which was solely for
the purpose of covering over-allotments, was not exercised by the Underwriter
either in whole or in part prior to its expiration date. None of the A and B
Warrants have been exercised through July 31, 1998.

    Net proceeds of the Offering to Unity including the purchase of warrants by
the Underwriter, discussed below, were $6,402,112, after deducting related
expenses. Ninety percent (90%) of the net proceeds are held in an interest
bearing Trust Fund until the earlier of (i) written notification by Unity of its
need for all or substantially all of the net proceeds for the purpose of
implementing or facilitating the implementation of a Business Combination or
(ii) the liquidation of Unity (See Note 10).

    Unity's Certificate of Incorporation requires that in the event that Unity
does not effect a Business Combination within eighteen months from the date of
the Offering, Unity will be dissolved and Unity will distribute to all Public
Stockholders in proportion to their respective equity interests in Unity, an
aggregate sum equal to Unity's book value, calculated as of the approval date of
such proposal. In this regard, Unity's Initial Stockholders, including all of
the officers and directors of Unity, have agreed to waive their respective
rights to participate in any such liquidation distribution (See Note 10).

    All of Unity's Initial Stockholders, including all of its officers and
directors, have agreed to vote their respective shares of Common Stock in
accordance with the vote of the majority of all non-affiliated future
stockholders of Unity with respect to a Business Combination. In addition, Unity
stock owned by all of the executive officers and directors of Unity, their
affiliates and by all persons owning 5% or more of the currently outstanding
shares of Common Stock was placed in escrow until the earlier of (i) the
occurrence of a Business Combination or (ii) 18 months from the date of the
Offering. During the escrow period, such stockholders are not able to sell or
otherwise transfer their respective shares of Common Stock, but will retain all
other rights as stockholders of Unity, including, without limitation, the right
to vote such shares of Common Stock.

    In connection with the Offering, Unity sold to the Underwriter and its
designees, for $100, warrants (the "Underwriter's Warrants") to purchase up to
125,000 Units at an exercise price of $6.60 per Unit. The Underwriter's Warrants
will be exercisable for a period of five years commencing on November 12, 1996.
The Underwriter's Warrants are not redeemable and have not been exercised.

NOTE 4--RESTRICTED CASH AND INVESTMENTS

    Unity, pursuant to the terms of the Offering, placed $6,007,500 as of
November 19, 1996, in a trust account which was primarily invested in a
short-term U.S. Government Security. These funds are subject to release upon the
earlier of (i) written notification by Unity of its need for all or
substantially all of the net proceeds for the purpose of implementing or
facilitating the implementation of a Business Combination or (ii) the
liquidation of Unity (See Note 10).

NOTE 5--CAPITAL STOCK

    Unity's Certificate of Incorporation authorizes the issuance of 20,000,000
shares of Common Stock. There are 14,862,500 authorized but unissued shares of
Common Stock available for issuance (after appropriate reserves for the issuance
of Common Stock in connection with the Class A Redeemable

                                      F-26
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 5--CAPITAL STOCK (CONTINUED)
Warrants and Class B Redeemable Warrants, the Underwriters' Warrants, the
executive officers and directors' Class A Warrants and Class B Warrants, and
future grants under Unity's 1996 Stock Option Plan). Unity's Board of Directors
has the power to issue any or all of the future grants under the Company's 1996
Stock Option Plan. Unity's Board of Directors has the power to issue any or all
of the authorized but unissued Common Stock without stockholder approval.

    Unity currently has no commitments to issue any shares of Common Stock other
than as described in the Offering; however, Unity will, in all likelihood, issue
a substantial number of additional shares in connection with a Business
Combination (See Note 10). To the extent that additional shares of Common Stock
are issued, dilution to the interests of Unity's stockholders participating in
the Offering will occur.

    The Board of Directors of Unity is empowered, without stockholder approval,
to issue up to 5,000 shares of "blank check" preferred stock (the "Preferred
Stock") with dividend, liquidation, conversion, voting or other rights which
could adversely affect the voting power or other rights of the holders of
Unity's Common Stock. To date, no shares of preferred stock have been issued.

NOTE 6--RELATED PARTY TRANSACTIONS

    The Chairman of the Board of Directors and the President of Unity are
principal shareholders, officers and directors of Unity Venture Capital
Associates Ltd. ("Venture") which owns shares in Unity. Beginning June 1, 1996,
commensurate with Unity's activities primarily related to the Offering, Unity
agreed to pay Venture a monthly fee of $7,500 for general and administrative
services, including the use of office space in premises occupied by Venture. At
July 31, 1998, Unity owed $33,000 to Venture for administrative services.

    Through July 31, 1996, Unity had obtained advances totaling $25,500 from
Venture to cover expenses related to the Offering. These advances were repaid
out of the proceeds of the Offering in 1997.

NOTE 7--STOCK OPTION PLAN

    On May 30, 1996, Unity's Board of Directors approved a stock option plan
(the "Plan"). The Plan, which is subject to shareholder approval, provides for
issuance of up to 187,500 options (the "Options") to acquire shares of Unity's
Common Stock.

    The Options are intended to qualify either as incentive stock options
("Incentive Stock Options") within the meaning of Section 422 of the Internal
Revenue Code of 1986 or as options which are not intended to meet the
requirements of such section ("Nonstatutory Stock Options"). The Options may be
granted under the Plan to persons who, in the case of Incentive Stock Options,
are key employees (including officers) of the Company, or, in the case of
Nonstatutory Stock Options, are key employees (including officers) and
nonemployee directors of the Company, except that Nonstatutory Stock Options may
not be granted to a holder of more than 10% of the total voting power of Unity.

    The exercise price of all Incentive Stock Options granted under the Plan
must be at least equal to the fair market value of such shares on the date of
grant or, in the case of Incentive Stock Options granted to the holder of 10% or
more of Unity's Common Stock, at least 110% of the fair market value of such
shares on the date of grant. The exercise price of all Nonstatutory Stock
Options granted

                                      F-27
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 7--STOCK OPTION PLAN (CONTINUED)
under the Plan shall be determined by the Board of Directors of Unity at the
time of grant. The maximum exercise period for which the Options may be granted
is ten years from the date of grant (five years in the case of Incentive Stock
Options granted to an individual owning more than 10% of Unity's Common Stock.)
The aggregate fair market value (determined at the date of the option grant) of
such shares with respect to which Incentive Stock Options are exercisable for
the first time by the holder of the option during any calendar year shall not
exceed $100,000.

    The FASB issued Statement of Financial Accounting Standards No. 123,
"Accounting for Stock Based Compensation" ("SFAS 123"), which requires companies
either to reflect in their financial statements or reflect as supplemental
disclosure the impact on earnings and earnings per share of the fair value of
stock based compensation using certain pricing models for the option component
of stock option plans. As of July 31, 1998, no options have been granted under
the Plan. Disclosure, as required by SFAS 123, will be made upon the issuance of
options.

NOTE 8--INCOME TAXES

    Income taxes are accounted for in accordance with Statement of Financial
Accounting Standards No. 109, "Accounting for Income Taxes." Under this method,
deferred income taxes are determined based on differences between the tax bases
of assets and liabilities and their financial reporting amounts at each year
end, and are measured based on enacted tax rates and laws that will be in effect
when the differences are expected to reverse. Valuation allowances are
established, when necessary, to reduce deferred tax assets to the amount
expected to be realized.

NOTE 9--CONTINGENCY

    Unity has agreed to indemnify the Underwriter against certain liabilities,
including liabilities under the Securities Act.

NOTE 10--PENDING ACQUISITION

    On May 6, 1998, Unity entered into a letter of intent to effectuate a
Business Combination ("Merger") with Worlds, Inc. ("Worlds"), a company engaged
in developing music-oriented content applications for its proprietary 3D
Internet technology for consumer markets, as well as developing select business
oriented applications. On June 25, 1998, Unity and Worlds entered into a
definitive Agreement and Plan of Merger and Reorganization (the "Merger
Agreement") to effectuate the Merger.

    On October 29, 1998, Unity's stockholders, at a special meeting convened to
consider whether to approve or reject the Merger contemplated by the Merger
Agreement, rejected the Merger.

    As a consequence of the rejection of the Worlds Merger by the Unity Public
Stockholders, Article SEVENTH, paragraph (c) of Unity's Certificate of
Incorporation would have required the liquidation and dissolution of Unity (the
"Liquidation") no later than January 11, 1999. Had such Liquidation taken place
on that date, the Unity Public Stockholders, collectively, would have received a
liquidating distribution representing their respective pro rata interest in a
trust fund established for their benefit upon the consummation of the IPO, which
currently approximates $6.5 million.

                                      F-28
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 10--PENDING ACQUISITION (CONTINUED)
    On December 10, 1998, Unity entered into a letter of intent to effectuate a
Business Combination with GraphOn Corporation, a privately owned developer and
marketer of proprietary "thin client" software that enables a diverse range of
desktop computing devices ("desktops") to easily access and utilize UNIX
applications from an location, over both fast networks and slow internet
connections.

    Unity's Board of Directors has unanimously concluded that a Business
Combination with GraphOn would be in the best interests of both Unity and its
stockholders, including the Unity Public Stockholders. Consequently, Unity's
Board of Directors has sought and obtained an opinion from special Delaware
counsel to the effect that such Article SEVENTH, paragraph (c), which attempts
to waive Unity's statutory right to amend the Unity Certificate of
Incorporation, is contrary to Delaware law and cannot prevent Unity and its
stockholders from amending the Unity Certificate of Incorporation.

    Subject to its submission under the Securities Exchange Act of 1934, as
amended, of proxy solicitation materials, Unity's Board of Directors intends to
seek the approval of the Unity Public Stockholders to (i) amend the Unity
Certificate of Incorporation to remove the provision therein that would have
required Unity to commence the Liquidation as a consequence of its inability to
consummate a Business Combination within the period defined by Article SEVENTH,
paragraph (c) of the Unity Certificate of Incorporation and, if such approval is
obtained, to (ii) consider and vote upon a proposal to approve Unity's Business
Combination with GraphOn. There can be no assurance that the Unity Stockholders
will approve the proposed amendment to the Certificate of Incorporation, or the
proposed Business Combination with GraphOn Corporation.

    The proposed amendment to the Unity Certificate of Incorporation will not
affect the right of any Unity Public Stockholders to convert his shares of Unity
Common Stock into cash, as provided in Article SEVENTH of the Unity Certificate
of Incorporation, should such Unity Public Stockholder object to the GraphOn
Business Combination and such Business Combination is approved by a majority in
equity interest of the Unity Public Stockholders and thereafter consummated.

    Depending upon the voting of the Unity Public Stockholders as to the
amendment to the Unity Cerficate of Incorporation or the Business Combination
with GraphOn, the Company may liquidate. The accompanying financial statements
have not been presented on a liquidation basis of accounting as the Company has
not decided to liquidate. Additionally, it is not expected that the carrying
value of the Company's assets and liabilities would be materially different if
presented under a liquidation basis based on the nature of such assets and
liabilities.

                                      F-29
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                                 BALANCE SHEETS


<TABLE>
<CAPTION>
                                                                                                       JULY 31,
                                                                                    APRIL 30, 1999       1998
                                                                                    ---------------  ------------
<S>                                                                                 <C>              <C>
                                                                                      (UNAUDITED)
                                                     ASSETS
CASH AND CASH EQUIVALENTS.........................................................   $         395    $      196
RESTRICTED CASH AND INVESTMENTS...................................................       6,658,017     6,489,707
                                                                                    ---------------  ------------
        TOTAL ASSETS..............................................................   $   6,658,412    $6,489,903
                                                                                    ---------------  ------------
                                                                                    ---------------  ------------

                                      LIABILITIES AND SHAREHOLDERS' EQUITY
LIABILITIES:
    ACCRUED EXPENSES..............................................................   $     692,395    $  379,082
    ADVANCES FROM AFFILIATE.......................................................         114,940        33,000
                                                                                    ---------------  ------------
        TOTAL LIABILITIES.........................................................         807,335       412,082
                                                                                    ---------------  ------------
COMMITMENTS AND CONTINGENCIES:
Common stock, $.0001 par value, 249,875 shares subject to possible conversion, at
  conversion value................................................................       1,330,937     1,297,301
                                                                                    ---------------  ------------
SHAREHOLDERS' EQUITY:
Preferred stock, $.01 par value, 5,000 shares authorized, no shares issued or
  outstanding.....................................................................              --            --
Common stock, $.0001 par value, 20,000,000 shares authorized, 1,625,125 shares
  issued and outstanding (excluding 249,875 shares subject to possible
  conversion).....................................................................             163           163
Additional paid-in capital........................................................       5,071,075     5,104,711
Deficit accumulated during the development stage..................................        (551,098)     (324,354)
                                                                                    ---------------  ------------
        TOTAL SHAREHOLDERS' EQUITY................................................       4,520,140     4,780,520
                                                                                    ---------------  ------------
        TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY................................   $   6,658,412    $6,489,903
                                                                                    ---------------  ------------
                                                                                    ---------------  ------------
</TABLE>


                  See Selected Notes to Financial Statements.

                                      F-30
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                      STATEMENTS OF OPERATIONS (UNAUDITED)


<TABLE>
<CAPTION>
                                                            FOR THE                     FOR THE
                                                       NINE MONTHS ENDED           THREE MONTHS ENDED
                                                           APRIL 30,                   APRIL 30,             CUMULATIVE
                                                  ---------------------------  --------------------------     AMOUNTS
                                                      1999           1998          1999          1998      FROM INCEPTION
                                                  -------------  ------------  ------------  ------------  --------------
<S>                                               <C>            <C>           <C>           <C>           <C>
REVENUE.........................................  $          --  $         --  $         --  $         --   $         --
                                                  -------------  ------------  ------------  ------------  --------------
EXPENSES:
  General and administrative....................        427,391       236,265        48,941       126,165      1,247,117
OTHER INCOME:
  Interest and dividends........................        200,647       222,268        61,232        72,674        699,594
                                                  -------------  ------------  ------------  ------------  --------------
OPERATING (LOSS) INCOME.........................       (226,744)      (13,997)       12,291       (53,491)      (547,523)
PROVISION FOR INCOME TAXES......................             --        21,293            --        12,325          3,575
                                                  -------------  ------------  ------------  ------------  --------------
NET (LOSS) INCOME...............................  $    (226,744) $    (35,290) $     12,291  $    (65,816)  $   (551,098)
                                                  -------------  ------------  ------------  ------------  --------------
                                                  -------------  ------------  ------------  ------------  --------------
NET (LOSS) INCOME PER COMMON SHARE--BASIC AND
  DILUTED.......................................  $        (.12) $       (.02) $        .01  $        .04
                                                  -------------  ------------  ------------  ------------
                                                  -------------  ------------  ------------  ------------
WEIGHTED AVERAGE NUMBER OF
  COMMON SHARES OUTSTANDING.....................      1,875,000     1,875,000     1,875,000     1,875,000
                                                  -------------  ------------  ------------  ------------
                                                  -------------  ------------  ------------  ------------
</TABLE>


                  See Selected Notes to Financial Statements.

                                      F-31
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

                      STATEMENTS OF CASH FLOWS (UNAUDITED)


<TABLE>
<CAPTION>
                                                                                  FOR THE
                                                                                NINE MONTHS
                                                                                   ENDED
                                                                                 APRIL 30,            CUMULATIVE
                                                                          ------------------------     AMOUNTS
                                                                             1999         1998      FROM INCEPTION
                                                                          -----------  -----------  --------------
<S>                                                                       <C>          <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net (loss) income.....................................................  $  (226,744) $   (35,290)  $   (551,098)
CHANGES IN CERTAIN ASSETS AND LIABILITIES:
Increase (decrease) in accrued expenses.................................      313,313       25,457        717,395
                                                                          -----------  -----------  --------------
      NET CASH PROVIDED BY OPERATING ACTIVITIES.........................       86,569       (9,833)       166,297
                                                                          -----------  -----------  --------------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from issuance of common stock................................           --           --      6,402,175
  Advances from affiliate...............................................       81,940           --        210,857
  Repayment to affiliate................................................           --           --        (95,917)
  Deferred registration costs...........................................           --           --        (25,000)
                                                                          -----------  -----------  --------------
      NET CASH PROVIDED BY FINANCING ACTIVITIES.........................       81,940           --      6,492,115
                                                                          -----------  -----------  --------------
CASH FLOWS FROM INVESTING ACTIVITIES:
  (Increase) in restricted cash and investments.........................     (168,310)    (217,357)    (6,658,017)
                                                                          -----------  -----------  --------------
NET INCREASE (DECREASE) IN CASH AND
  CASH EQUIVALENTS......................................................          199     (227,190)           395
CASH AND CASH EQUIVALENTS, beginning of period..........................          196      266,533             --
                                                                          -----------  -----------  --------------
CASH AND CASH EQUIVALENTS, end of period................................  $       395  $    39,343   $        395
                                                                          -----------  -----------  --------------
                                                                          -----------  -----------  --------------
</TABLE>


                  See Selected Notes to Financial Statements.

                                      F-32
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

            STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED)


                    FOR THE NINE MONTHS ENDED APRIL 30, 1999



<TABLE>
<CAPTION>
                                                                                         (DEFICIT)
                                                                                        ACCUMULATED
                                                      COMMON STOCK         ADDITIONAL    DURING THE
                                                 -----------------------    PAID-IN     DEVELOPMENT
                                                   SHARES     PAR VALUE     CAPITAL        STAGE         TOTAL
                                                 ----------  -----------  ------------  ------------  ------------
<S>                                              <C>         <C>          <C>           <C>           <C>
Balance, July 31, 1998.........................   1,875,000   $     163   $  5,104,711   $ (324,354)  $  4,780,520
Net loss for the six months ended
  January 31, 1999.............................          --          --             --     (226,744)      (226,744)
Increase in value attributable to common shares
  subject to possible conversion...............          --          --        (33,636)          --        (23,636)
                                                 ----------       -----   ------------  ------------  ------------
Balance, January 31, 1999......................   1,875,000   $     163   $  5,071,075   $ (551,098)  $  4,520,140
                                                 ----------       -----   ------------  ------------  ------------
                                                 ----------       -----   ------------  ------------  ------------
</TABLE>


                  See Selected Notes to Financial Statements.

                                      F-33
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

               SELECTED NOTES TO FINANCIAL STATEMENTS (UNAUDITED)

1. FINANCIAL STATEMENTS


    The financial statements have been prepared by Unity First Acquisition Corp.
("Unity"), without audit. In the opinion of management, all adjustments (which
include only normal recurring adjustments) necessary to present fairly the
financial position, results of operations and cash flows at April 30, 1999 and
for all periods presented have been made. The results of operations for the
period ended April 30, 1999 are not necessarily indicative of the operating
results for a full year.


    Certain information and footnote disclosures prepared in accordance with
general accepted accounting principles and normally included in the financial
statements have been condensed or omitted. It is suggested that these financial
statements be read in conjunction with the financial statements and notes
included in Unity's annual report Form 10-K for the year ended July 31, 1998.

2. ORGANIZATION AND OPERATIONS

    Unity was incorporated in the State of Delaware on May 30, 1996 to serve as
a vehicle to effect a merger, exchange of capital stock, asset acquisition or
other similar business combination (a "Business Combination"). Unity is
currently in the development stage. All activity of Unity to date relates to its
formation, fund-raising, and search to effect a Business Combination.

3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    UTILIZATION OF ESTIMATES

    The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

    NET INCOME (LOSS) PER COMMON SHARE

    Net income (loss) per common share is computed based on the weighted average
number of common shares outstanding and common stock equivalents, if not
anti-dilutive.

    In 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards ("SFAS") No. 128, "Earnings per Share". This
statement establishes standards for computing and presenting earnings per share
("EPS"), replacing the presentation of primary EPS with a presentation of Basic
EPS. For entities with complex capital structures, the statement requires the
dual presentation of both Basic EPS and Diluted EPS on the face of the statement
of operations. Under this new standard, Basic EPS is computed based on the
weighted average number of shares actually outstanding during the year. Diluted
EPS includes the effect of potential dilution from the exercise of outstanding
dilutive stock options and warrants into common stock using the treasury stock
method. SFAS No. 128 is effective for financial statements issued for periods
ending after December 15, 1997, and early application is not permitted. The
adoption of this statement did not have a material effect on Unity's financial
position or on the results of its operations.

                                      F-34
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

         SELECTED NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

4. RESTRICTED CASH AND INVESTMENTS

    Unity, pursuant to the terms of its initial public offering (the
"Offering"), placed $6,007,500 as of November 19, 1996, in a trust account which
was primarily invested in a short-term U.S. Government Security. These funds are
subject to release upon the earlier of (i) written notification by Unity of its
need for all or substantially all of the net proceeds for the purpose of
implementing or facilitating the implementation of a Business Combination or
(ii) the liquidation of Unity (See note 5).

5. PENDING ACQUISITION

    On May 6, 1998, Unity entered into a letter of intent to effectuate a
Business Combination ("Merger") with Worlds, Inc. ("Worlds"), a company engaged
in developing music-oriented content applications for its proprietary 3D
Internet technology for consumer markets, as well as developing select business
oriented applications. On June 25, 1998, Unity and Worlds entered into a
definitive Agreement and Plan of Merger and Reorganization (the "Merger
Agreement") to effectuate the Merger.

    On October 29, 1998, Unity's stockholders, at a special meeting convened to
consider whether to approve or reject the Merger contemplated by the Merger
Agreement, rejected the Merger.

    As a consequence of the rejection of the Worlds Merger by the Unity Public
Stockholders, Article SEVENTH, paragraph (c) of Unity's Certificate of
Incorporation would have required the liquidation and dissolution of Unity (the
"Liquidation") no later than January 11, 1999. Had such Liquidation taken place
on that date, the Unity Public Stockholders, collectively, would have received a
liquidating distribution representing their respective pro rata interest in a
trust fund established for their benefit upon the consummation of the IPO, which
currently approximates $6.6 million.

    On December 10, 1998, Unity entered into a letter of intent to effectuate a
Business Combination with GraphOn Corporation ("GraphOn"), a privately owned
developer and marketer of proprietary "thin client" software that enables a
diverse range of desktop computing devices ("desktops") to easily access and
utilize UNIX applications from an location, over both fast networks and slow
internet connections.

    Unity's Board of Directors has unanimously concluded that a Business
Combination with GraphOn would be in the best interests of both Unity and its
stockholders, including the Unity Public Stockholders. Consequently, Unity's
Board of Directors has sought and obtained an opinion from special Delaware
counsel to the effect that such Article SEVENTH, paragraph (c), which attempts
to waive Unity's statutory right to amend the Unity Certificate of
Incorporation, is contrary to Delaware law and cannot prevent Unity and its
stockholders from amending the Unity Certificate of Incorporation.

    Subject to its submission under the Securities Exchange Act of 1934, as
amended, of proxy solicitation material, Unity's Board of Directors intends to
seek the approval of the Unity Public Stockholders to (i) amend the Unity
Certificate of Incorporation to remove the provision therein that would have
required Unity to commence the Liquidation as a consequence of its inability to
consummate a Business Combination within the period defined by Article SEVENTH,
paragraph (c) of the Unity Certificate of Incorporation and, if such approval is
obtained, to (ii) consider and vote upon a proposal to approve Unity's Business
Combination with GraphOn. There can be no assurance that the Unity Stockholders
will approve the proposed amendment to the Certificate of Incorporation, or the
proposed Business Combination with GraphOn Corporation.

                                      F-35
<PAGE>
                         UNITY FIRST ACQUISITION CORP.
                          (A DEVELOPMENT STAGE ENTITY)

         SELECTED NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

5. PENDING ACQUISITION (CONTINUED)
    The proposed amendment to the Unity Certificate of Incorporation will not
affect the right of any Unity Public Stockholder to convert his shares of Unity
Common Stock into cash, as provided in Article SEVENTH of the Unity Certificate
of Incorporation, should such Unity Public Stockholder object to the GraphOn
Business Combination and such Business Combination is approved by a majority in
equity interest of the Unity Public Stockholders and thereafter consummated.

    Depending upon the voting of the Unity Public Stockholders as to the
amendment to the Unity Certificate of Incorporation or the Business Combination
with GraphOn, Unity may liquidate. The accompanying financial statements have
not been presented on a liquidation basis of accounting as Unity has not decided
to liquidate. Additionally, it is not expected that the carrying value of
Unity's assets and liabilities would be materially different if presented under
a liquidation basis based on the nature of such assets and liabilities.

                                      F-36
<PAGE>
                                                                       EXHIBIT A

                             EXCERPTS FROM RESTATED
                          CERTIFICATE OF INCORPORATION
                        OF UNITY FIRST ACQUISITION CORP.

    SEVENTH: The following paragraphs (a) through (d) shall apply during the
period commencing upon the consummation of the Corporation's initial public
offering of securities ("IPO") and terminating upon the consummation of any
"Business Combination." ["and may not be amended during such period]. A
"Business Combination" shall mean the acquisition by the Corporation, whether by
merger, exchange of capital stock, asset or stock acquisition or other similar
type of transaction, of any business ("Target Business").

        (a) Prior to the consummation of any Business Combination, the
    Corporation shall submit such Business Combination to its stockholders for
    approval regardless of whether the Business Combination is of a type which
    normally would require such stockholder approval under the DGCL. In the
    event that the holders of a majority of the outstanding Voting Stock vote
    for the approval of the Business Combination, the Corporation shall be
    authorized to consummate the Business Combination; provided that the
    Corporation shall not consummate any Business Combination if 20% or more in
    interest of the holders of the public shares (as hereafter defined) exercise
    their conversion rights described in paragraph (b) below.

        (b) In the event that a Business Combination is approved in accordance
    with the above paragraph (a) and is consummated by the Corporation, any
    holder of shares of common stock issued in the IPO ("public shares") who
    voted against the Business Combination may demand that the Corporation
    convert his public shares into cash. If so demanded, the Corporation shall
    convert such public shares at a per-share conversation price equal to the
    quotient determined by dividing (i) the amount in the Trust Fund (as defined
    below), inclusive of any interest thereon, as of the record date for
    determination of stockholders entitled to vote on the Business Combination,
    by (ii) the number of public shares. "Trust Fund" shall mean that trust
    account established by the Corporation at the consummation of its IPO and
    into which certain net proceeds of the IPO are deposited.
        (c) In the event that the Corporation does not consummate a Business
    Combination [by the later of (i) 18 months after the consummation of the IPO
    or (ii) 24 months after the consummation of the IPO in the event that an
    agreement for a Business Combination was executed but was not consummated
    within such 18 month period (the later of such dates being referred to
    as)]WITH GRAPHON CORPORATION, A CALIFORNIA CORPORATION, BY JULY 31, 1999
    (the "Termination Date"), the officers of the Corporation shall take all
    such actions as may be necessary to dissolve and liquidate the Corporation
    within sixty days of the Termination Date. In the event that the Corporation
    is so dissolved and liquidated, liquidating distributions shall be made only
    with respect to the public shares and the Corporation shall pay no
    liquidating distributions with respect to any shares of common stock
    outstanding prior to the consummation of the IPO.

        (d) A holder of public shares shall be entitled to receive distributions
    from the Trust Fund only in the event of a liquidation of the Corporation or
    in the event he demands conversion of his shares in accordance with
    paragraph (b) above. In no other circumstances shall a holder of public
    shares have any right or interest of any kind in or to the Trust Fund.

    NINTH: The corporation reserves the right to amend, alter, change or repeal
any provision contained in this Certificate of Incorporation [(other than
provisions of Article SEVENTH, which may not be amended prior to consummation of
a Business Combination)] in the manner now or hereafter prescribed by law, and
all rights and powers conferred herein on stockholders, directors and officers
are subject to this reserved power.

                                      A-1
<PAGE>
                                                                       EXHIBIT B

                              AGREEMENT AND PLAN OF MERGER AND REORGANIZATION,
                              dated as of February 1, 1999 (this "Agreement"),
                              between UNITY FIRST ACQUISITION CORP., a Delaware
                              corporation ("Unity"), and GRAPHON CORPORATION, a
                              California corporation (the "Company").
                            ------------------------

    The Boards of Directors of Unity and the Company have unanimously approved
the merger of the Company with and into Unity pursuant to this Agreement (the
"Merger") and the other transactions contemplated hereby upon the terms and
subject to the conditions set forth herein.

    It is intended that the Merger shall qualify for federal income tax purposes
as a reorganization within the meaning of Section 368(a) of the Internal Revenue
Code of 1986, as amended (the "Code").

    Unity and the Company desire to make certain representations, warranties,
covenants and agreements in connection with the Merger.

    NOW, THEREFORE, in consideration of the foregoing premises and the
representations, warranties, covenants and agreements contained herein, the
parties hereto, intending to be legally bound hereby, agree as follows:

                                   ARTICLE I
                                   THE MERGER

    SECTION 1.1  THE MERGER.  Upon the terms and subject to the conditions of
this Agreement, at the Effective Time (as defined in Section 1.2 below), the
Company shall be merged with and into Unity in accordance with the provisions of
Section 252 of the Delaware General Corporation Law (the "DGCL") and of Sections
1100 and 1108 of the California Corporation Code (the "CCC") with the effect
provided in Sections 259 thru 261 of the DGCL and Section 1107 of the CCC, and
the separate existence of the Company shall thereupon cease. Unity shall be the
surviving corporation in the Merger (hereinafter sometimes referred to as
"Surviving Corporation") and shall continue to be governed by the laws of the
State of Delaware. Without limiting the generality of the foregoing, and subject
thereto, at the Effective Time of the Merger, (a) all assets and property of
every description, and every interest therein, wherever located, and the rights,
privileges, immunities, powers, franchises and authority, of a public as well as
of a private nature, of each of Unity and the Company, shall become assets and
property of the Surviving Corporation and (b) all liabilities and obligations of
Unity and the Company shall be vested in, and become the liabilities and
obligations of, the Surviving Corporation without further act or deed.

    SECTION 1.2  EFFECTIVE TIME OF THE MERGER.  The Merger shall become
effective at such time (the "Effective Time") as (a) a Certificate of Merger, in
the form set forth as Exhibit I hereto, is filed with the Secretary of State of
the State of Delaware, and (b) an Agreement of Merger, in the form set forth as
Exhibit II hereto, is filed with the Secretary of State of the State of
California (collectively, the "Merger Filings"). Such filings shall be made
simultaneously with or as soon as practicable after the closing of the
transactions contemplated by this Agreement in accordance with Section 3.5.

    SECTION 1.3  NAME CHANGE.  At the Effective Time, Unity shall change its
name to "GraphOn Corporation."

    SECTION 1.4  DISCLOSURE SCHEDULES.  Simultaneously with the execution of
this Agreement, (a) the Company shall deliver a schedule relating to the Company
(the "Company Disclosure Schedule"), and (b) Unity shall deliver a schedule
relating to Unity (the "Unity Disclosure Schedule" and collectively, with the
Company Disclosure Schedule, the "Disclosure Schedules") setting forth the
matters required to be set forth in the Disclosure Schedules as described
elsewhere in this Agreement. The Disclosure Schedules shall be deemed to be part
of this Agreement.

                                      B-1
<PAGE>
                                   ARTICLE II
                             SURVIVING CORPORATION

    SECTION 2.1  CERTIFICATE OF INCORPORATION.  The Certificate of Incorporation
of Unity as in effect immediately prior to the Effective Time shall be the
Certificate of Incorporation of the Surviving Corporation after the Effective
Time, until duly amended in accordance with the terms thereof and of the DGCL.

    SECTION 2.2  BY-LAWS.  The By-laws of Unity as in effect immediately prior
to the Effective Time shall be the By-laws of the Surviving Corporation after
the Effective Time, and thereafter may be amended in accordance with their terms
and as provided by the Certificate of Incorporation of the Surviving Corporation
and the DGCL.

    SECTION 2.3  DIRECTORS.  The directors of the Company at the Effective Time,
together with one (1) designee of the directors of Unity occupying such
positions immediately prior to the Effective Time, shall be the directors of the
Surviving Corporation, from and after the Effective Time, until their respective
successors have been duly elected or appointed and qualified or until death,
resignation or removal in accordance with the Certificate of Incorporation and
By-laws, as applicable, of the Surviving Corporation. Except as provided for in
the immediately preceding sentence, all of the directors of Unity immediately
prior to the Effective Time shall each resign such position as of the Effective
Time.

    SECTION 2.4  OFFICERS.  The officers of the Company at the Effective Time
shall, from and after the Effective Time, be the officers of the Surviving
Corporation until their respective successors have been duly elected or
appointed and qualified or until death, resignation or removal in accordance
with the Certificate of Incorporation and By-Laws, as applicable, of the
Surviving Corporation. The officers of Unity immediately prior to the Effective
Time shall each resign such position as of the Effective Time.

                                  ARTICLE III
                              CONVERSION OF SHARES

    SECTION 3.1  CONVERSION OF COMPANY SHARES IN THE MERGER.  At the Effective
Time, by virtue of the Merger and without any action on the part of any holder
of any capital stock of the Company:

    (a) each share of Common Stock, without par value, of the Company ("Company
       Common Stock"), issued and outstanding at the Effective Time, subject to
       the terms and conditions of this Agreement, shall be converted (except as
       provided in Sections 3.1(b) and 3.4), without any further action, into
       the right to receive, and become exchangeable for, 0.5576 shares (the
       "Exchange Ratio") of Common Stock, $.0001 par value, of Unity ("Unity
       Common Stock"), subject to the payment of cash adjustments in lieu of the
       issuance of fractional shares as provided in Section 3.3 of this
       Agreement; provided, that if, prior to the Effective Time, Unity should
       split, reclassify or combine Unity Common Stock, or pay or grant to any
       stockholders of Unity a stock dividend or other stock distribution in
       Unity Common Stock or rights to acquire Unity Common Stock, or otherwise
       change Unity Common Stock into any other securities, then the Exchange
       Ratio will be appropriately adjusted to reflect such split,
       reclassification, combination, stock dividend or other distribution;

    (b) each share of Company Common Stock, if any, owned by Unity or any
       subsidiary of Unity or the Company immediately prior to the Effective
       Time shall be cancelled and shall cease to exist from and after the
       Effective Time; and

    (c) All options (the "Company Options") outstanding, whether or not
       exercisable and whether or not vested, at the Effective Time, and whether
       or not granted pursuant to the Company's 1998

                                      B-2
<PAGE>
       Stock Option/Stock Issuance Plan (the "Company Stock Option Plan") shall
       remain outstanding following the Effective Time. At the Effective Time,
       the Company Options shall, by virtue of the Merger and without any
       further action on the part of the Company or the holders thereof, be
       assumed by Unity in such manner that Unity (i) is a corporation "assuming
       a stock option in a transaction to which Section 424(a) applies" within
       the meaning of Section 424 of the Internal Revenue Code of 1986, as
       amended (the "Code"), or (ii) to the extent that Section 424 of the Code
       does not apply to any such Company Options, would be such a corporation
       were Section 424 of the Code applicable to such Company Options. From and
       after the Effective Time, all references to the Company in the Company
       Stock Option Plan and the applicable stock option agreements issued
       thereunder shall be deemed to refer to Unity. Each Company Option assumed
       by Unity shall be exercisable upon the same terms and conditions as under
       the Company Stock Option Plan and the applicable stock option agreement
       issued thereunder, except that (A) each such Company Option shall be
       exercisable for that whole number of shares of Unity Common Stock
       (rounded down to the nearest whole share) into which the number of shares
       of Company Common Stock subject to such Company Option immediately prior
       to the Effective Time would be converted under Section 3.1 (a), and (B)
       the option price per share of Unity Common Stock shall be an amount equal
       to the option price per share of Company Common Stock subject to such
       Company Option in effect immediately prior to the Effective Time divided
       by the Exchange Ratio (the option price per share, as so determined,
       being rounded upward to the nearest full cent). No payment shall be made
       for fractional shares. Within 20 business days after the Effective Time,
       Unity will issue to each person who, immediately prior to the Effective
       Time was a holder of a Company Option, a document in form and substance
       reasonably satisfactory to the Company evidencing the foregoing
       assumption of such option by Unity.

    (d) All warrants issued by the Company to purchase shares of Company Common
       Stock (the "Company Warrants") outstanding, whether or not exercisable
       and whether or not vested, at the Effective Time shall remain outstanding
       following the Effective Time. At the Effective Time, the Company Warrants
       shall, by virtue of the Merger and without any further action on the part
       of the Company or the holders thereof, be assumed by Unity and each
       Company Warrant assumed by Unity shall be exercisable upon the same terms
       and conditions as under the applicable warrant agreements with respect to
       such Company Warrants, except that (A) each such Company Warrant shall be
       exercisable for that whole number of shares of Unity Common Stock (to the
       nearest whole share) into which the number of shares of Company Common
       Stock subject to such Company Warrant immediately prior to the Effective
       Time would be converted under Section 3.1 (a), and (B) the exercise price
       per share of Unity Common Stock shall be an amount equal to the exercise
       price per share of Company Common Stock subject to such Company Warrant
       in effect immediately prior to the Effective Time divided by the Exchange
       Ratio (the exercise price per share, as so determined, being rounded
       upward to the nearest full cent). From and after the Effective Time, all
       references to the Company in the respective warrant agreements shall be
       deemed to refer to Unity. No payment shall be made for fractional shares
       unless required by the respective terms of the Company Warrants.

    (e) All outstanding rights of the Company which it may hold immediately
       prior to the Effective Time to repurchase unvested shares of Company
       Common Stock (the "Repurchase Options") shall be assigned to Unity in the
       Merger and shall thereafter be exercisable by Unity upon the terms and
       conditions in effect immediately prior to the Effective Time, except that
       the shares purchasable pursuant to the Repurchase Options and the
       purchase price per shall be adjusted to reflect the Exchange Ratio.

                                      B-3
<PAGE>
    SECTION 3.2  EXCHANGE OF CERTIFICATES.

    (a) From and after the Effective Time, each holder of an outstanding
       certificate which immediately prior to the Effective Time represented
       shares of Company Common Stock (the "Company Certificates") shall cease
       to have any right as a stockholder of the Company and such holder's sole
       rights shall be to receive in exchange for such holder's Company
       Certificates, upon surrender thereof to an exchange agent selected by the
       Company (the "Exchange Agent"), a certificate or certificates
       representing the number of whole shares of Unity Common Stock which such
       holder is entitled to receive pursuant to Section 3.1 plus cash in lieu
       of fractional shares, as provided in Section 3.3 hereof. Notwithstanding
       any other provision of this Agreement, (i) until holders of Company
       Certificates theretofore representing shares of Company Common Stock have
       surrendered such certificates for exchange as provided herein, (A) no
       dividends shall be paid by the Company with respect to any shares
       represented by such Company Certificates and (B) no payment for
       fractional shares shall be made, provided, in each case, that upon
       surrender of such Company Certificates, the surrendering holder shall
       receive all such dividends and payments for fractional shares and (ii)
       without regard to when such Company Certificates are surrendered for
       exchange as provided herein, no interest shall be paid on any such
       dividend or payment for fractional shares. If any certificate for shares
       of Unity Common Stock is to be issued in a name other than that in which
       the certificate for shares of Company Common Stock surrendered in
       exchange therefor is registered, it shall be a condition of such exchange
       that the person requesting such exchange shall pay any transfer or other
       taxes required by reason of the issuance of certificates for such shares
       of Unity Common Stock in a name other than that of the registered holder
       of the certificate surrendered, or shall establish to the satisfaction of
       Unity that such tax has been paid or is not applicable. No transfers of
       Company Common Stock shall be made on the stock transfer books of the
       Company after the close of business on the day prior to the date of the
       Effective Time.

    (b) At or before the Effective Time, Unity shall make available to the
       Exchange Agent a sufficient number of certificates representing shares of
       Unity Common Stock required to effect the exchange referred to in Section
       3.2(a).

    (c) Promptly after the Effective Time, Unity shall cause the Exchange Agent
       to mail to each holder of record of the Company Certificates (i) a form
       letter of transmittal (which shall specify that delivery shall be
       effected, and risk of loss and title to the Company Certificates shall
       pass, only upon actual delivery of the Company Certificates to the
       Exchange Agent) and (ii) instructions for use in effecting the surrender
       of the Company Certificates in exchange for certificates representing
       shares of Unity Common Stock. Upon surrender of the Company Certificates
       for cancellation to the Exchange Agent, together with a duly executed
       letter of transmittal and such other documents as the Exchange Agent
       shall reasonably require, the holder of such Company Certificates shall
       be entitled to receive in exchange therefor one or more certificates
       representing that number of whole shares of Unity Common Stock into which
       the shares of Company Common Stock theretofore represented by the Company
       Certificates so surrendered shall have been converted pursuant to the
       provisions of Section 3.1, in addition to payment for any fractional
       share of Unity Common Stock, and the Company Certificates so surrendered
       shall forthwith be cancelled. Until so surrendered, the Company
       Certificates shall represent solely the right to receive the number of
       whole shares of Unity Common Stock that shall be issued in exchange for
       Company Common Stock and any cash in lieu of the fractional Unity Common
       Stock as contemplated by Section 3.3. Notwithstanding the foregoing,
       neither the Exchange Agent nor any party hereto shall be liable to a
       holder of shares of Company Common Stock for any shares of Unity Common
       Stock delivered to a public official as required by applicable abandoned
       property, escheat or similar laws. The

                                      B-4
<PAGE>
       Exchange Agent shall not be entitled to vote or exercise any rights of
       ownership with respect to Unity Common Stock held by it from time to time
       hereunder.

    SECTION 3.3  NO FRACTIONAL SHARES.  Notwithstanding any other provision of
this Agreement, no certificates or scrip for fractional shares of Unity Common
Stock shall be issued in the Merger and no Unity Common Stock dividend,
reclassification, stock split or interest shall be paid or have effect with
respect to any fractional interest in a share of Unity Common Stock, and such
fractional interests shall not entitle the owner thereof to vote or to any other
rights of a security holder. In lieu of any such fractional shares, each holder
of Company Common Stock who would otherwise have been entitled to receive a
fraction of a share of Unity Common Stock upon surrender of Company Certificates
for exchange pursuant to this Article III will be paid an amount in cash
therefor (without interest) equal to the average of the last reported sale
prices of Unity Common Stock on the Electronic Bulletin Board (the "Bulletin
Board") for each of the twenty consecutive trading days ending with the third
trading day prior to the Closing Date (as defined in Section 3.5) multiplied by
the fractional interest of such stockholder in a share of Unity Common Stock.
For purposes of determining whether and to what extent a particular stockholder
is entitled to receive cash adjustments pursuant to this Section 3.3, shares of
record held by such holder and represented by two or more Company Certificates
shall be aggregated.

    SECTION 3.4  DISSENTING SHARES.  Notwithstanding any provision of this
Agreement to the contrary, shares of Company Common Stock that are outstanding
immediately prior to the Effective Time and which are held by stockholders of
the Company who shall not have voted in favor of the Merger or consented thereto
in writing and who shall have demanded properly in writing the fair value for
such shares of Company Common Stock in accordance with Sections 1300-1312 of the
CCC (collectively, "Dissenting Stock") shall not be converted into or represent
the right to receive shares of Unity Common Stock. Such stockholders shall be
entitled to receive payment of the fair value of such shares of Dissenting Stock
held by them in accordance with the provisions of such Sections 1300-1312,
except that all Dissenting Stock held by stockholders who have failed to perfect
or who effectively shall have withdrawn or lost their rights to appraisal of
such shares of Dissenting Stock under such Sections 1300-1312 shall thereupon be
deemed to have been converted into and to have become exchangeable for, as of
the Effective Time, the right to receive shares of Unity Common Stock, without
any interest thereon, upon surrender, in the manner provided in Section 3.2, of
the Company Certificates that evidence such shares of Dissenting Stock.

    SECTION 3.5  CLOSING.  The closing (the "Closing") of the transactions
contemplated by this Agreement shall take place at the offices of Brobeck,
Phleger & Harrison LLP, Two Embarcadero Place, 2200 Geng Road, Palo Alto,
California 94303, on the third business day following the date on which the last
of the conditions set forth in Article VII hereof is fulfilled or waived, or at
such other time and place as Unity and the Company shall agree (the date on
which the closing occurs being the "Closing Date").

                                      B-5
<PAGE>
                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES
                                 OF THE COMPANY

    The Company hereby represents and warrants to Unity as follows (subject in
each case to such exceptions as are set forth or cross-referenced in the
attached Company Disclosure Schedule in the labeled section corresponding to the
caption of the representation or warranty to which such exceptions relate;
provided, however, that each exception shall be deemed to apply to any
representation of the Company to which it might reasonably apply):

    SECTION 4.1  ORGANIZATION AND QUALIFICATION.  The Company is a corporation
duly incorporated, validly existing and in good standing under the laws of the
State of California. The Company has all requisite corporate power to carry on
its business as it is now being conducted and is duly qualified to do business
as a foreign corporation and is in good standing in all jurisdictions as set
forth in Section 4.1 of the Company Disclosure Schedule, and to the Company's
knowledge, such jurisdictions are the only ones in which the properties owned,
leased or operated by the Company or the nature of the business conducted by the
Company makes such qualification necessary, except where the failure to qualify
(individually or in the aggregate) will not have any Material Adverse Effect on
the Company. The term "Material Adverse Effect" means, with respect to the
Company or Unity (as applicable), a material adverse effect on the business,
operations, properties, assets, condition (financial or otherwise) or results of
operations of it and its subsidiaries taken as a whole, or on its ability to
consummate the transactions contemplated hereby except (i) any effect arising
from this Agreement or the transactions contemplated hereby, (ii) any effect
applicable generally to the industries in which the Company operates and (iii)
general economic or financial effects. The copies of the Certificate of
Incorporation and By-laws of the Company, as amended to date and delivered to
Unity, are true and complete copies of these documents as now in effect. The
minute books of the Company are accurate in all material respects.

SECTION 4.2 CAPITALIZATION.

    (a) The authorized capital stock of the Company as of the date hereof (the
"Company's Baseline Capitalization") consists solely of (x) 5,000,000 shares of
Preferred Stock, without par value, of which no shares are issued and
outstanding, and (y) 50,000,000 shares of Company Common Stock, of which
16,256,049 shares are issued and outstanding. All of such shares of Company
Common Stock that are issued and outstanding are duly authorized, validly issued
and outstanding, fully paid and non-assessable and, to the knowledge of the
Company and except as set forth in the Company Disclosure Schedule, were not
issued in violation of the preemptive rights of any person. The term
"knowledge", when expressed herein on behalf of the Company or Unity (as
applicable), means actual knowledge of their respective executive officers.

    (b) As of the date hereof, there are also 1,591,224 shares of Company Common
Stock ("Company Contingent Stock") which are reserved for issuance upon
exercises of issued and outstanding options and warrants (collectively, the
"Company Derivatives"), each as more fully set forth in the Company Disclosure
Schedule.

    (c) The Company has entered into that certain Private Placement Memorandum,
dated September 2, 1998 (with any supplement thereto, the "Private Placement
Memorandum"), with Spencer Trask Securities Incorporated (the "Placement Agent")
regarding the issuance and sale of units, each consisting of 100,000 shares of
Common Stock. Other than (i) the Company Contingent Stock, (ii) the requirement
that the Placement Agent and Corel Corporation, a corporation incorporated under
the laws of Canada, Corel Corporation Limited, a corporation incorporated under
the laws of the Republic

                                      B-6
<PAGE>
of Ireland, and Corel, Inc., a corporation incorporated under the laws of the
State of Delaware (collectively, "Corel"), consent to the sale by the Company of
any securities or any rights to acquire any securities of the Company (except
pursuant to options, warrants, rights or option plans described in the Private
Placement Memorandum) at a price less than $1.00 per share, (iii) the rights
granted to each investor pursuant to the Private Placement Memorandum and to
Corel to purchase pro rata portions of any securities offered by the Company
prior to the issuance of such securities and until such time as there is the
Initial Public Offering, (iv) the obligation of the Company to issue to Corel
and, the Company anticipates, to an additional shareholder of the Company
approximately 1,612,017 shares of Common Stock, on June 30, 2000 and for no
additional consideration, in the event the Company has not consummated the
Initial Public Offering as of such date and (v) as described in this Agreement,
there are no options, warrants, conversion privileges, subscription or purchase
rights or other rights presently outstanding to purchase or otherwise acquire
(x) any authorized but unissued, unauthorized or treasury shares of the
Company's capital stock, (y) any Company Contingent Stock or (z) other
securities of the Company.

    SECTION 4.3  SUBSIDIARIES.  The Company has no Subsidiaries. The term
"Subsidiary" shall mean any corporation or other entity of which the Company or
Unity (as applicable), directly or indirectly, controls or which the Company or
Unity (as applicable) owns, directly or indirectly, 50% or more of the stock or
other voting interests, the holders of which are, ordinarily or generally, in
the absence of contingencies (which contingencies have not occurred) or
understandings (which understandings have not yet been required to be performed)
entitled to vote for the election of a majority of the board of directors or any
similar governing body. Except as set forth in the Company Disclosure Schedule,
the Company does not own any capital stock in any other corporation or similar
business entity nor is the Company a partner in any partnership or joint
venture.

SECTION 4.4 AUTHORITY; NON-CONTRAVENTION; APPROVALS.

    (a) The Company has full corporate power and authority to enter into this
Agreement and, subject to the Company Stockholders' Approval (as defined in
Section 7.3 below), and the Required Statutory Approvals (as defined in Section
4.4(c) below), to consummate the transactions contemplated hereby. The Company's
execution and delivery of this Agreement, and its consummation of the
transactions contemplated hereby, have been duly authorized by its Board of
Directors and no other corporate proceedings on its part are necessary to
authorize its execution and delivery of this Agreement and its consummation of
the transactions contemplated hereby, except for the Company Stockholders'
Approval and the obtaining of the Required Statutory Approvals. This Agreement
has been duly and validly executed and delivered by the Company, and constitutes
its valid and binding agreement, enforceable against it in accordance with its
terms, except that such enforcement may be subject to (i) bankruptcy,
insolvency, reorganization, moratorium or other similar laws affecting or
relating to enforcement of creditors' rights generally and (ii) general
equitable principles ((i) and (ii) the "Enforceability Exception").

    (b) The Company's execution and delivery of this Agreement does not, and its
consummation of the transactions contemplated hereby will not, violate, conflict
with or result in a breach of any provision of, or constitute a default (or an
event which, with notice or lapse of time or both, would constitute a default)
under, or result in the termination of, or accelerate the performance required
by, or result in a right of termination or acceleration under, or result in the
creation of any lien, security interest, charge or encumbrance upon any of its
properties or assets under any of the terms, conditions or provisions of (i) its
Certificate of Incorporation or By-Laws, (ii) subject to obtaining the Required
Statutory Approvals and the receipt of the Company Stockholders' Approval and
the Unity Stockholders' Approval (as defined in Section 7.3 below), any statute,
law, ordinance, rule, regulation, judgment, decree, order, injunction, writ,
permit or license of any court or governmental authority applicable to it or any
of its properties or assets, or (iii) any note, bond, mortgage, indenture, deed
of trust, license,

                                      B-7
<PAGE>
franchise, permit, concession, contract, lease or other instrument, obligation
or agreement of any kind to which it is now a party or by which it or any of its
properties or assets may be bound, excluding from the foregoing clauses (ii) and
(iii), such violations, conflicts, breaches, defaults, terminations,
accelerations or creations of liens, security interests, charges or encumbrances
that do not, in the aggregate, have a Material Adverse Effect on the Company.

    (c) Except for (i) the filing of the Proxy Statement/ Prospectus (as defined
in Section 4.13 below) with the Securities and Exchange Commission (the "SEC")
pursuant to the Securities Act of 1933, as amended (the "Securities Act"), and
the Securities Exchange Act of 1934, as amended (the "Exchange Act"), (ii) the
declaration of the effectiveness thereof by the SEC and the qualification
thereof under state securities or blue sky laws, (iii) the filing with the
California Corporations Commissioner of an Application for Qualification of the
Unity Common Stock under Section 25120 of the CCC, and (iv) the making of the
Merger Filings (as defined in Section 1.2) with the Secretary of State of the
State of Delaware, the Recorder of the County of New Castle, Delaware, and the
Secretary of State of the State of California in connection with the Merger,
(the filings and approvals referred to in clauses (i) through (iv) above are
collectively referred to as the "Required Statutory Approvals"), no declaration,
filing or registration with, or notice to, or authorization, consent or approval
of, any governmental or regulatory body or authority is necessary for the
Company's execution and delivery of this Agreement or its consummation of the
transactions contemplated hereby, other than such declarations, filings,
registrations, notices, authorizations, consents or approvals which, if not made
or obtained, as the case may be, would not, in the aggregate, have a Material
Adverse Effect on the Company.

SECTION 4.5  CONTRACTS; NO DEFAULT.

    (a) Section 4.5(a) of the Company Disclosure Schedule consists of a true and
complete list of all contracts, agreements, commitments and other instruments
(whether oral or written) to which the Company is a party (other than standard
Company purchase orders) that (i) involve a receipt or an expenditure by the
Company or require the performance of services or delivery of goods to, by,
through, on behalf of or for the benefit of the Company, which in each case,
relates to a contract, agreement, commitment or instrument that either (A)
requires payments in excess of $100,000 per year and receipts in excess of
$100,000 per year or (B) is not terminable by the Company on notice of thirty
(30) days or less without penalty or the Company being liable for damages of
$100,000 or more, or (ii) involve an obligation for the performance of services
or delivery of goods by the Company that cannot, or in reasonable probability
will not, be performed within one year from the date hereof.

    (b) All of the contracts, agreements, commitments and other instruments
described in Section 4.5(a) of the Company Disclosure Schedule (individually, a
"Contract" and collectively, the "Contracts") are valid and binding upon the
Company, and to the knowledge of the Company, the other parties thereto, and are
in full force and effect and enforceable in accordance with their terms, subject
to the Enforceability Exception, and neither the Company, nor to the knowledge
of the Company, any other party to any Contract, has materially breached any
provision of, nor has any event occurred which, with the lapse of time or action
by a third party, could result in a material default under, the terms thereof.
To the knowledge of the Company, no stockholder of the Company has received any
payment in violation of law from any contracting party in connection with or as
an inducement for causing the Company to enter into any Contract.

    SECTION 4.6 LITIGATION.  Except as set forth in Schedule 4.6 of the Company
Disclosure Schedule, there is no (i) claim, action, suit or proceeding pending
or, to the Company's knowledge, threatened against or directly relating to the
Company before any court or governmental or regulatory authority or body or
arbitration tribunal, or (ii) outstanding judgment, order, writ, injunction or
decree, or application, request or motion therefor, of any court, governmental
agency or arbitration tribunal in a proceeding to which the Company or any of
its assets was or is a party except, in the case of clauses

                                      B-8
<PAGE>
(i) and (ii) above, such as would not, individually or in the aggregate, have a
Material Adverse Effect on the Company.

    SECTION 4.7 TAXES.  The Company has duly filed with the appropriate
governmental agencies all material franchise, income and all other material Tax
(as hereinafter defined) returns and reports (Tax returns and reports are
hereinafter collectively referred to as "Tax Returns") other than Tax Returns
which the failure to file would have no Material Adverse Effect on the Company.
All such Tax Returns were, when filed, and to the Company's knowledge are,
accurate and complete in all material respects and were prepared in conformity
with applicable laws and regulations. The Company has paid or will pay in full
or has adequately reserved against all Taxes otherwise assessed against it
through the Closing Date. The Company is not a party to any pending action or
proceeding by any governmental authority for the assessment of any Tax, and to
the Company's knowledge, no claim for assessment or collection of any Tax has
been asserted in writing against the Company that has not been paid. There are
no Tax liens upon the assets of the Company (other than liens for taxes not yet
due and payable). There is no valid basis, to the Company's knowledge, for any
assessment, deficiency, notice, 30-day letter or similar intention to assess any
Tax to be issued to the Company by any governmental authority. "Tax" or "Taxes"
shall mean all federal, state, local and foreign taxes, duties, levies, charges
and assessments of any nature, including social security payments and
withholdings relating to wages, salaries and benefits and payments to
subcontractors (to the extent required under applicable Tax law), and also
including all interest, penalties and additions imposed with respect to such
amounts.

SECTION 4.8  EMPLOYEE BENEFIT PLANS; ERISA.

    (a) Except as set forth in or pursuant to the plans, programs, practices and
arrangements listed in the Company Disclosure Schedule, the Company does not
maintain or contribute to any employee benefit plans, programs, arrangements and
practices (such plans, programs, arrangements and practices of the Company being
hereinafter collectively referred to as the "Company Plans"), including employee
benefit plans within the meaning set forth in Section 3(3) of the Employee
Retirement Income Security Act of 1974, as amended, and all regulations
promulgated thereunder, as in effect from time to time ("ERISA"), or any written
employment contracts providing for an annual base salary in excess of $100,000
and having a term in excess of one year, which contracts are not immediately
terminable without penalty or further liability, or other similar arrangements
for the provision of benefits (excluding any "Multi-employer Plan" within the
meaning of Section 3(37) of ERISA, and all regulations promulgated thereunder,
as in effect from time to time). The Company Disclosure Schedule lists all
Multi-employer Plans which the Company maintains or to which it makes
contributions. The Company has no obligation to create any additional such plan
or to amend any such plan so as to increase benefits thereunder, except as
required under the terms of the Company Plans, under existing collective
bargaining agreements or to comply with applicable law.

    (b) (i) There have been no prohibited transactions within the meaning of
Section 406 and 407 of ERISA or Section 4975 of the Code with respect to any of
the Company Plans that could result in penalties, taxes or liabilities which,
singly or in the aggregate, could have a Material Adverse Effect on the Company,
(ii) except for premiums due, there is no outstanding liability in excess of
$10,000 whether measured alone or in the aggregate, under Title IV of ERISA with
respect to any of the Company Plans, (iii) neither the Pension Benefit Guaranty
Corporation nor any plan administrator has instituted proceedings to terminate
any of the Company Plans subject to Title IV of ERISA other than in a "standard
termination" described in Section 4041(b) of ERISA, (iv) none of the Company
Plans has incurred any "accumulated funding deficiency" (as defined in Section
302 of ERISA and Section 412 of the Code), whether or not waived, as of the last
day of the most recent fiscal year of each of the Company Plans ended prior to
the date of this Agreement, (v) based upon reasonable actuarial assumptions
currently utilized for such Company Plan, the current present value of all
projected benefit obligations under each of the Company Plans which is subject
to Title IV of ERISA did not, as of its

                                      B-9
<PAGE>
latest valuation date, exceed the then current value of the assets of such plan
allocable to such benefit liabilities by more than the amount, if any, disclosed
in the Company Financial Statements (as defined in Section 4.16), (vi) each of
the Company Plans has been operated and administered in all material respects in
accordance with applicable laws during the period of time covered by the
applicable statute of limitations, (vii) each of the Company Plans which is
intended to be "qualified" within the meaning of Section 401(a) of the Code has
been determined by the Internal Revenue Service to be so qualified and such
determination has not been modified, revoked or limited by failure to satisfy
any condition thereof or by a subsequent amendment thereto or a failure to
amend, except that it may be necessary to make additional amendments
retroactively to maintain the qualified status of such Company Plans, and the
period for making any such necessary retroactive amendments has not expired,
(viii) with respect to Multi-employer Plans, the Company has not made or
suffered a "complete withdrawal" or a "partial withdrawal," as such terms are
respectively defined in Sections 4203, 4204 and 4205 of ERISA and, to the
knowledge of the Company, no event has occurred or is expected to occur which
presents a material risk of a complete or partial withdrawal under said Sections
4203, 4204 and 4205, (ix) there are no pending or, to the knowledge of the
Company, threatened or anticipated claims involving any of the Company Plans
other than claims for benefits in the ordinary course, and (x) the Company has
no current liability in excess of $50,000, whether measured alone or in the
aggregate, for plan termination or withdrawal (complete or partial) under Title
IV of ERISA based on any plan to which any entity that would be deemed one
employer with the Company under Section 4001 of ERISA or Section 414 of the Code
contributed during the period of time covered by the applicable statute of
limitations (the "Company Controlled Group Plans"), and the Company does not
anticipate that any such liability will be asserted against the Company, none of
the Company Controlled Group Plans has an "accumulated funding deficiency" (as
defined in Section 302 of ERISA and 412 of the Code), and no Company Controlled
Group Plan has an outstanding funding waiver which could result in the
imposition of liens, excise taxes or liability against the Company or any
Company Subsidiary in excess of $10,000 whether measured individually or in the
aggregate, and (xi) none of the Company Plans provides welfare benefits to
employees and/or their dependents subsequent to termination of employment except
as require by Title I, Part 6 of ERISA or applicable state insurance laws.

    SECTION 4.9 NO VIOLATION OF LAW.  The Company is not in violation of and has
not been given notice or been charged with any violation of, any law, statute,
order, rule, regulation, ordinance or judgment (including, without limitation,
any applicable environmental law, ordinance or regulation) of any governmental
or regulatory body or authority, except for violations which, in the aggregate,
do not have, and would not reasonably be expected to have, a Material Adverse
Effect on the Company. The Company has not received any written notice that any
investigation or review with respect to it by any governmental or regulatory
body or authority is pending or threatened, other than, in each case, those the
outcome of which, as far as reasonably can be foreseen, would not reasonably be
expected to have a Material Adverse Effect on the Company. The Company has all
permits, licenses, franchises, variances, exemptions, orders and other
governmental authorizations, consents and approvals necessary to conduct its
business as presently conducted, except for those, the absence of which, singly
or in the aggregate, would not have a Material Adverse Effect on the Company
(collectively, "Permits"). The Company has duly and timely filed all reports and
other information required to be filed with any governmental or regulatory
authority in connection with its Permits, and is not in violation of the terms
of any of its Permits, except for such omissions or delays in filings, reports
or violations which, in the aggregate, would not have a Material Adverse Effect
on the Company.

    SECTION 4.10 INSURANCE.  The Company is covered by insurance policies, or
renewals thereof, as identified and described in Section 4.10 of the Company
Disclosure Schedule. The Company has not received notice from any insurer or
agent of such insurer that material improvements or expenditures will have to be
made in order to continue such insurance and, to the knowledge of the Company,
no such improvements or expenditures are required (other than premium payments)
except for any of the foregoing that would not have a Material Adverse Effect on
the Company.

                                      B-10
<PAGE>
    SECTION 4.11 PROPERTIES.  Except as provided herein, the Company has good
and marketable title to all of the assets and properties which it purports to
own as reflected on the most recent balance sheet comprising a portion of the
Company Financial Statements (as defined in Section 4.16), or thereafter
acquired (except assets and properties sold or otherwise disposed of since the
date of such balance sheet in the ordinary course of business). The Company has
a valid leasehold interest in all properties of which it is the lessee and each
such lease is valid, binding and enforceable against the Company, and, to the
knowledge of the Company, the other parties thereto in accordance with its
terms, subject to the Enforceability Exception. Neither the Company nor, to the
Company's knowledge, the other parties thereto are in default in the performance
of any material provision thereunder. Neither the whole nor any material portion
of the assets of the Company is subject to any governmental decree or order to
be sold or is being condemned, expropriated or otherwise taken by any public
authority with or without payment of compensation therefor, nor, to the
Company's knowledge, has any such condemnation, expropriation or taking been
proposed. None of the material assets of the Company is subject to any
restriction which would have a Material Adverse Effect on the Company.

    SECTION 4.12 CONDITION OF ASSETS.  The material equipment, fixtures and
other personal property of the Company are in good operating condition and
repair (ordinary wear and tear excepted) for the conduct of its business as
presently being conducted, except where the failure to be in such condition or
repair would not have a Material Adverse Effect on the Company.

    SECTION 4.13 REGISTRATION STATEMENT AND PROXY STATEMENT.  None of the
information to be supplied by the Company for inclusion in (a) the Registration
Statement on Form S-4 to be filed under the Securities Act with the SEC by Unity
in connection with the Merger for the purpose of registering the shares of Unity
Common Stock to be issued in the Merger (the "Registration Statement") or (b)
the proxy statement to be distributed in connection with the respective meetings
of the stockholders of the Company and Unity to vote upon this Agreement and the
transactions contemplated hereby (the "Proxy Statement" and, together with the
prospectus included in the Registration Statement, the "Joint Proxy
Statement/Prospectus") will, in the case of the Joint Proxy Statement/Prospectus
or any amendments thereof or supplements thereto, at the time of the mailing of
the Joint Proxy Statement/Prospectus and any amendments or supplements thereto,
and at the time of the meeting of the stockholders of Unity to be held in
connection with the transactions contemplated by this Agreement, or, in the case
of the Registration Statement, as amended or supplemented, at the time it
becomes effective and at the time of such meetings, contain any untrue statement
of a material fact or omit to state any material fact required to be stated
therein or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading, except that the Company
makes no representation or warranty as to information supplied for inclusion
therein by or on behalf of Unity.

    SECTION 4.14 LABOR MATTERS.  The Company is not a party to any union
contract or other collective bargaining agreement. The Company is in compliance
in all material respects with all applicable laws respecting employment and
employment practices, terms and conditions of employment and wages and hours,
and the Company is not engaged in any unfair labor practice. There is no labor
strike, slowdown or stoppage pending (or, to the knowledge of the Company, any
labor strike or stoppage threatened) against or affecting the Company. No
petition for certification has been filed and is pending before the National
Labor Relations Board with respect to any employees of the Company who are not
currently organized.

    SECTION 4.15 EMPLOYEES.  Each employee of the Company with access to
proprietary information regarding the Company has entered into a
confidentiality/assignment of inventions agreement with the Company. To the
Company's knowledge, no key employee or group of employees has any plans to
terminate employment with the Company.

    SECTION 4.16 FINANCIAL STATEMENTS.  The Company Disclosure Schedule contains
or will contain an unaudited interim balance sheet as of September 30, 1998 and
related unaudited interim statements

                                      B-11
<PAGE>
of income, cash flows and stockholders' equity of the Company for the nine
months ended September 30, 1998 and an audited balance sheet as of December 31,
1997 and related audited statements of income, cash flows and stockholders'
equity of the Company for the year ended December 31, 1997 (collectively, the
"Company Financial Statements"). The Company Financial Statements present
fairly, in all material respects, the financial position and results of
operations of the Company as of the dates, period and year indicated, prepared
in accordance with generally accepted accounting principles consistently applied
("GAAP"), and in accordance with Regulation S-X, promulgated by the SEC
("Regulation S-X"), and, in particular, Rules 1-02 and 3-05 thereunder (subject,
in the case of the unaudited financial statements for the nine months ended
September 30, 1998, to normal year-end adjustments and the absence of footnotes.
Without limiting the generality of the foregoing, (i) as of the date of the most
recent balance sheet comprising a portion of the Company Financial Statements,
there was no material debt, liability or obligation of any nature not reflected
or reserved against in the Company Financial Statements or in the notes thereto
required to be so reflected or reserved in accordance with GAAP, and (ii) there
are no assets of the Company, the value of which (in the reasonable judgment of
the Company) is materially overstated in the Company Financial Statements.
Except as disclosed therein or in Section 4.16 of the Company Disclosure
Schedule or as incurred in the ordinary course of business since September 30,
1998, the Company has no known material contingent liabilities (including
liabilities for Taxes) other than as contemplated hereunder or in connection
herewith. The Company is not a party to any contract or agreement for the
forward purchase or sale of any foreign currency and has not invested in any
"derivatives."

    SECTION 4.17 ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as set forth in
Section 4.17 of the Company Disclosure Schedule or in connection with this
Agreement and the transactions contemplated hereby, since September 30, 1998
there has not been:

    (a) any material adverse change in the financial condition, operations,
properties, assets, liabilities or business of the Company;

    (b) any material damage, destruction or loss of any material properties of
the Company, whether or not covered by insurance, which would have a Material
Adverse Effect on the Company;

    (c) any material change in the manner in which the business of the Company
has been conducted, which would have a Material Adverse Effect on the Company;

    (d) any material change in the treatment and protection of trade secrets or
other confidential information of the Company, which would have a Material
Adverse Effect on the Company; and

    (e) any occurrence not included in paragraphs (a) through (d) of this
Section 4.17 which has resulted, or which the Company has reason to believe,
could reasonably be expected to result, in a Material Adverse Effect on the
Company.

    SECTION 4.18 INTELLECTUAL PROPERTY; SOFTWARE.  (a) Section 4.18(a) of the
Company Disclosure Schedule sets forth a complete and correct list in all
material respects of all patents, trademarks, tradenames, service marks, service
names, brand names and copyright registrations, and applications therefor,
applicable to or used in the business of the Company, together with a complete
list of all licenses granted by or to the Company with respect to any of the
above (collectively, "Company Intellectual Property"). To the Company's
knowledge, all Company Intellectual Property is owned by the Company, free and
clear of all liens, claims, security interests and encumbrances of any nature
whatsoever, except where the failure to own or use such Company Intellectual
Property would not have a Material Adverse Effect on the Company, or is used by
the Company pursuant to valid licenses. To the Company's knowledge, the Company
is not currently in receipt of any notice of any violation or infringement of,
and the Company is not knowingly violating or infringing in any material
respect, the rights of others in, or to any patent, unpatented invention,
trademark, tradename, service mark, copyright, trade secret, know-how, design,
process or other intangible asset.

                                      B-12
<PAGE>
    (b) (i) Except as set forth on Schedule 4.18(b)(i) of the Company Disclosure
Schedule, the Company has title to all material computer software owned by the
Company (other than "off-the-shelf" software not customized for its use ("Owned
Software")) free and clear of all liens, claims, security interests and
encumbrances whatsoever. Except as set forth in Section 4.18(b)(i) or (ii) of
the Company Disclosure Schedule, the Owned Software is not dependent on any
Licensed Software (as defined in subsection (ii) below) in order to operate
fully in the manner in which it is intended. The source code of any Owned
Software has not been published or knowingly disclosed to any other parties,
except pursuant to contracts requiring such other parties to keep the source
code of any Owned Software confidential.

    (ii) Section 4.18(b)(ii) of the Company Disclosure Schedule sets forth a
list of the agreements which require the payment of license fees, rents,
royalties or other charges by the Company with respect to all material software
(other than "off-the-shelf" software that has not been customized for its use)
under which the Company is a licensee, lessee or otherwise has obtained the
right to use (the "Licensed Software"). The Company, as applicable, has the
right and license to use, sublicense, modify and copy Licensed Software, free
and clear of any limitations or encumbrances, except as may be set forth in
Section 4.18(b)(ii) of the Company Disclosure Schedule or in the agreements
referenced therein. The Company is in material compliance with all provisions of
each license, lease or other similar agreement pursuant to which it has rights
to use the Licensed Software. Except as disclosed on Section 4.18(b)(ii) of the
Company Disclosure Schedule, none of the Licensed Software has been incorporated
into or made a part of any Owned Software or any other Licensed Software. The
Company has not published or knowingly disclosed any Licensed Software to any
other party except, in the case of Licensed Software which the Company leases or
markets to others, in accordance with and as permitted by any license, lease or
similar agreement relating to the Licensed Software and except pursuant to
contracts requiring such other parties to keep the Licensed Software
confidential. As of the date hereof, to the Company's knowledge, no party to
whom the Company has disclosed Licensed Software has breached such obligation of
confidentiality.

    (iii) The Owned Software and Licensed Software constitute all software used
in the business of the Company (collectively, the "Company Software"). The
transactions contemplated herein will not cause a breach or default under any
license, lease or similar agreement relating to the Company Software or impair
the ability of Unity and the Company to use the Company Software subsequent to
the Effective Time in the same manner as the Company Software is currently used
by the Company. The Company is not knowingly infringing in any material respect
any intellectual property rights of any other person or entity with respect to
the Company Software, and, except as set forth in Section 4.18(b)(iii) of the
Company Disclosure Schedule, to the Company's knowledge, no other person or
entity is infringing any intellectual property rights of the Company with
respect to the Company Software.

SECTION 4.19  YEAR 2000 ISSUE; FUNCTIONAL COMPLIANCE.

    (a) The Company has reviewed the effect of the Year 2000 Issue on the
Company Software, as well as those hardware and firmware systems and equipment
containing embedded microchips owned or operated by the Company or used or
relied upon in the conduct of its business (including systems and equipment
supplied by others or with which such computer systems of the Company
interface). The costs to the Company of any reprogramming required as a result
of the Year 2000 Issue to permit the proper functioning of such systems and
equipment and the proper processing of data, and the testing of such
reprogramming, are not reasonably expected to have a Material Adverse Effect on
the Company. The term "Year 2000 Issue" shall mean the failure of computer
software, hardware and firmware systems and equipment containing embedded
computer chips to properly receive, transmit, process, manipulate, store,
retrieve, re-transmit or in any other way utilize data and information due to
the occurrence of the year 2000 or the inclusion of dates on or after January 1,
2000.

                                      B-13
<PAGE>
    (b) To the Company's knowledge, the Company's product offerings, whether
sold within the last two (2) years, currently in inventory or hereafter
produced, based on the Owned Software and, to the Company's knowledge, on the
Licensed Software, will maintain full functionality and performance consistent
with specifications and contract requirements, and will operate without material
error before, during and after January 1, 2000, including, but not limited to,
accepting data input, providing data output, storing and manipulating data,
providing calculations, recognizing the year 2000 as a leap year, and the years
thereafter as occurring subsequent to the year 2000 and, to the Company's
knowledge, interfacing with products supplied by others, except to the extent
that such other products are not Year 2000 compliant.

    SECTION 4.20 BUSINESS LOCATIONS.  The Company owns or leases no real
property in any state or country except as set forth in Section 4.20 of the
Company Disclosure Schedule. The Company has no executive offices or places of
business except as otherwise set forth on the Company Disclosure Schedule.

    SECTION 4.21 COMPENSATION OF DIRECTORS, OFFICERS AND EMPLOYEES.  There is
set forth in Section 4.21 of the Company Disclosure Schedule a true and complete
list showing (a) the names of all directors and officers of the Company; (b) the
names of all salaried persons whose aggregate compensation for purposes of tax
reporting from the Company in the fiscal year ended December 31, 1998 was, or in
the year ending December 31, 1999 is expected to be $100,000 or more per year;
and (c) the names and titles of all salespersons whose aggregate compensation
for purposes of tax reporting from the Company in the fiscal year ended December
31, 1998 was, or in the year ending December 31, 1999 is expected to be,
$100,000 or more per year.

    SECTION 4.22 BOOKS, RECORDS AND ACCOUNTS.  The Company's books, records and
accounts fairly and accurately reflect in all material respects transactions and
dispositions of assets by the Company, and the system of internal accounting
controls of the Company is (in the reasonable judgment of the Company)
sufficient to assure that: (a) transactions are executed in accordance with
management's authorization; and (b) transactions are recorded as necessary to
permit preparation of financial statements in conformity with GAAP, and to
maintain accountability for assets.

    SECTION 4.23 BROKERS AND FINDERS.  Except for the fees and expenses payable
to Spencer Trask Securities, Inc., the Company has not employed any investment
banker, broker, finder, consultant or intermediary in connection with the
transactions contemplated by this Agreement which would be entitled to any
investment banking, brokerage, finder's or similar fee or commission in
connection with this Agreement or the transactions contemplated hereby.

    SECTION 4.24 NO OMISSIONS OR UNTRUE STATEMENTS.  To the knowledge of the
Company, no representation or warranty made by the Company to Unity in this
Agreement, the Company Disclosure Schedule or in any certificate of a Company
officer required to be delivered to Unity pursuant to the terms of this
Agreement contains or will contain any untrue statement of a material fact, or
omits or will omit to state a material fact necessary to make the statements
contained herein or therein in light of the circumstances in which made not
misleading as of the date hereof and as of the Closing Date.

                                      B-14
<PAGE>
                                   ARTICLE V
                    REPRESENTATIONS AND WARRANTIES OF UNITY

    Unity hereby represents and warrants to the Company as follows (subject in
each case to such exceptions as are set forth or cross-referenced in the
attached Unity Disclosure Schedule in the labeled section corresponding to the
caption of the representation or warranty to which such exceptions relate;
provided, however, that each exception shall be deemed to apply to any
representation of Unity to which it might reasonably apply):

    SECTION 5.1 ORGANIZATION AND QUALIFICATION.  Unity is a corporation duly
incorporated, validly existing and in good standing under the laws of the State
of Delaware. Unity has all requisite corporate power to carry on its business as
it is now being conducted and is duly qualified to do business as a foreign
corporation and is in good standing in all jurisdictions set forth in Section
5.1 of the Unity Disclosure Schedule, and to Unity's knowledge, such
jurisdictions are the only ones in which the properties owned, leased or
operated by Unity or the nature of the business conducted by Unity makes such
qualification necessary, except where the failure to qualify (individually or in
the aggregate) will not have any Material Adverse Effect on Unity. The copies of
the Certificate of Incorporation and By-laws of Unity, as amended to date and
delivered to Company, are true and complete copies of these documents as now in
effect. The minute books of Unity are accurate in all material respects. Unity
does not own any capital stock or other voting interests in any corporation or
other entity.

    SECTION 5.2 CAPITALIZATION.  The authorized capital stock of Unity as of the
date hereof (the "Unity Baseline Capitalization") consists of 20,000,000 shares
of Unity Common Stock, $.0001 par value, of which 1,875,000 shares are issued
and outstanding, and 5,000 preferred shares, $.01 par value, none of which are
outstanding. In addition, Unity has reserved 187,500 shares of Unity Common
Stock for issuance pursuant to exercises of options granted under Unity's stock
option plan, none of which have been granted as of the date hereof (the "Unity
Options"). Furthermore, there are authorized, issued and outstanding 1,250,000
Class A Common Stock Purchase Warrants (the "Class A Warrants") and 1,250,000
Class B Common Stock Purchase Warrants (the "Class B Warrants" and, collectively
with the Class A Warrants, the "Public Warrants") providing for the issuance,
upon exercise, of like number of shares of Unity Common Stock, which warrants
are exercisable at $5.50 and $7.50 per warrant, respectively, 100,000 Class A
and 100,000 Class B non-redeemable common stock purchase warrants providing for
the issuance, upon exercise, of like number of Unity Common Stock, which
warrants are exercisable at $5.50 and $7.50 per warrant, respectively
(collectively, the "Private Warrants"), as well as non-redeemable warrants to
purchase 125,000 units, exercisable at $6.60 per unit, each unit consisting of
one share of Unity Common Stock and one Class A and one Class B common stock
purchase warrant (collectively, the "Representative's Unit Warrants"). All of
the outstanding securities of Unity are duly authorized, validly issued, fully
paid and non-assessable, and were not issued in violation of the preemptive
rights of any person. The Unity Common Stock to be issued upon effectiveness of
the Merger, when issued in accordance with the terms of this Agreement, shall be
duly authorized, validly issued, fully paid and non-assessable. All of the
outstanding securities of Unity, including the Unity Common Stock, the Public
Warrants, the Private Warrants and the Representative's Unit Warrants, were
issued in compliance with all applicable securities laws. No shares of capital
stock are held in the treasury of Unity. Other than as stated in this Section
5.2, there are no outstanding subscriptions, options, warrants, calls or rights
of any kind issued or granted by, or binding upon Unity, to purchase or
otherwise acquire any shares of capital stock of Unity or other securities of
Unity. Except as stated in this Section 5.2, there are no outstanding securities
convertible or exchangeable, actually or contingently, into shares of Unity
Common Stock or other securities of Unity.

                                      B-15
<PAGE>
    SECTION 5.3  SUBSIDIARIES.  There are no Unity Subsidiaries. Unity does not
own any capital stock in any other corporation or similar business entity nor is
Unity a partner in any partnership or joint venture.

    SECTION 5.4  AUTHORITY; NON-CONTRAVENTION; APPROVALS.

    (a) Unity has full corporate power and authority to enter into this
       Agreement and, subject to the Unity Stockholders' Approval and as set
       forth in Section 5.4 of the Unity Disclosure Schedule (the "Amendment
       Approval"), and the Required Statutory Approvals, to consummate the
       transactions contemplated hereby. Unity's execution and delivery of this
       Agreement, and its consummation of the transactions contemplated hereby,
       have been duly authorized by its Board of Directors and no other
       corporate proceedings on its part are necessary to authorize its
       execution and delivery of this Agreement and its consummation of the
       transactions contemplated hereby, except for the Unity Stockholders'
       Approval and the obtaining of the Required Statutory Approvals, both of
       which will be solicited in accordance with Section 7.3 hereof. This
       Agreement has been duly and validly executed and delivered by it, and
       constitutes its valid and binding agreement, enforceable against it in
       accordance with its terms, except that such enforcement may be subject to
       the Enforceability Exception.

    (b) Unity's execution and delivery of this Agreement does not, and its
       consummation of the transactions contemplated hereby will not, violate,
       conflict with or result in a breach of any provision of, or constitute a
       default (or an event which, with notice or lapse of time or both, would
       constitute a default) under, or result in the termination of, or
       accelerate the performance required by, or result in a right of
       termination or acceleration under, or result in the creation of any lien,
       security interest, charge or encumbrance upon any of its properties or
       assets under any of the terms, conditions or provisions of (i) its
       Certificate of Incorporation or By-Laws, (ii) subject to obtaining the
       Required Statutory Approvals and the receipt of the Company Stockholders'
       Approval and the Unity Stockholders' Approval, any statute, law,
       ordinance, rule, regulation, judgment, decree, order, injunction, writ,
       permit or license of any court or governmental authority applicable to it
       or any of its properties or assets, or (iii) any note, bond, mortgage,
       indenture, deed of trust, license, franchise, permit, concession,
       contract, lease or other instrument, obligation or agreement of any kind
       to which it is now a party or by which it or any of its properties or
       assets may be bound, excluding from the foregoing clauses (ii) and (iii),
       such violations, conflicts, breaches, defaults, terminations,
       accelerations or creations of liens, security interests, charges or
       encumbrances that do not, in the aggregate, have a Material Adverse
       Effect on Unity.

    (c) Except for (i) the filing of the Registration Statement and the Joint
       Proxy Statement/Prospectus with the SEC pursuant to the Securities Act
       and the Exchange Act, (ii) the declaration of the effectiveness thereof
       by the SEC, (iii) the filing under Section 25120 of the CCC with the
       California Corporations Commissioner, and (iv) the Required Statutory
       Approvals, no declaration, filing or registration with, or notice to, or
       authorization, consent or approval of, any governmental or regulatory
       body or authority is necessary for Unity's execution and delivery of this
       Agreement or its consummation of the transactions contemplated hereby,
       other than such declarations, filings, registrations, notices,
       authorizations, consents or approvals which, if not made or obtained, as
       the case may be, would not, in the aggregate, have a Material Adverse
       Effect on Unity.

    SECTION 5.5  CONTRACTS LISTED; NO DEFAULT.  All material contracts,
agreements, licenses, leases, easements, permits, rights of way, commitments and
understandings, written or oral, connected with or relating in any respect to
the present or future operations of Unity are, with the exception of this
Agreement and the transactions contemplated hereby, described in Unity's SEC
Reports (as defined in Section 5.14) and listed as exhibits thereto (the "Unity
Contracts"). The Unity Contracts are valid and

                                      B-16
<PAGE>
binding upon Unity, and to Unity's knowledge, the other parties thereto, and are
in full force and effect and enforceable in accordance with their terms, subject
to the Enforceability Exception and neither Unity, nor to Unity's knowledge, any
other party to any Unity Contract, has materially breached any provision of, nor
has any event occurred which, with the lapse of time or action by a third party,
could result in a material default under, the terms thereof. To the knowledge of
Unity, no stockholder of Unity has received any payment in violation of law from
any contracting party in connection with or as an inducement for causing Unity
to enter into any Unity Contract.

    SECTION 5.6  LITIGATION.  There is no (i) claim, action, suit or proceeding
pending or, to Unity's knowledge, threatened against or directly relating to
Unity before any court or governmental or regulatory authority or body or
arbitration tribunal, or (ii) outstanding judgment, order, writ, injunction or
decree, or application, request or motion therefor, of any court, governmental
agency or arbitration tribunal in a proceeding to which Unity or any of its
assets was or is a party except, in the case of clauses (i) and (ii) above, such
as would not, individually or in the aggregate, either materially impair or
preclude Unity's ability to consummate the Merger or the other transactions
contemplated hereby or have a Material Adverse Effect on Unity.

    SECTION 5.7  TAXES.  Unity has duly filed with the appropriate governmental
agencies all Tax Returns required to be filed by it other than Tax Returns which
the failure to file would have no Material Adverse Effect on Unity. All such Tax
Returns were, when filed, and to Unity's knowledge are, accurate and complete in
all material respects and were prepared in conformity with applicable laws and
regulations. Unity has paid or will pay in full or has adequately reserved
against all Taxes otherwise assessed against it through the Closing Date. Unity
is not a party to any pending action or proceeding by any governmental authority
for the assessment of any Tax, and, to Unity's knowledge, no claim for
assessment or collection of any Tax has been asserted against Unity that has not
been paid. There are no Tax liens upon the assets of Unity (other than liens for
taxes not yet due and payable). There is no valid basis, to Unity's knowledge,
for any assessment, deficiency, notice, 30-day letter or similar intention to
assess any Tax to be issued to Unity by any governmental authority.

    SECTION 5.8  EMPLOYEE PLANS.  Unity has no employee benefit plans as defined
in Section 3(3) of ERISA nor any employment agreements.

    SECTION 5.9  NO VIOLATION OF LAW.  Unity is not in violation of and has not
been given notice or been charged with any violation of, any law, statute,
order, rule, regulation, ordinance or judgment (including, without limitation,
any applicable environmental law, ordinance or regulation) of any governmental
or regulatory body or authority, except for violations which, in the aggregate,
do not have, and would not reasonably be expected to have, a Material Adverse
Effect on Unity. Unity has not received any written notice that any
investigation or review with respect to it by any governmental or regulatory
body or authority is pending or threatened, other than, in each case, those the
outcome of which, as far as reasonably can be foreseen, would not reasonably be
expected to have a Material Adverse Effect on Unity. Unity has all permits,
licenses, franchises, variances, exemptions, orders and other governmental
authorizations, consents and approvals necessary to conduct its business as
presently conducted, except for those, the absence of which, alone or in the
aggregate, would not have a Material Adverse Effect on Unity (collectively, the
"Unity Permits"). Unity (a) has duly and timely filed all reports and other
information required to be filed with any governmental or regulatory authority
in connection with the Unity Permits, and (b) is not in violation of the terms
of any of the Unity Permits, except for such omissions or delays in filings,
reports or violations which, alone or in the aggregate, would not have a
Material Adverse Effect on Unity. Section 5.9 of the Unity Disclosure Schedule
contains a list of the Unity Permits.

    SECTION 5.10  PROPERTIES.  Unity has good and marketable title to all of the
assets and properties which it purports to own as reflected on the most recent
balance sheet comprising a portion of the Unity Financial Statements (as defined
in Section 5.13) or thereafter acquired (except assets and

                                      B-17
<PAGE>
properties sold or otherwise disposed of since the date of such balance sheet in
the ordinary course of business). Unity has a valid leasehold interest in all
properties of which it is the lessee and each such lease is valid, binding and
enforceable against Unity, and, to the knowledge of Unity, the other parties
thereto in accordance with its terms, subject to the Enforceability Exception.
Neither Unity nor, to Unity's knowledge, the other parties thereto are in
default in the performance of any material provision thereunder. Neither the
whole nor any material portion of the assets of Unity is subject to any
governmental decree or order to be sold or is being condemned, expropriated or
otherwise taken by any public authority with or without payment of compensation
therefor, nor, to the knowledge of Unity, has any such condemnation,
expropriation or taking been proposed. None of the material assets of Unity is
subject to any restriction which would prevent continuation of the use currently
made thereof or materially adversely affect the value thereof.

    SECTION 5.11 REGISTRATION STATEMENT AND PROXY STATEMENT.  None of the
information to be supplied by Unity for inclusion in the Registration Statement
or the Joint Proxy Statement/Prospectus will, in the case of the Joint Proxy
Statement/Prospectus or any amendments thereof or supplements thereto, at the
time of the mailing of the Joint Proxy Statement/Prospectus and any amendments
or supplements thereto, and at the time of the meeting of the stockholders of
Unity to be held in connection with the transactions contemplated by this
Agreement, or, in the case of the Registration Statement, as amended or
supplemented, at the time it becomes effective and at the time of such meetings,
contain any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they are made, not
misleading.

    SECTION 5.12  BUSINESS.  Unity, since its formation, has engaged in no
business other than to seek to serve as a vehicle for the acquisition of an
operating business, and, except for this Agreement, is not a party to any
contract or agreement for the acquisition of an operating business. Unity has no
employees.

    SECTION 5.13  FINANCIAL STATEMENTS.  The financial statements of Unity
(collectively, the "Unity Financial Statements") included in Unity's SEC Reports
(as defined in Section 5.14) present fairly, in all material respects, the
financial position and results of operations of Unity as of the respective
dates, years and periods indicated, prepared in accordance with GAAP, applied on
a consistent basis, and in accordance with Regulation S-X of the SEC and, in
particular, Rules 1-02 and 3-05 thereunder (subject, in the case of unaudited
interim period financial statements, to normal and recurring year-end
adjustments which, individually or collectively, are not material to Unity).
Without limiting the generality of the foregoing, (i) there is no basis for any
assertion against Unity as of the date of the most recent balance sheet
comprising a portion of the Unity Financial Statements of any material debt,
liability or obligation of any nature not fully reflected or reserved against in
the Unity Financial Statements or in the notes thereto required to be so
reflected or reserved in accordance with GAAP; and (ii) there are no assets of
Unity, the value of which (in the reasonable judgment of Unity) is materially
overstated in the Unity Financial Statements. Except as disclosed therein or as
incurred in the ordinary course of business since October 31, 1998, Unity has no
known material contingent liabilities (including liabilities for Taxes). Unity
is not a party to any contract or agreement for the forward purchase or sale of
any foreign currency and has not invested in any "derivatives."

    SECTION 5.14  UNITY'S SEC REPORTS.  The Unity Common Stock has been
registered under Section 12 of the Exchange Act on Form 8-A. Since its
inception, Unity has filed all reports, registration statements and other
documents, together with any amendments thereto, required to be filed under the
Securities Act and the Exchange Act, including but not limited to reports on
Form 10-K and Form 10-Q, and Unity will file all such reports, registration
statements and other documents required to be filed by it from the date of this
Agreement to the Closing Date (all such reports, registration statements and
documents, including its Form 8-A, filed or to be filed with the SEC, including
Unity's

                                      B-18
<PAGE>
initial registration statement relating to the Unity Common Stock, Public
Warrants, Private Warrants and the Representative's Unit Warrants, with the
exception of the Registration Statement and the Joint Proxy
Statement/Prospectus, are collectively referred to as "Unity's SEC Reports"). As
of their respective dates, Unity's SEC Reports complied or will comply in all
material respects with all rules and regulations promulgated by the SEC and did
not or will not contain any untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary in order to make the
statements therein, in light of the circumstances under which they were made,
not misleading. Unity has provided to the Company a true and complete copy of
all of Unity's SEC Reports filed on or prior to the date hereof, and will
promptly provide to the Company a true and complete copy of any such reports
filed after the date hereof and prior to the Closing Date. Neither Unity nor any
of its respective directors or officers is the subject of any investigation,
inquiry or proceeding before the SEC or any state securities commission or
administrative agency.

    SECTION 5.15  BULLETIN BOARD.  Each of the Unity Common Stock, Class A
Warrants and Class B Warrants are quoted on the Bulletin Board under the
respective symbols "UFAC", "UFACW" and "UFACZ," and Unity is in compliance in
all respects with all rules and regulations of the National Association of
Securities Dealers, Inc. applicable to Unity and to the inclusion for quotation
of such securities on the Bulletin Board.

    SECTION 5.16  ABSENCE OF CERTAIN CHANGES OR EVENTS.  Except as set forth in
Section 5.16 of Unity Disclosure Schedule, since October 31, 1998 there has not
been:

    (a) any material adverse change in the financial condition, operations,
       properties, assets, liabilities or business of Unity;

    (b) any material damage, destruction or loss of any material properties of
       Unity, whether or not covered by insurance;

    (c) any change in the manner in which the business of Unity has been
       conducted;

    (d) any material change in the treatment and protection of trade secrets or
       other confidential information of Unity; and

    (e) any occurrence not included in paragraphs (a) through (d) of this
       Section which has resulted, or which Unity has reason to believe, could
       reasonably be expected to result, in a Material Adverse Effect on Unity.

    SECTION 5.17  BOOKS, RECORDS AND ACCOUNTS.  Unity's books, records and
accounts fairly and accurately reflect in all material respects transactions and
dispositions of assets by Unity, and the system of internal accounting controls
of Unity is sufficient to assure that: (a) transactions are executed in
accordance with management's authorization; (b) transactions are recorded as
necessary to permit preparation of financial statements in conformity with GAAP,
and to maintain accountability for assets; (c) access to assets is permitted
only in accordance with management's authorization; and (d) the recorded
accountability for assets is compared with the existing assets at reasonable
intervals and appropriate action is taken with respect to any differences.

    SECTION 5.18  BROKERS AND FINDERS.  Unity has not employed any investment
banker, broker, finder, consultant or intermediary in connection with the
transactions contemplated by this Agreement which would be entitled to any
investment banking, brokerage, finder's or similar fee or commission in
connection with this Agreement or the transactions contemplated hereby.

    SECTION 5.19  NO OMISSIONS OR UNTRUE STATEMENTS.  To Unity's knowledge, no
representation or warranty made by Unity to the Company in this Agreement, the
Unity Disclosure Schedule or in any certificate of a Unity officer required to
be delivered to the Company pursuant to the terms of this Agreement contains or
will contain any untrue statement of a material fact, or omits or will omit to
state a material fact necessary to make the statements contained herein or
therein in light of the circumstances in which made not misleading as of the
date hereof and as of the Closing Date.

                                      B-19
<PAGE>
                                   ARTICLE VI

                     CONDUCT OF BUSINESS PENDING THE MERGER

    SECTION 6.1  CONDUCT OF BUSINESS PRIOR TO EFFECTIVE TIME.  Each of Unity and
the Company hereby covenants and agrees as follows, from and after the date of
this Agreement and until the Effective Time, except as specifically consented to
in writing by the other party or as set forth in Section 6.1 of the respective
Disclosure Schedules:

    (a) It shall conduct its business in the ordinary and usual course of
business and consistent with past practice;

    (b) It shall not (i) split, combine or reclassify its outstanding capital
stock or declare, set aside or pay any dividend or distribution payable in cash,
stock, property or otherwise, (ii) spin-off any assets or businesses, (iii)
engage in any transaction for the purpose of effecting a recapitalization, or
(iv) engage in any transaction or series of related transactions which has a
similar effect to any of the foregoing;

    (c) Other than as set forth in Section 6.1(c) of the Company Disclosure
Schedule, it shall not issue, sell, pledge or dispose of, or agree to issue,
sell, pledge or dispose of, any additional shares of, or any options, warrants
or rights of any kind to acquire any shares of its capital stock of any class or
any debt or equity securities convertible into or exchangeable for such capital
stock or amend or modify the terms and conditions of any of the foregoing,
provided, however, that it (i) may issue shares upon exercise of outstanding
options, warrants or stock purchase rights and (ii) in the case of the Company
it may (w) grant options to acquire shares of Company Common Stock to both
present and future employees under the Company Stock Option Plan, (x) offer and
sell shares of Company Common Stock in one or more private transactions at a
price of not less than $1.00 per share to an aggregate maximum of $4,175,000 and
may issue warrants to acquire shares of Company Common Stock in customary
amounts to placement agents who facilitate such sales, (y) issue shares of
Company Common Stock as well as warrants to purchase shares of Company Common
Stock to non-affiliated persons and entities for the purposes of purchasing or
licensing technology which, in the reasonable judgment of the Company's Board of
Directors, is necessary or desirable for the Company's growth and development,
and (z) issue up to an aggregate maximum of 100,000 shares of Company Common
Stock or options or warrants to acquire such shares to entities which currently
provide services to the Company or to directors, officers, consultants or
employees of such entities;

    (d) It shall not (i) redeem, purchase, acquire or offer to purchase or
acquire any shares of its capital stock, other than as required by the governing
terms of such securities, (ii) take any action (either before or after the
Effective Time) which would jeopardize the treatment of the Merger as a
"reorganization" within the meaning of Section 368(a) of the Code, (iii) take or
fail to take any action which action or failure to take action would cause it or
its stockholders (except to the extent that any stockholders receive cash in
lieu of fractional shares) to recognize gain or loss for federal income tax
purposes as a result of the consummation of the Merger, (iv) make any
acquisition of any material assets (except in the ordinary course of business)
or businesses, (v) sell any material assets (except in the ordinary course of
business) or businesses, or (vi) enter into any contract, agreement, commitment
or arrangement to do any of the foregoing;

    (e) It shall use reasonable efforts to preserve intact its business
organization and goodwill, keep available the services of its present officers
and key employees, and preserve the goodwill and business relationships with
suppliers, distributors, customers, and others having business relationships
with it, and not engage in any action, directly or indirectly, with the intent
to impact adversely the transactions contemplated by this Agreement;

    (f) It shall confer on a regular basis with one or more representatives of
the other to report on material operational matters and the general status of
ongoing operations; and

                                      B-20
<PAGE>
    (g) It shall file with the SEC all forms, statements, reports and documents
(including all exhibits, amendments and supplements thereto) required to be
filed by it pursuant to the Exchange Act.

    SECTION 6.2  NO SOLICITATION.

    (a) The Company agrees that, prior to the Effective Time or the termination
or abandonment of this Agreement, the Company shall not give authorization or
permission to any of its directors, officers, employees, agents or
representatives to, and each shall use all reasonable efforts to see that such
persons do not, directly or indirectly, solicit, initiate, facilitate or
encourage (including by way of furnishing or disclosing information) any merger,
consolidation, other business combination involving the Company, acquisition of
all or any substantial portion of the assets or capital stock of the Company or
of the assets of any division of the Company, or inquiries or proposals
concerning or which may reasonably be expected to lead to any of the foregoing
(a "Company Acquisition Transaction") or negotiate, explore or otherwise
knowingly communicate in any way with any third party (other than Unity or its
affiliates) with respect to any Company Acquisition Transaction or enter into
any agreement, arrangement or understanding requiring it to abandon, terminate
or fail to consummate the Merger or any other transaction expressly contemplated
by this Agreement, or contemplated to be a material part thereof. The Company
shall advise Unity in writing of any BONA FIDE inquiries or proposals relating
to any Company Acquisition Transaction within one business day following the
Company's receipt of any such inquiry or proposal. The Company shall also
promptly advise any person seeking a Company Acquisition Transaction that it is
bound by the provisions of this Section.

    (b) Unity agrees that, prior to the Effective Time or the termination or
abandonment of this Agreement, Unity shall not give authorization or permission
to any of its directors, officers, employees, agents or representatives to, and
each shall use all reasonable efforts to see that such persons do not, directly
or indirectly, solicit, initiate, facilitate or encourage (including by way of
furnishing or disclosing information) any merger, consolidation, other business
combination involving Unity, acquisition of all or any substantial portion of
the assets or capital stock of Unity or of the assets of any division of Unity,
or inquiries or proposals or which may reasonably be expected to lead to any of
the foregoing (a "Unity Acquisition Transaction") or negotiate, explore or
otherwise knowingly communicate in any way with any third party (other than the
Company or its affiliates) with respect to any Unity Acquisition Transaction or
enter into any agreement, arrangement or understanding requiring it to abandon,
terminate or fail to consummate the Merger or any other transaction expressly
contemplated by this Agreement, or contemplated to be a material part thereof.
Unity shall advise the Company in writing of any BONA FIDE inquiries or
proposals relating to a Unity Acquisition Transaction, within one business day
following Unity's receipt of any such inquiry or proposal. Unity shall also
promptly advise any person seeking a Unity Acquisition Transaction that it is
bound by the provisions of this Section.

                                  ARTICLE VII
                             ADDITIONAL AGREEMENTS

    SECTION 7.1  ACCESS TO INFORMATION.  Each of Unity and the Company shall
afford to the other and the other's accountants, counsel, financial advisors and
other representatives reasonable access during normal business hours throughout
the period prior to the Effective Time to all properties, books, contracts,
commitments and records (including, but not limited to, Tax Returns) of it and,
during such period, shall furnish promptly (a) a copy of each report, schedule
and other document filed or received by it during such period pursuant to the
requirements of federal or state securities laws or filed by it during such
period with the SEC in connection with the transactions contemplated by this
Agreement or which may have a Material Adverse Effect on its business,
properties or personnel and (b) such other information concerning its business,
properties and personnel as the other shall reasonably request; provided,
however, that no investigation pursuant to this Section 7.1 shall affect any
representation or warranty made herein or the conditions to the obligations of
the respective parties to

                                      B-21
<PAGE>
consummate the Merger. All non-public documents and information furnished to
Unity or to the Company, as the case may be, in connection with the transactions
contemplated by this Agreement shall be deemed to have been received, and shall
be held by the recipient, in confidence, except that Unity and the Company, as
applicable, may disclose such information as may be necessary in connection with
seeking the Unity Required Statutory Approvals, the Unity Stockholders'
Approval, the Company Required Statutory Approvals and the Company Stockholders'
Approval. The Company shall promptly advise Unity, and Unity shall promptly
advise the Company, in writing, of any change or the occurrence of any event
after the date of this Agreement and prior to the Effective Time having, or
which, insofar as can reasonably be foreseen, in the future would reasonably be
expected to have, any Material Adverse Effect on the Company or Unity, as
applicable.

    SECTION 7.2  REGISTRATION STATEMENT AND PROXY STATEMENT/ PROSPECTUS.  Unity
and the Company shall prepare and file with the SEC as soon as is reasonably
practicable after the date hereof the Registration Statement and Joint Proxy
Statement/Prospectus and shall use all reasonable efforts to have the
Registration Statement declared effective by the SEC as promptly as practicable.
Unity and the Company shall take any action required to be taken under
applicable California "blue sky" or securities laws in connection with the
issuance of Unity Common Stock. Unity and the Company shall promptly furnish to
each other all information, and take such other actions, as may reasonably be
requested in connection with any action by any of them in connection with the
preceding sentence and shall cooperate with one another and use their respective
best efforts to facilitate the expeditious consummation of the transactions
contemplated by this Agreement. The Registration Statement shall contain an
updated prospectus covering the Public Warrants, the Private Warrants and the
Representative's Unit Warrants and the like number of shares of Unity Common
Stock issuable upon exercise thereof (the "Unity Underlying Stock"), as well as
a resale prospectus covering all shares of Unity Common Stock that are
beneficially owned by the current officers and directors of Unity and their
respective affiliates (collectively, the "Unity Affiliates' Stock"). If the
rules and regulations of the SEC shall not permit the utilization of the
Registration Statement for this purpose, Unity and the Company shall prepare and
file with the SEC contemporaneously with the filing of the Registration
Statement and the Joint Proxy Statement/Prospectus a registration statement on
Form S-1 covering the Public Warrants, the Private Warrants, the
Representative's Unit Warrants, the Unity Underlying Stock and the Unity
Affiliates' Stock (the "Companion Registration Statement"), and each covenants
with the other to use all reasonable efforts to have the Companion Registration
Statement declared effective by the SEC as promptly as practicable but in no
event later than the expiration of forty (40) business days following the
Effective Time. These covenants shall survive the Effective Time. Unity will pay
all expenses of filing, printing and distributing the Registration Statement and
the Joint Proxy Statement/ Prospectus.

    SECTION 7.3  STOCKHOLDERS' APPROVAL.  The Company shall use its reasonable
best efforts to obtain stockholder approval and adoption (the "Company
Stockholders' Approval") of this Agreement and the transactions contemplated
hereby as soon as practicable following the date upon which the Registration
Statement is declared effective by the SEC. The Company shall, through its Board
of Directors, recommend to the holders of Company Common Stock approval of this
Agreement and the transactions contemplated by this Agreement. Unity shall use
its reasonable best efforts to obtain stockholder approval and adoption (the
"Unity Stockholders' Approval") of this Agreement and the transactions
contemplated hereby as soon as practicable following the date upon which the
Registration Statement is declared effective by the SEC. Unity shall, through
its Board of Directors, recommend to the holders of Unity Common Stock approval
of this Agreement and the transactions contemplated by this Agreement.

    SECTION 7.4  NASDAQ LISTING.  Unity and the Company shall each use its best
efforts to effect, at or before the Effective Time, authorization for listing of
the shares of Unity Common Stock on the NASDAQ SmallCap Market or, if
permissible, the NASDAQ National Market.

                                      B-22
<PAGE>
    SECTION 7.5  AGREEMENT TO COOPERATE.  Subject to the terms and conditions
herein provided, each of the parties hereto shall cooperate and use their
respective best efforts to take, or cause to be taken, all action and to do, or
cause to be done, all things necessary, proper or advisable under applicable
laws and regulations to consummate and make effective the transactions
contemplated by this Agreement, including using its reasonable efforts to obtain
all necessary or appropriate waivers, consents and approvals to effect all
necessary registrations, filings and submissions and to lift any injunction or
other legal bar to the Merger (and, in such case, to proceed with the Merger as
expeditiously as possible), subject, however, to obtaining the Required
Statutory Approvals, the Company Stockholders' Approval and the Unity
Stockholders' Approval; and provided that nothing in this Section 7.5 shall
affect any responsibility or obligation specifically allocated to any party in
this Agreement.

    SECTION 7.6  PUBLIC STATEMENTS.  The parties shall consult with each other
prior to issuing any press release or any written public statement with respect
to this Agreement or the transactions contemplated hereby. Unity shall not issue
any such press release or any other public statement with respect to this
Agreement or the transactions contemplated hereby absent the prior written
consent of the Company, except that such prior written consent shall not be
required if, in the reasonable judgment of Unity based upon the advice of
counsel, seeking and obtaining prior written consent would prevent the timely
dissemination of such release or statement in violation of the Exchange Act,
other applicable law, rule, regulation or policy of the Bulletin Board.

    SECTION 7.7  CORRECTIONS TO THE JOINT PROXY STATEMENT/PROSPECTUS AND
REGISTRATION STATEMENT. Prior to the Effective Time, each of the Company and
Unity shall correct promptly any information provided by it to be used
specifically in the Registration Statement, Joint Proxy Statement/Prospectus
and, if applicable, Companion Registration Statement that shall have become
false or misleading in any material respect and shall take all steps necessary
to file with the SEC and have declared effective or cleared by the SEC any
amendment or supplement to the Registration Statement, Joint Proxy
Statement/Prospectus or Companion Registration Statement, as applicable, so as
to correct the same and to cause appropriate dissemination thereof to the
stockholders of the Company and/or stockholders of Unity, in each case to the
extent required by applicable law.

    SECTION 7.8  DISCLOSURE SUPPLEMENTS.  From time to time prior to the
Effective Time, and in any event immediately prior to the Effective Time, each
of Unity and the Company shall promptly supplement or amend its Disclosure
Schedule with respect to any matter hereafter arising that, if existing,
occurring or known at the date of this Agreement, would have been required to be
set forth or described in such Disclosure Schedule or that is necessary to
correct any information in such Disclosure Schedule that is or has become
inaccurate. Notwithstanding the foregoing, if any such supplement or amendment
discloses a Material Adverse Effect, the conditions to the other party's
obligations to consummate the Merger set forth in Article VIII hereof shall be
deemed not to have been satisfied.

                                      B-23
<PAGE>
                                  ARTICLE VIII

                                   CONDITIONS

    SECTION 8.1  CONDITIONS TO EACH PARTY'S OBLIGATIONS TO EFFECT THE
MERGER.  The respective obligation of each party to effect the Merger shall be
subject to the fulfillment at or prior to the Closing Date of the following
conditions:

    (a) The Company shall have obtained the Company Stockholders' Approval;

    (b) Unity shall have obtained the Unity Stockholders' Approval and the
       Amendment Approval;

    (c) The Registration Statement shall have become effective in accordance
       with the provisions of the Securities Act, and no stop order suspending
       such effectiveness shall have been issued and remain in effect;

    (d) No preliminary or permanent injunction or other order or decree by any
       federal or state court which prevents or materially burdens the
       consummation of the Merger shall have been issued and remain in effect
       (each party agreeing to use its reasonable efforts to have any such
       injunction, order or decree lifted);

    (e) No action shall have been taken, and no statute, rule or regulation
       shall have been enacted, by any state or federal government or
       governmental agency in the United States, which would prevent or
       materially burden the consummation of the Merger;

    (f) All consents, orders and approvals legally required for the consummation
       of the Merger and the transactions contemplated hereby (including without
       limitation all Required Statutory Approvals) shall have been obtained and
       be in effect at the Effective Time without any material limitations or
       conditions; and

    (g) As of the Closing Date, all "blue sky" filings as may be required in
       order for the offer, issuance and sale of all of the shares of Unity
       Common Stock to be issued pursuant to Section 3.1 of this Agreement to be
       in full compliance with all applicable state securities laws and
       regulations shall have been made and shall be in effect and not subject
       to any suspension, revocation, or stop order, as may be required in order
       for the offer, issuance and sale of all such securities to be legally
       permitted under all such laws and regulations.

    SECTION 8.2  CONDITIONS TO OBLIGATIONS OF THE COMPANY TO EFFECT THE
MERGER.  Unless waived by the Company, the obligation of the Company to effect
the Merger shall also be subject to the fulfillment at or prior to the Closing
Date of the following additional conditions:

    (a) Unity shall have performed in all material respects its agreements
       contained in this Agreement required to be performed on or prior to the
       Closing Date and the representations and warranties of Unity contained in
       this Agreement shall be true and correct in all material respects (except
       for those representations and warranties which are themselves limited by
       a reference to materiality, which shall be true and correct in all
       respects other than as modified) on and as of (i) the date made and (ii)
       the Closing Date (in each case except in the case of representations and
       warranties expressly made solely with reference to a particular date
       which shall be true and correct in all material respects as of such
       date); and the Company shall have received a certificate of the President
       and Chief Executive Officer of Unity to that effect;

    (b) The Company shall have received an opinion from Cooperman Levitt
       Winikoff Lester & Newman, P.C. ("Cooperman Levitt"), counsel to Unity,
       dated the Closing Date, substantially in the form set forth in Exhibit
       III hereto;

    (c) The Company shall have received "comfort" letters from Arthur Andersen
       LLP, independent public accountants for Unity, dated the date of the
       Joint Proxy Statement/Prospectus, the

                                      B-24
<PAGE>
       effective date of the Registration Statement and the Closing Date (or
       such other date reasonably acceptable to the Company) with respect to
       certain financial statements and other financial information included in
       the Registration Statement in customary form;

    (d) The Company shall have received an opinion of Brobeck, Phleger &
       Harrison LLP ("Brobeck Phleger"), counsel to the Company, dated the
       Effective Time, to the effect that the Merger will be treated for federal
       income tax purposes as a reorganization within the meaning of Section
       368(a) of the Code;

    (e) Since the date of this Agreement there shall not have been any Material
       Adverse Effect with respect to Unity, the likelihood of which was not
       previously disclosed to the Company by Unity in the Unity Disclosure
       Schedule or contemplated by this Agreement and Unity shall have engaged
       in no business activity since the date of its incorporation other than
       conducting a public offering of its securities and, thereafter, seeking
       to effect a merger or similar business combination with an operating
       business;

    (f) Unity shall have furnished to the Company such additional certificates
       and other customary closing documents as the Company may have reasonably
       requested as to any of the conditions set forth in this Section 8.2;

    (g) At the Effective Time, Unity shall have at least an aggregate of
       $6,000,000 in cash or cash equivalents before giving effect to any
       payments required to be paid to Unity's stockholders exercising their
       rights, contained in Unity's Certificate of Incorporation, as amended, to
       requested conversion of their respective shares of Unity Common Stock
       into cash (the "Cash Out Option") should the Merger be consummated, but
       after giving effect to the payment or accrual on or prior to the
       Effective Time of all expenses incurred by Unity, including, but not
       limited to, the fees and expenses of Unity's attorneys and accountants,
       in connection with the transactions contemplated by this Agreement;

    (h) The holders of no greater than nineteen and 99/100 percent (19.99%) in
       the aggregate in interest of Unity Common Stock shall exercise the Cash
       Out Option;

    (i) The holders of no greater than ten percent (10%) in the aggregate in
       interest of Unity Common Stock shall have perfected their statutory
       dissenters' rights with respect to the Merger and have Dissenters' Stock;

    (j) At Closing, the Unity Baseline Capitalization, the number of Unity
       Options and the respective numbers of Public Warrants, Private Warrants
       and Representative's Unit Warrants (collectively "Unity Derivatives")
       shall be unchanged (other than to reflect issuances, if any, of Unity
       Common Stock upon exercises prior to the Effective Time of Unity
       Derivatives) from that set forth in Section 5.2;

    (k) The Company shall have received a letter agreement signed by each
       officer, director and principal stockholder of Unity and their respective
       Affiliates (as such term is defined in Rule 501, promulgated under the
       Securities Act) (collectively, the "Unity Principals") in substantially
       the form attached as Schedule 8.2(k) hereto ("Lock-Up Agreements");

    (l) The Company shall have received written resignations from each of
       Unity's officers and directors (except that Lawrence Burstein shall
       resign only as an officer of Unity), which resignations, by their
       respective terms, shall become effective immediately prior to the
       Effective Time;

    (m) The Company shall have received a copy of a Voting Agreement in
       substantially the form attached hereto as Schedule 8.2(m) (the "Voting
       Agreement") signed by each of the Unity Principals;

                                      B-25
<PAGE>
    (n) Unity shall have conducted the operation of its business in material
       compliance with all applicable laws, rules and regulations, whether
       Federal, state or local in their nature, and all approvals required of
       Unity under applicable law to enable Unity to perform its obligations
       under this Agreement shall have been obtained; and

    (o) All corporate proceedings of Unity in connection with the Merger and the
       other transactions contemplated by this Agreement and all agreements,
       instruments, certificates, and other documents delivered to the Company
       by or on behalf of Unity pursuant to this Agreement shall be reasonably
       satisfactory to the Company and its counsel.

    SECTION 8.3  CONDITIONS TO OBLIGATIONS OF UNITY TO EFFECT THE
MERGER.  Unless waived by Unity, the obligations of Unity to effect the Merger
shall also be subject to the fulfillment at or prior to the Closing Date of the
additional following conditions:

    (a) The Company shall have performed in all material respects its agreements
       contained in this Agreement required to be performed on or prior to the
       Closing Date and the representations and warranties of the Company
       contained in this Agreement shall be true and correct in all material
       respects (except for those representations and warranties which are
       themselves limited by a reference to materiality, which shall be true and
       correct in all respects, other than as modified) on and as of (i) the
       date made and (ii) the Closing Date (in each case except in the case of
       representations and warranties expressly made solely with reference to a
       particular date which shall be true and correct in all material respects
       as of such date); and Unity shall have received a Certificate of the
       President and Chief Executive Officer or of a Vice President of the
       Company to that effect;

    (b) Unity shall have received an opinion from Brobeck Phleger, dated the
       Closing Date, substantially in the form set forth in Exhibit IV hereto;

    (c) Unity shall have received "comfort" letters from BDO Seidman, LLP,
       independent certified public accountants for the Company, dated the date
       of the Joint Proxy Statement/Prospectus, the effective date of the
       Registration Statement and the Closing Date (or such other date
       reasonably acceptable to Unity) with respect to certain financial
       statements and other financial information included in the Registration
       Statement in customary form;

    (d) Unity shall have received an opinion of Cooperman Levitt, dated the
       Effective Time, to the effect that the Merger will be treated for federal
       income tax purposes as a reorganization within the meaning of Section
       368(a) of the Code;

    (e) At Closing, the Company's Baseline Capitalization shall be unchanged
       (other than to reflect issuances, if any, of Company Contingent Stock
       upon exercises and/or conversions prior to the Effective Time of Company
       Derivatives) and the number of shares of Contingent Company Stock shall
       be no greater, respectively, than as set forth in Section 4.2.
       Notwithstanding the foregoing, (i) the Company may grant options to
       acquire shares of Company Common Stock to both present and future
       employees under the Company Stock Option Plan, (ii) the Company may offer
       and sell shares of Company Common Stock in one or more private
       transactions at a price of not less than $1.00 per share to an aggregate
       maximum of $4,175,000 and may issue warrants to acquire shares of Company
       Common Stock in customary amounts to placement agents who facilitate such
       sales, (iii) the Company may issue shares of Company Common Stock as well
       as warrants to purchase shares of Company Common Stock to non-affiliated
       persons and entities for the purposes of purchasing or licensing
       technology which, in the reasonable judgment of the Company's Board of
       Directors, is necessary or desirable for the Company's growth and
       development, (iv) the Company may issue up to an aggregate maximum of
       100,000 shares of Company Common Stock to entities which currently
       provide services to the Company for future services, and (v) the Company
       may issue Company

                                      B-26
<PAGE>
       Common Stock and/or options or rights to acquire Company Common Stock
       and/or warrants to acquire shares of Company Common Stock in satisfaction
       of the preemptive rights described in Section 4.2(c);

    (f) The Company shall have furnished to Unity such additional certificates
       and other customary closing documents as Unity may have reasonably
       requested as to any of the conditions set forth in this Section 8.3;

    (g) Since the date of this Agreement there shall not have been any Material
       Adverse Effect with respect to the Company, the likelihood of which was
       not previously disclosed to Unity by the Company;

    (h) Unity shall have received Lock-Up Agreements from each officer, director
       and principal stockholder of the Company and their respective Affiliates
       (collectively, the "Company Principals") in substantially the form
       attached as Schedule 8.3(h) hereto;

    (i) The Company shall have furnished to Unity evidence, reasonably
       satisfactory to Unity, that each of the purchasers of Common Stock
       pursuant to that certain Private Placement Memorandum, dated September 2,
       1998, as supplemented, between the Company and Spencer Trask Securities
       Incorporated has executed, or shall be deemed to have executed Lock-Up
       Agreements upon substantially identical terms as those contemplated to be
       executed by each of the Company Principals pursuant to subparagraph (h)
       of this Section 8.3;

    (j) The holders of no greater than ten percent (10%) in the aggregate in
       interest of Company Common Stock shall have perfected their statutory
       dissenters' rights with respect to the Merger and have Dissenters' Stock;

    (k) Unity shall have received a copy of the Voting Agreement signed by each
       of the Company Principals; and

    (l) All corporate proceedings of the Company in connection with the Merger
       and the other transactions contemplated by this Agreement and all
       agreements, instruments, certificates and other documents delivered to
       Unity by or on behalf of the Company pursuant to this Agreement shall be
       in substantially the form called for hereunder or otherwise reasonably
       satisfactory to Unity and its counsel.

                                   ARTICLE IX
                       TERMINATION, AMENDMENT AND WAIVER

    SECTION 9.1  TERMINATION.  This Agreement may be terminated at any time
prior to the Closing Date, whether before or after approval by the stockholders
of the Company and/or Unity:

    (a) by mutual consent in writing of Unity and the Company;

    (b) unilaterally upon written notice by Unity to the Company upon the
       occurrence of a Material Adverse Effect with respect to the Company, the
       likelihood of which was not previously disclosed to Unity in writing by
       the Company prior to the date of this Agreement;

    (c) unilaterally upon written notice by the Company to Unity upon the
       occurrence of a Material Adverse Effect with respect to Unity, the
       likelihood of which was not previously disclosed to the Company in
       writing by Unity prior to the date of this Agreement;

    (d) unilaterally upon written notice by Unity to the Company in the event of
       the Company's material breach of any material representation or warranty
       of the Company contained in this Agreement (unless such breach shall have
       been cured by the Company within ten (10) days after the giving of such
       notice by Unity), or the Company's willful failure to comply with or

                                      B-27
<PAGE>
       satisfy any material covenant or condition of the Company contained in
       this Agreement, or if the Company fails to obtain the Company
       Stockholders' Approval;

    (e) unilaterally upon written notice by the Company to Unity in the event of
       Unity's material breach of any material representation or warranty
       contained in this Agreement (unless such breach shall have been cured by
       Unity within ten (10) days after the giving of such notice by the
       Company), or Unity's willful failure to comply with or satisfy any
       material covenant or condition of Unity contained in this Agreement, or
       if Unity fails to obtain the Unity Stockholders' Approval; or

    (f) unilaterally upon written notice by either Unity or the Company to the
       other if the Merger is not consummated for any reason not specified or
       referred to in the preceding provisions of this Section 9.1 by the close
       of business on June 30, 1999.

    SECTION 9.2  EFFECT OF TERMINATION.  In the event of termination of this
Agreement by either Unity or the Company, as provided in Section 9.1, this
Agreement shall forthwith become void and there shall be no further obligation
on the part of either the Company or Unity (except as set forth in the
penultimate sentence of Section 7.1 (with respect to confidential and non-public
information) and Section 9.5, which shall survive such termination). Nothing in
this Section 9.2 shall relieve any party from liability for any breach of this
Agreement.

    SECTION 9.3  AMENDMENT.  This Agreement may not be amended except by an
instrument in writing signed on behalf of each of the parties hereto and in
compliance with applicable law.

    SECTION 9.4  WAIVER.  At any time prior to the Effective Time, the parties
hereto may (i) extend the time for the performance of any of the obligations or
other acts of the other parties hereto, (ii) waive any inaccuracies in the
representations and warranties contained herein or in any document delivered
pursuant thereto and (iii) waive compliance with any of the agreements or
conditions contained herein. Any agreement on the part of a party hereto to any
such extension or waiver shall be valid only if set forth in an instrument in
writing signed on behalf of such party.

    SECTION 9.5  EXPENSES.  Whether or not the Merger is consummated, all costs
and expenses incurred in connection with this Agreement and the transactions
contemplated hereby shall be paid by the party incurring such costs and
expenses, except as otherwise specifically provided for herein.

                                   ARTICLE X
                               GENERAL PROVISIONS

    SECTION 10.1  NON-SURVIVAL OF REPRESENTATIONS AND WARRANTIES.  The
respective representations, obligations, agreements and promises of the parties
contained in this Agreement and in any schedule, certificate or other document
delivered pursuant to this Agreement, other than those that by their terms are
to be performed or otherwise are to apply after the Effective Time, shall
terminate as of, and shall not survive, the Effective Time.

    SECTION 10.2  NOTICES.  All notices and other communications hereunder shall
be in writing and shall be deemed given if delivered personally (effective upon
delivery), mailed by registered or certified mail (return receipt requested)
(effective three business days after mailing), sent by a reputable overnight
courier service for next business day delivery (effective the next business day)
or sent via facsimile (effective upon receipt of the telecopy in complete,
readable form) to the parties at the following addresses (or at such other
address for a party as shall be specified by like notice):

                                      B-28
<PAGE>
    (a) If to Unity to:

       Unity First Acquisition Corp.
       245 Fifth Avenue
       New York, New York 10016
       Attention: President
       FAX: (212) 582-3293
       with a copy to:
       Cooperman Levitt Winikoff Lester & Newman, P.C.
       800 Third Avenue
       New York, New York 10022
       Attention: Ira I. Roxland, Esq.
       FAX: (212) 755-2839

    (b) If to the Company, to:

       GraphOn Corporation
       150 Harrison Avenue
       Campbell, California 95008
       Attention: President
       FAX: (408) 370-5037

       with a copy to:
       Brobeck, Phleger & Harrison LLP
       Two Embarcadero Place
       2200 Geng Road
       Palo Alto, California 94303
       Attention: Curtis L. Mo, Esq. and
                Michael F. Cyran, Esq.
                FAX: (650) 496-2885

    SECTION 10.3  INTERPRETATION.  The headings contained in this Agreement are
for reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement.

    SECTION 10.4  MISCELLANEOUS.  This Agreement (including the documents and
instruments referred to herein) (i) constitutes the entire agreement and
supersedes all other prior agreements and understandings, both written and oral,
among the parties, or any of them, with respect to the subject matter hereof
(including without limitation that certain letter of intent dated December 10,
1998 between Unity and the Company);(ii) shall not be assigned by contract,
operation of law or otherwise, and any attempt to do so shall be void; and (iii)
shall be governed in all respects, including validity, interpretation and
effect, by the laws of the State of New York (without giving effect to the
provisions thereof relating to conflicts of law).

    SECTION 10.5  COUNTERPARTS.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
shall constitute one and the same agreement. In pleading or proving this
Agreement, it shall not be necessary to produce or account for more than one
fully executed original.

    SECTION 10.6  PARTIES IN INTEREST.  This Agreement shall be binding upon and
inure solely to the benefit of each party hereto, and nothing in this Agreement,
express or implied, is intended to

                                      B-29
<PAGE>
confer upon any other person any rights or remedies of any nature whatsoever
under or by reason of this Agreement.

    SECTION 10.7  CAPTIONS.  The captions of sections and subsections of this
Agreement are for reference only, and shall not affect the interpretation or
construction of this Agreement.

    IN WITNESS WHEREOF, Unity and the Company have caused this Agreement to be
signed by their respective officers thereunto duly authorized as of the date
first written above.

<TABLE>
<S>                                          <C>        <C>
                                             UNITY FIRST ACQUISITION CORP.

                                             By:        /s/ LAWRENCE BURSTEIN
                                                        ------------------------------------------
                                                        Name: Lawrence Burstein
                                                        Title: President

                                             GRAPHON CORPORATION

                                             By:        /s/ WALTER KELLER
                                                        ------------------------------------------
                                                        Name: Walter Keller
                                                        Title: President
</TABLE>

                                      B-30
<PAGE>
                                   AMENDMENT

    The undersigned, by their execution of this instrument as of June 1, 1999,
hereby amend the Agreement and Plan of Merger and Reorganization dated as of
February 1, 1999 (the "Original Agreement") between Unity First Acquisition
Corp. and GraphOn Corporation as set forth below:

    1.  Clause (b) of Section 1.2(b) of the Original Agreement is amended by
       replacing the phrase "an Agreement of Merger, in the form set forth as
       Exhibit II" with the phrase "Certificate of Merger in the form set forth
       as Exhibit I".

    2.  Section 2.1 of the Original Agreement is hereby amended by replacing the
       phrase "Certificate of Incorporation of Unity as in effect immediately
       prior to the Effective Time" with the phrase "Amended and Restated
       Certificate of Incorporation of Unity in the form set forth as Exhibit II
       hereto."

    3.  Section 2.2 of the Original Agreement is hereby amended by replacing the
       phrase "By-laws of Unity" with the phrase "By-laws of Unity as amended
       and".

    4.  Section 9.1(f) of the Original Agreement is hereby amended by replacing
       the date "June 30, 1999" with the date "July 31, 1999".

    5.  Exhibit II to the Original Agreement is hereby deleted and replaced with
       Exhibit II annexed hereto.

    The Original Agreement, as amended hereby, is ratified and confirmed and
shall remain in full force and effect.

<TABLE>
<S>                                            <C>
UNITY FIRST ACQUISITION CORP.                  GRAPHON CORPORATION

By: /s/ LAWRENCE BURSTEIN                      By: /s/ WALTER KELLER
   ---------------------                       ---------------------
   Name: Lawrence Burstein                     Name: Walter Keller
   Title: President                            Title: President
</TABLE>

                                      B-31
<PAGE>
                                                                       EXHIBIT C

                              AMENDED AND RESTATED
                          CERTIFICATE OF INCORPORATION
                                       OF
                         UNITY FIRST ACQUISITION CORP.

    The undersigned, Walter Keller and Thomas A. Bevilacqua, hereby certify
that:

    ONE: They are the duly elected and acting President and Secretary,
respectively, of said corporation.

    TWO: The Certificate of Incorporation of said corporation was originally
filed in the Office of the Secretary of State of the State of Delaware on May
30, 1997 and the Restated Certificate of Incorporation of said corporation was
originally filed in such office on             .

    THREE: The Certificate of Incorporation of said corporation shall be amended
and restated to read in full as follows:

                                   ARTICLE I

    The name of this corporation is GraphOn Corporation (the "Corporation").

                                   ARTICLE II

    The address of the Corporation's registered office in the State of Delaware
is 1013 Centre Road, City of Wilmington, County of New Castle 19801. The name of
the Corporation's registered agent at such address is the Corporation Service
Company.

                                  ARTICLE III

    The nature of the business or purposes to be conducted or promoted is to
engage in any lawful act or activity for which corporations may be organized
under the General Corporation Law of the State of Delaware (the "GCL").

                                   ARTICLE IV

    The Corporation is authorized to issue two classes of stock to be
designated, respectively, "Common Stock" and "Preferred Stock." The total number
of shares that the Corporation is authorized to issue is Fifty Million
(50,000,000). Forty Five Million (45,000,000) shares shall be Common Stock, par
value $0.0001 per share, and Five Million (5,000,000) shares shall be Preferred
Stock, par value $0.01 per share.

    The Preferred Stock may be issued from time to time in one or more series,
without further stockholder approval. The Board of Directors of the Corporation
is hereby authorized to fix or alter the rights, preferences, privileges and
restrictions granted to or imposed upon each series of Preferred Stock, and the
number of shares constituting any such series and the designation thereof, or of
any of them. The rights, privileges, preferences and restrictions of any such
additional series may be subordinated to, PARI PASSU with (including, without
limitation, inclusion in provisions with respect to liquidation and acquisition
preferences, redemption and/or approval of matters by vote), or senior to any of
those of any present or future class or series of Preferred Stock or Common
Stock. The Board of Directors is also authorized to increase or decrease the
number of shares of any series prior or

                                      C-1
<PAGE>
subsequent to the issue of that series, but not below the number of shares of
such series then outstanding. In case the number of shares of any series shall
be so decreased, the shares constituting such decrease shall resume the status
which they had prior to the adoption of the resolution originally fixing the
number of shares of such series.

                                   ARTICLE V

    In furtherance and not in limitation of the powers conferred by statute, the
Board of Directors is expressly authorized to make, repeal, alter, amend and
rescind any or all of the Bylaws of the Corporation. In addition, the Bylaws may
be amended by the affirmative vote of holders of at least 66 2/3% of the
outstanding shares of voting stock of the Corporation entitled to vote at an
election of directors.

                                   ARTICLE VI

    The number of directors of the Corporation shall be determined by resolution
of the Board of Directors.

    Elections of directors need not be by written ballot unless the Bylaws of
the Corporation shall so provide. Advance notice of stockholder nominations for
the election of directors and of any other business to be brought before any
meeting of the stockholders shall be given in the manner provided in the Bylaws
of this Corporation.

    At each annual meeting of stockholders, directors of the Corporation shall
be elected to hold office until the expiration of the term for which they are
elected, or until their successors have been duly elected and qualified; except
that if any such election shall not be so held, such election shall take place
at a stockholders' meeting called and held in accordance with the GCL.

    The directors of the Corporation shall be divided into three (3) classes as
nearly equal in size as is practicable, hereby designated Class I, Class II and
Class III. For the purposes hereof, the initial Class I, Class II and Class III
directors shall be those directors so designated by a resolution of the Board of
Directors. At the first annual meeting of stockholders following the adoption of
this Certificate of Incorporation, the term of office of the Class I directors
shall expire and Class I directors shall be elected for a full term of three (3)
years. At the second annual meeting of stockholders following the closing of the
initial public offering of the Corporation's Common Stock, the term of office of
the Class II directors shall expire and Class II directors shall be elected for
a full term of three (3) years. At the third annual meeting of stockholders
following the initial public offering of the Corporation's Common Stock, the
term of office of the Class III directors shall expire and Class III directors
shall be elected for a full term of three (3) years. At each succeeding annual
meeting of stockholders, directors shall be elected for a full term of three (3)
years to succeed the directors of the class whose terms expire at such annual
meeting. If the number of directors is hereafter changed, each director then
serving as such shall nevertheless continue as a director of the Class of which
he is a member until the expiration of his current term and any newly created
directorships or decrease in directorships shall be so apportioned among the
classes as to make all classes as nearly equal in number as is practicable.

    Vacancies occurring on the Board of Directors for any reason may be filled
by vote of a majority of the remaining members of the Board of Directors, even
if less than a quorum, at any meeting of the Board of Directors. A person so
elected by the Board of Directors to fill a vacancy shall hold office for the
remainder of the full term of the director for which the vacancy was created or
occurred and until such director's successor shall have been duly elected and
qualified. A director may be removed from office by the affirmative vote of the
holders of 66 2/3% of the outstanding shares of voting stock of the Corporation
entitled to vote at an election of directors.

                                      C-2
<PAGE>
                                  ARTICLE VII

    Stockholders of the Corporation shall take action by meetings held pursuant
to this Amended and Restated Certificate of Incorporation and the Bylaws and
shall have no right to take any action by written consent without a meeting.
Meetings of stockholders may be held within or without the State of Delaware, as
the Bylaws may provide. Special meetings of the stockholders, for any purpose or
purposes, may be called only by the Board of Directors of the Corporation or by
the holders of at least 50% of the outstanding shares of capital stock of the
Corporation. The books of the Corporation may be kept (subject to any provision
contained in the statutes) outside the State of Delaware at such place or places
as may be designated from time to time by the Board of Directors or in the
Bylaws of the Corporation.

                                  ARTICLE VIII

    To the fullest extent permitted by applicable law, this Corporation is
authorized to provide indemnification of (and advancement of expenses to)
directors, officers, employees and agents (and any other persons to which
Delaware law permits this Corporation to provide indemnification) through Bylaw
provisions, agreements with such agents or other persons, vote of stockholders
or disinterested directors or otherwise, in excess of the indemnification and
advancement otherwise permitted by Section 145 of the GCL, subject only to
limits created by applicable Delaware law (statutory or non-statutory), with
respect to action for breach of duty to the Corporation, its stockholders, and
others.

    No director of the Corporation shall be personally liable to the Corporation
or any stockholder for monetary damages for breach of fiduciary duty as a
director, except for any matter in respect of which such director shall be
liable under Section 174 of the GCL or any amendment thereto or shall be liable
by reason that, in addition to any and all other requirements for such
liability, such director (1) shall have breached the director's duty or loyalty
to the Corporation or its stockholders, (2) shall have acted in manner involving
intentional misconduct or a knowing violation of law or, in failing to act,
shall have acted in a manner involving intentional misconduct or a knowing
violation of law, or (3) shall have derived an improper personal benefit. If the
GCL is hereafter amended to authorize the further elimination or limitation of
the liability of a director, the liability of a director of the Corporation
shall be eliminated or limited to the fullest extent permitted by the GCL, as so
amended.

    Each person who was or is made a party or is threatened to be made a party
to or is in any way involved in any threatened, pending or completed action,
suit or proceeding, whether civil, criminal, administrative or investigative
(hereinafter a "proceeding"), including any appeal therefrom, by reason of the
fact that he or she, or a person of whom he or she is the legal representative,
is or was a director or officer of the Corporation or a direct or indirect
subsidiary of the Corporation, or is or was serving at the request of the
Corporation as a director or officer of another entity or enterprise, or was a
director or officer of a foreign or domestic corporation which was predecessor
corporation of the Corporation or of another entity or enterprise at the request
of such predecessor corporation, shall be indemnified and held harmless by the
Corporation, and the Corporation shall advance all expenses incurred by any such
person in defense of any such proceeding prior to its final determination, to
the fullest extent authorized by the GCL. In any proceeding against the
Corporation to enforce these rights, such person shall be presumed to be
entitled to indemnification and the Corporation shall have the burden of proving
that such person has not met the standards of conduct for permissible
indemnification set forth in the GCL. The rights to indemnification and
advancement of expenses conferred by this Article VIII shall be presumed to have
been relied upon by the directors and officers of the Corporation in serving or
continuing to serve the Corporation and shall be enforceable as contract rights.
Said rights shall not be exclusive of any other rights to which those seeking
indemnification may otherwise be entitled. The Corporation may, upon written
demand presented by a director or officer of the Corporation or of a direct or
indirect subsidiary of the Corporation, or by a person serving at the request of
the Corporation as a director or officer of another entity or enterprise, enter
into contracts

                                      C-3
<PAGE>
to provide such persons with specified rights to indemnification, which
contracts may confer rights and protections to the maximum extent permitted by
the GCL, as amended and in effect from time to time.

    If a claim under this Article VIII is not paid in full by the Corporation
within sixty (60) days after a written claim has been received by the
Corporation, the claimant may at any time thereafter bring suit against the
Corporation to recover the unpaid amount of the claim and, if successful in
whole or in part, the claimant shall be entitled to be paid also the expenses of
prosecuting such claim. It shall be a defense to any such action (other than an
action brought to enforce the right to be advanced expenses incurred in
defending any proceeding prior to its final disposition where the required
undertaking, if any, has been tendered to the Corporation) that the claimant has
not met the standards of conduct which make it permissible under the GCL for the
Corporation to indemnify the claimant for the amount claimed, but the claimant
shall be presumed to be entitled to indemnification and the Corporation shall
have the burden of proving that the claimant has not met the standards of
conduct for permissible indemnification set forth in the GCL.

    If the GCL is hereafter amended to permit the Corporation to provide broader
indemnification rights than said law permitted the Corporation to provide prior
to such amendment, the indemnification rights conferred by this Article VIII
shall be broadened to the fullest extent permitted by the GCL, as so amended.

                                   ARTICLE IX

    The Corporation reserves the right to amend, alter, change or repeal any
provision contained in this Amended and Restated Certificate of Incorporation,
in the manner now or hereafter prescribed by statute, and all rights conferred
upon stockholders herein are granted subject to this reservation.
Notwithstanding the foregoing, the provisions set forth in Articles V, VI, VII,
VIII and IX of this Amended and Restated Certificate of Incorporation may not be
repealed or amended in any respect without the affirmative vote of holders at
least 66 2/3% of the outstanding voting stock of the Corporation entitled to
vote at election of directors.

    FOUR: The foregoing amendment and restatement has been duly adopted by the
Corporation's Board of Directors in accordance with the applicable provisions of
Sections 242 and 245 of the General Corporation Law of the State of Delaware.

    FIFTH: The foregoing amendment and restatement was approved by the holders
of the requisite number of shares of the Corporation in accordance with Section
228 of the General Corporation Law of the State of Delaware.

    IN WITNESS WHEREOF, the undersigned have executed this certificate on
            , 1999.

                                  -------------------------
                                  Walter Keller
                                  President
                                  -------------------------
                                  Thomas A. Bevilacqua
                                  Secretary

                                      C-4
<PAGE>
                                                                       EXHIBIT D

              SECTION 262 OF THE DELAWARE GENERAL CORPORATION LAW
                          SECTION 262 APPRAISAL RIGHTS

    (a) Any stockholder of a corporation of this State who holds shares of stock
on the date of the making of a demand pursuant to subsection (d) of this section
with respect to such shares, who continuously holds such shares through the
effective date of the merger or consolidation, who has otherwise complied with
subsection (d) of this section and who has neither voted in favor of the merger
or consolidation nor consented thereto in writing pursuant to Section 228 of
this title shall be entitled to an appraisal by the Court of Chancery of the
fair value of the stockholder's shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section,
the word "stockholder" means a holder of record of stock in a stock corporation
and also a member of record of a nonstock corporation; the words "stock" and
"share" mean and include what is ordinarily meant by those words and also
membership or membership interest of a member of a nonstock corporation; and the
words "depository receipt" mean a receipt or other instrument issued by a
depository representing an interest in one or more shares, or fractions thereof,
solely of stock of a corporation, which stock is deposited with the depository.

    (b) Appraisal rights shall be available for the shares of any class or
series of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to Section 251 (other than a merger effected pursuant to
Section 251(g) of this title), Section 252, Section 254, Section 257, Section
258, Section 263 or Section 264 of this title:

        (1) Provided, however, that no appraisal rights under this section shall
    be available for the shares of any class or series of stock, which stock, or
    depository receipts in respect thereof, at the record date fixed to
    determine the stockholders entitled to receive notice of and to vote at the
    meeting of stockholders to act upon the agreement of merger or
    consolidation, were either (i) listed on a national securities exchange or
    designated as a national market system security on an interdealer quotation
    system by the National Association of Securities Dealers, Inc. or (ii) held
    of record by more than 2,000 holders; and further provided that no appraisal
    rights shall be available for any shares of stock of the constituent
    corporation surviving a merger if the merger did not require for its
    approval the vote of the stockholders of the surviving corporation as
    provided in subsection (f) of Section 251 of this title.

        (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
    under this section shall be available for the shares of any class or series
    of stock of a constituent corporation if the holders thereof are required by
    the terms of an agreement of merger or consolidation pursuant to
    SectionSection251, 252, 254, 257, 258, 263 and 264 of this title to accept
    for such stock anything except:

           a.  Shares of stock of the corporation surviving or resulting from
       such merger or consolidation, or depository receipts in respect thereof;

           b.  Shares of stock of any other corporation, or depository receipts
       in respect thereof, which shares of stock (or depository receipts in
       respect thereof) or depository receipts at the effective date of the
       merger or consolidation will be either listed on a national securities
       exchange or designated as a national market system security on an
       interdealer quotation system by the National Association of Securities
       Dealers, Inc. or held of record by more than 2,000 holders;

           c.  Cash in lieu of fractional shares or fractional depository
       receipts described in the foregoing subparagraphs a. and b. of this
       paragraph; or

           d.  Any combination of the shares of stock, depository receipts and
       cash in lieu of fractional shares or fractional depository receipts
       described in the foregoing subparagraphs a., b. and c. of this paragraph.

                                      D-1
<PAGE>
        (3) In the event all of the stock of a subsidiary Delaware corporation
    party to a merger effected under Section 253 of this title is not owned by
    the parent corporation immediately prior to the merger, appraisal rights
    shall be available for the shares of the subsidiary Delaware corporation.

    (c) Any corporation may provide in its certificate of incorporation that
appraisal rights under this section shall be available for the shares of any
class or series of its stock as a result of an amendment to its certificate of
incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation. If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.

    (d) Appraisal rights shall be perfected as follows:

        (1) If a proposed merger or consolidation for which appraisal rights are
    provided under this section is to be submitted for approval at a meeting of
    stockholders, the corporation, not less than 20 days prior to the meeting,
    shall notify each of its stockholders who was such on the record date for
    such meeting with respect to shares for which appraisal rights are available
    pursuant to subsections (b) or (c) hereof that appraisal rights are
    available for any or all of the shares of the constituent corporations, and
    shall include in such notice a copy of this section. Each stockholder
    electing to demand the appraisal of such stockholder's shares shall deliver
    to the corporation, before the taking of the vote on the merger or
    consolidation, a written demand for appraisal of such stockholder's shares.
    Such demand will be sufficient if it reasonably informs the corporation of
    the identity of the stockholder and that the stockholder intends thereby to
    demand the appraisal of such stockholder's shares. A proxy or vote against
    the merger or consolidation shall not constitute such a demand. A
    stockholder electing to take such action must do so by a separate written
    demand as herein provided. Within 10 days after the effective date of such
    merger or consolidation, the surviving or resulting corporation shall notify
    each stockholder of each constituent corporation who has complied with this
    subsection and has not voted in favor of or consented to the merger or
    consolidation of the date that the merger or consolidation has become
    effective; or

        (2) If the merger or consolidation was approved pursuant to Section 228
    or Section 253 of this title, each constituent corporation, either before
    the effective date of the merger or consolidation or within 10 days
    thereafter, shall notify each of the holders of any class or series of stock
    of such constituent corporation who are entitled to appraisal rights of the
    approval of the merger or consolidation and that appraisal rights are
    available for any or all of the shares of such class or series of stock of
    such constituent corporation, and shall include in such notice a copy of
    this section; provided that, if the notice is given on or after the
    effective date of the merger or consolidation, such notice shall be given by
    the surviving or resulting corporation to all such holders of any class or
    series of stock of a constituent corporation that are entitled to appraisal
    rights. Such notice may, and, if given on or after the effective date of the
    merger or consolidation, shall, also notify such stockholders of the
    effective date of merger or consolidation. Any stockholder entitled to
    appraisal rights may, within 20 days after the date of mailing of such
    notice, demand in writing from the surviving or resulting corporation the
    appraisal of such holder's shares. Such demand will be sufficient if it
    reasonably informs the corporation of the identity of the stockholder and
    that the stockholder intends thereby to demand the appraisal of such
    holder's shares. If such notice did not notify stockholders of the effective
    date of the merger or consolidation, either (i) each such constituent
    corporation shall send a second notice before the effective date of the
    merger or consolidation notifying each of the holders of any class or series
    of stock of such constituent corporation that are entitled to appraisal
    rights of the effective date of the merger or consolidation or (ii) the
    surviving or resulting corporation shall send such a second notice to all
    such holders on or within 10 days after such effective date; provided,
    however, that if such second notice is sent more than 20 days following the
    sending of the first notice, such second notice need only be sent to each
    stockholder who is entitled to appraisal rights and who has demanded
    appraisal of such holder's shares in accordance with this

                                      D-2
<PAGE>
    subsection. An affidavit of the secretary or assistant secretary or of the
    transfer agent of the corporation that is required to give either notice
    that such notice has been given shall, in the absence of fraud, be prima
    facie evidence of the facts stated therein. For purposes of determining the
    stockholders entitled to receive either notice, each constituent corporation
    may fix, in advance, a record date that shall be not more than 10 days prior
    to the date the notice is given, provided, that if the notice is given on or
    after the effective date of the merger or consolidation, the record date
    shall be such effective date. If no record date is fixed and the notice is
    given prior to the effective date, the record date shall be the close of
    business on the day next preceding the day on which the notice is given.

    (e) Within 120 days after the effective date of the merger or consolidation,
the surviving or resulting corporation or any stockholder who has complied with
subsections (a) and (d) hereof and who is otherwise entitled to appraisal
rights, may file a petition in the Court of Chancery demanding a determination
of the value of the stock of all such stockholders. Notwithstanding the
foregoing, at any time within 60 days after the effective date of the merger or
consolidation, any stockholder shall have the right to withdraw such
stockholder's demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
such stockholder's written request for such a statement is received by the
surviving or resulting corporation or within 10 days after expiration of the
period for delivery of demands for appraisal under subsection (d) hereof,
whichever is later.

    (f) Upon the filing of any such petition by a stockholder, service of a copy
thereof shall be made upon the surviving or resulting corporation, which shall
within 20 days after such service file in the office of the Register in Chancery
in which the petition was filed a duly verified list containing the names and
addresses of all stockholders who have demanded payment for their shares and
with whom agreements as to the value of their shares have not been reached by
the surviving or resulting corporation. If the petition shall be filed by the
surviving or resulting corporation, the petition shall be accompanied by such a
duly verified list. The Register in Chancery, if so ordered by the Court, shall
give notice of the time and place fixed for the hearing of such petition by
registered or certified mail to the surviving or resulting corporation and to
the stockholders shown on the list at the addresses therein stated. Such notice
shall also be given by 1 or more publications at least 1 week before the day of
the hearing, in a newspaper of general circulation published in the City of
Wilmington, Delaware or such publication as the Court deems advisable. The forms
of the notices by mail and by publication shall be approved by the Court, and
the costs thereof shall be borne by the surviving or resulting corporation.

    (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights. The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as to
such stockholder.

    (h) After determining the stockholders entitled to an appraisal, the Court
shall appraise the shares, determining their fair value exclusive of any element
of value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors, including the rate of
interest which the surviving or resulting corporation would have

                                      D-3
<PAGE>
had to pay to borrow money during the pendency of the proceeding. Upon
application by the surviving or resulting corporation or by any stockholder
entitled to participate in the appraisal proceeding, the Court may, in its
discretion, permit discovery or other pretrial proceedings and may proceed to
trial upon the appraisal prior to the final determination of the stockholder
entitled to an appraisal. Any stockholder whose name appears on the list filed
by the surviving or resulting corporation pursuant to subsection (f) of this
section and who has submitted such stockholder's certificates of stock to the
Register in Chancery, if such is required, may participate fully in all
proceedings until it is finally determined that such stockholder is not entitled
to appraisal rights under this section.

    (i) The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto. Interest may be simple or compound, as the Court
may direct. Payment shall be so made to each such stockholder, in the case of
holders of uncertificated stock forthwith, and the case of holders of shares
represented by certificates upon the surrender to the corporation of the
certificates representing such stock. The Court's decree may be enforced as
other decrees in the Court of Chancery may be enforced, whether such surviving
or resulting corporation be a corporation of this State or of any state.

    (j) The costs of the proceeding may be determined by the Court and taxed
upon the parties as the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.

    (k) From and after the effective date of the merger or consolidation, no
       stockholder who has demanded appraisal rights as provided in subsection
       (d) of this section shall be entitled to vote such stock for any purpose
       or to receive payment of dividends or other distributions on the stock
       (except dividends or other distributions payable to stockholders of
       record at a date which is prior to the effective date of the merger or
       consolidation); provided, however, that if no petition for an appraisal
       shall be filed within the time provided in subsection (e) of this
       section, or if such stockholder shall deliver to the surviving or
       resulting corporation a written withdrawal of such stockholder's demand
       for an appraisal and an acceptance of the merger or consolidation, either
       within 60 days after the effective date of the merger or consolidation as
       provided in subsection (e) of this section or thereafter with the written
       approval of the corporation, then the right of such stockholder to an
       appraisal shall cease. Notwithstanding the foregoing, no appraisal
       proceeding in the Court of Chancery shall be dismissed as to any
       stockholder without the approval of the Court, and such approval may be
       conditioned upon such terms as the Court deems just.

    (l) The shares of the surviving or resulting corporation to which the shares
of such objecting stockholders would have been converted had they assented to
the merger or consolidation shall have the status of authorized and unissued
shares of the surviving or resulting corporation.

                                      D-4
<PAGE>
                                                                       EXHIBIT E

            SECTIONS 1300 - 1312 OF THE CALIFORNIA CORPORATIONS CODE

SECTION 1300. REORGANIZATION OR SHORT-FORM MERGER; DISSENTING SHARES; CORPORATE
  PURCHASE AT FAIR MARKET VALUE; DEFINITIONS

    (a) If the approval of the outstanding shares (Section 152) of a corporation
is required for a reorganization under subdivisions (a) and (b) or subdivision
(e) or (f) of Section 1201, each shareholder of the corporation entitled to vote
on the transaction and each shareholder of a subsidiary corporation in a
short-form merger may, by complying with this chapter, require the corporation
in which the shareholder holds shares to purchase for cash at their fair market
value the shares owned by the shareholder which are dissenting shares as defined
in subdivision (b). The fair market value shall be determined as of the day
before the first announcement of the terms of the proposed reorganization or
short-form merger, excluding any appreciation or depreciation in consequence of
the proposed action, but adjusted for any stock split, reverse stock split, or
share dividend which becomes effective thereafter.

    (b) As used in this chapter, "dissenting shares" means shares which come
within all of the following descriptions:

        (1) Which were not immediately prior to the reorganization or short-form
    merger either (A) listed on any national securities exchange certified by
    the Commissioner of Corporations under subdivision (o) of Section 25100 or
    (B) listed on the list of OTC margin stocks issued by the Board of Governors
    of the Federal Reserve System, and the notice of meeting of shareholders to
    act upon the reorganization summarizes this section and Sections 1301, 1302,
    1303 and 1304; provided, however, that this provision does not apply to any
    shares with respect to which there exists any restriction on transfer
    imposed by the corporation or by any law or regulation; and provided,
    further, that this provision does not apply to any class of shares described
    in SUBPARAGRAPH (A) or (B) if demands for payment are filed with respect to
    5 percent or more of the outstanding shares of that class.

        (2) Which were outstanding on the date for the determination of
    shareholders entitled to vote on the reorganization and (A) were not voted
    in favor of the reorganization or, (B) if described in SUBPARAGRAPH (A) or
    (B) of paragraph (1) (without regard to the provisos in that paragraph),
    were voted against the reorganization, or which were held of record on the
    effective date of a short-form merger; provided, however, that ***
    SUBPARAGRAPH (A) rather than *** SUBPARAGRAPH (B) of this paragraph applies
    in any case where the approval required by Section 1201 is sought by written
    consent rather than at a meeting.

        (3) Which the dissenting shareholder has demanded that the corporation
    purchase at their fair market value, in accordance with Section 1301.

        (4) Which the dissenting shareholder has submitted for endorsement, in
    accordance with Section 1302.

        (c) As used in this chapter, "dissenting shareholder" means the
    recordholder of dissenting shares and includes a transferee of record.

SECTION 1301. NOTICE TO HOLDERS OF DISSENTING SHARES IN REORGANIZATIONS; DEMAND
  FOR PURCHASE; TIME; CONTENTS

    (a) If, in the case of a reorganization, any shareholders of a corporation
have a right under Section 1300, subject to compliance with paragraphs (3) and
(4) of subdivision (b) thereof, to require the corporation to purchase their
shares for cash, such corporation shall mail to each such shareholder

                                      E-1
<PAGE>
a notice of the approval of the reorganization by its outstanding shares
(Section 152) within 10 days after the date of such approval, accompanied by a
copy of Sections 1300, 1302, 1303, 1304 and this section, a statement of the
price determined by the corporation to represent the fair market value of the
dissenting shares, and a brief description of the procedure to be followed if
the shareholder desires to exercise the shareholder's right under such sections.
The statement of price constitutes an offer by the corporation to purchase at
the price stated any dissenting shares as defined in subdivision (b) of Section
1300, unless they lose their status as dissenting shares under Section 1309.

    (b) Any shareholder who has a right to require the corporation to purchase
the shareholder's shares for cash under Section 1300, subject to compliance with
paragraphs (3) and (4) of subdivision (b) thereof, and who desires the
corporation to purchase such shares shall make written demand upon the
corporation for the purchase of such shares and payment to the shareholder in
cash of their fair market value. The demand is not effective for any purpose
unless it is received by the corporation or any transfer agent thereof (1) in
the case of shares described in clause (i) or (ii) of paragraph (1) of
subdivision (b) of Section 1300 (without regard to the provisos in that
paragraph), not later than the date of the shareholders' meeting to vote upon
the reorganization, or (2) in any other case within 30 days after the date on
which the notice of the approval by the outstanding shares pursuant to
subdivision (a) or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the shareholder.

    (c) The demand shall state the number and class of the shares held of record
by the shareholder which the shareholder demands that the corporation purchase
and shall contain a statement of what such shareholder claims to be the fair
market value of those shares as of the day before the announcement of the
proposed reorganization or short-form merger. The statement of fair market value
constitutes an offer by the shareholder to sell the shares at such price.

SECTION 1302. SUBMISSION OF SHARES CERTIFICATES FOR ENDORSEMENT; UNCERTIFICATED
  SECURITIES

    Within 30 days after the date on which notice of the approval by the
outstanding shares or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the shareholder, the shareholder shall submit to the corporation at
its principal office or at the office of any transfer agent thereof, (A) IF THE
SHARES ARE CERTIFICATED SECURITIES, the shareholder's certificates representing
any shares which the shareholder demands that the corporation purchase, to be
stamped or endorsed with a statement that the shares are dissenting shares or to
be exchanged for certificates of appropriate denomination so stamped or endorsed
OR (B) IF THE SHARES ARE UNCERTIFICATED SECURITIES, WRITTEN NOTICE OF THE NUMBER
OF SHARES WHICH THE SHAREHOLDER DEMANDS THAT THE CORPORATION PURCHASE. Upon
subsequent transfers of the dissenting shares on the books of the corporation,
the new certificates, initial transaction statement, and other written
statements issued therefor shall bear a like statement, together with the name
of the original dissenting holder of the shares.

SECTION 1303. PAYMENT OF AGREED PRICE WITH INTEREST; AGREEMENT FIXING FAIR
  MARKET VALUE; FILING; TIME OF PAYMENT

    (a) If the corporation and the shareholder agree that the shares are
dissenting shares and agree upon the price of the shares, the dissenting
shareholder is entitled to the agreed price with interest thereon at the legal
rate on judgments from the date of the agreement. Any agreements fixing the fair
market value of any dissenting shares as between the corporation and the holders
thereof shall be filed with the secretary of the corporation.

    (b) Subject to the provisions of Section 1306, payment of the fair market
value of dissenting shares shall be made within 30 days after the amount thereof
has been agreed or within 30 days after any statutory or contractual conditions
to the reorganization are satisfied, whichever is later, and in the case of
certificated securities, subject to surrender of the certificates therefor,
unless provided otherwise by agreement.

                                      E-2
<PAGE>
SECTION 1304. ACTION TO DETERMINE WHETHER SHARES ARE DISSENTING SHARES OR FAIR
  MARKET VALUE; LIMITATION; JOINDER; CONSOLIDATION; DETERMINATION OF ISSUES;
  APPOINTMENT OF APPRAISERS

    (a) If the corporation denies that the shares are dissenting shares, or the
corporation and the shareholder fail to agree upon the fair market value of the
shares, then the shareholder demanding purchase of such shares as dissenting
shares or any interested corporation, within six months after the date on which
notice of the approval by the outstanding shares (Section 152) or notice
pursuant to subdivision (i) of Section 1110 was mailed to the shareholder, but
not thereafter, may file a complaint in the superior court of the proper county
praying the court to determine whether the shares are dissenting shares or the
fair market value of the dissenting shares or both or may intervene in any
action pending on such a complaint.

    (b) Two or more dissenting shareholders may join as plaintiffs or be joined
as defendants in any such action and two or more such actions may be
consolidated.

    (c) On the trial of the action, the court shall determine the issues. If the
status of the shares as dissenting shares is in issue, the court shall first
determine that issue. If the fair market value of the dissenting shares is in
issue, the court shall determine, or shall appoint one or more impartial
appraisers to determine, the fair market value of the shares.

SECTION 1305. REPORT OF APPRAISERS; CONFIRMATION; DETERMINATION BY COURT;
  JUDGEMENT; PAYMENT; APPEAL; COSTS

    (a) If the court appoints an appraiser or appraisers, they shall proceed
forthwith to determine the fair market value per share. Within the time fixed by
the court, the appraisers, or a majority of them, shall make and file a report
in the office of the clerk of the court. Thereupon, on the motion of any party,
the report shall be submitted to the court and considered on such evidence as
the court considers relevant. If the court finds the report reasonable, the
court may confirm it.

    (b) If a majority of the appraisers appointed fail to make and file a report
within 10 days from the date of their appointment or within such further time as
may be allowed by the court or the report is not confirmed by the court, the
court shall determine the fair market value of the dissenting shares.

    (c) Subject to the provisions of Section 1306, judgment shall be rendered
against the corporation for payment of an amount equal to the fair market value
of each dissenting share multiplied by the number of dissenting shares which any
dissenting shareholder who is a party, or who has intervened, is entitled to
require the corporation to purchase, with interest thereon at the legal rate
from the date on which judgment was entered.

    (d) Any such judgment shall be payable forthwith with respect to
uncertificated securities and, with respect to certificated securities, only
upon the endorsement and delivery to the corporation of the certificates for the
shares described in the judgment. Any party may appeal from the judgment.

    (e) The costs of the action, including reasonable compensation to the
appraisers to be fixed by the court, shall be assessed or apportioned as the
court considers equitable, but, if the appraisal exceeds the price offered by
the corporation, the corporation shall pay the costs (including in the
discretion of the court attorneys' fees, fees of expert witnesses and interest
at the legal rate on judgments from the date of compliance with Sections 1300,
1301 and 1302 if the value awarded by the court for the shares is more than 125
percent of the price offered by the corporation under subdivision (a) of Section
1301).

SECTION 1306. PREVENTION OF IMMEDIATE PAYMENT; STATUS AS CREDITORS; INTEREST

    To the extent that the provisions of Chapter 5 prevent the payment to any
holders of dissenting shares of their fair market value, they shall become
creditors of the corporation for the amount thereof

                                      E-3
<PAGE>
together with interest at the legal rate on judgments until the date of payment,
but subordinate to all other creditors in any liquidation proceeding, such debt
to be payable when permissible under the provisions of Chapter 5.

SECTION 1307. DIVIDENDS ON DISSENTING SHARES

    Cash dividends declared and paid by the corporation upon the dissenting
shares after the date of approval of the reorganization by the outstanding
shares (Section 152) and prior to payment for the shares by the corporation
shall be credited against the total amount to be paid by the corporation
therefor.

SECTION 1308. RIGHTS OF DISSENTING SHAREHOLDERS PENDING VALUATION; WITHDRAWAL OF
  DEMAND FOR PAYMENT

    Except as expressly limited in this chapter, holders of dissenting shares
continue to have all the rights and privileges incident to their shares, until
the fair market value of their shares is agreed upon or determined. A dissenting
shareholder may not withdraw a demand for payment unless the corporation
consents thereto.

SECTION 1309. TERMINATION OF DISSENTING SHARE AND SHAREHOLDER STATUS

    Dissenting shares lose their status as dissenting shares and the holders
thereof cease to be dissenting shareholders and cease to be entitled to require
the corporation to purchase their shares upon the happening of any of the
following:

    (a) The corporation abandons the reorganization. Upon abandonment of the
reorganization, the corporation shall pay on demand to any dissenting
shareholder who has initiated proceedings in good faith under this chapter all
necessary expenses incurred in such proceedings and reasonable attorneys' fees.

    (b) The shares are transferred prior to their submission for endorsement in
accordance with Section 1302 or are surrendered for conversion into shares of
another class in accordance with the articles.

    (c) The dissenting shareholder and the corporation do not agree upon the
status of the shares as dissenting shares or upon the purchase price of the
shares, and neither files a complaint or intervenes in a pending action as
provided in Section 1304, within six months after the date on which notice of
the approval by the outstanding shares or notice pursuant to subdivision (i) of
Section 1110 was mailed to the shareholder.

    (d) The dissenting shareholder, with the consent of the corporation,
withdraws the shareholder's demand for purchase of the dissenting shares.

SECTION 1310. SUSPENSION OF RIGHTS TO COMPENSATION OR VALUATION PROCEEDINGS;
  LITIGATION OF SHAREHOLDERS' APPROVAL

    If litigation is instituted to test the sufficiency or regularity of the
votes of the shareholders in authorizing a reorganization, any proceedings under
Sections 1304 and 1305 shall be suspended until final determination of such
litigation.

SECTION 1311. EXEMPT SHARES

    This chapter, except Section 1312, does not apply to classes of shares whose
terms and provisions specifically set forth the amount to be paid in respect to
such shares in the event of a reorganization or merger.

                                      E-4
<PAGE>
SECTION 1312. RIGHT OF DISSENTING SHAREHOLDER TO ATTACK, SET ASIDE OR RESCIND
  MERGER OR REORGANIZATION; RESTRAINING ORDER OR INJUNCTION; CONDITIONS.

    (a) No shareholder of a corporation who has a right under this chapter to
demand payment of cash for the shares held by the shareholder shall have any
right at law or in equity to attack the validity of the reorganization or
short-form merger, or to have the reorganization or short-form merger set aside
or rescinded, except in an action to test whether the number of shares required
to authorize or approve the reorganization have been legally voted in favor
thereof; but any holder of shares of a class whose terms and provisions
specifically set forth the amount to be paid in respect to them in the event of
a reorganization or short-form merger is entitled to payment in accordance with
those terms and provisions or, if the principal terms of the reorganization are
approved pursuant to subdivision (b) of Section 1202, is entitled to payment in
accordance with the terms and provisions of the approved reorganization.

    (b) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, subdivision (a) shall not
apply to any shareholder of such party who has not demanded payment of cash for
such shareholder's shares pursuant to this chapter; but if the shareholder
institutes any action to attack the validity of the reorganization or short-form
merger or to have the reorganization or short-form merger set aside or
rescinded, the shareholder shall not thereafter have any right to demand payment
of cash for the shareholder's shares pursuant to this chapter. The court in any
action attacking the validity of the reorganization or short-form merger or to
have the reorganization or short-form merger set aside or rescinded shall not
restrain or enjoin the consummation of the transaction except upon 10 days'
prior notice to the corporation and upon a determination by the court that
clearly no other remedy will adequately protect the complaining shareholder or
the class of shareholders of which such shareholder is a member.

    (c) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, in any action to attack the
validity of the reorganization or short-form merger or to have the
reorganization or short-form merger set aside or rescinded, (1) a party to a
reorganization or short-form merger which controls another party to the
reorganization or short-form merger shall have the burden of proving that the
transaction is just and reasonable as to the shareholders of the controlled
party, and (2) a person who controls two or more parties to a reorganization
shall have the burden of proving that the transaction is just and reasonable as
to the shareholders of any party so controlled.

                                      E-5
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

    Article SIXTH of the Restated Certificate of Incorporation of Unity First
Acquisition Corp. (the "registrant") provides with respect to the
indemnification of directors and officers that the registrant shall indemnify to
the fullest extent permitted by Sections 102(b)(7) and 145 of the Delaware
General Corporation Law, as amended from time to time, each person that such
Sections grant the registrant the power to indemnify. Article SIXTH of the
Restated Certificate of Incorporation of the registrant also provides that no
director shall be liable to the registrant or any of its stockholders for
monetary damages for breach of fiduciary duty as a director, except with respect
to (1) a breach of the director's duty of loyalty to the registrant or its
stockholders, (2) acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (3) liability under
Section 174 of the Delaware General Corporation Law or (4) a transaction from
which the director derived an improper personal benefit, it being the intention
of the foregoing provision to eliminate the liability of the registrant's
directors to the registrant or its stockholders to the fullest extent permitted
by Section 102(b)(7) of Delaware General Corporation Law, as amended from time
to time.

ITEM 21. EXHIBITS AND FINANCIAL STATEMENTS SCHEDULES.

    (a) Exhibits


<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER     DESCRIPTION OF EXHIBIT
- -----------  -------------------------------------------------------------------------------------------------------
<C>          <S>
       2.1   Agreement and Plan of Merger and Reorganization dated as of February 1, 1999, between Registrant and
             GraphOn Corporation (included as Exhibit B to the joint proxy statement/ prospectus which forms a part
             of this Registration Statement (the "Prospectus"))

       3.1   Restated Certificate of Incorporation of Registrant(1)

       3.2   Bylaws of Registrant(1)

       3.3   Second Amended and Restated Articles of Incorporation of GraphOn(2)

       3.4   Amended and Restated Bylaws of GraphOn(2)

       3.5   Amended and Restated Certificate of Incorporation of Registrant (included as Exhibit C to the
             Prospectus)

       3.6   Amended and Restated Bylaws of Registrant(3)

       4.1   Form of certificate evidencing shares of common stock of Registrant(1)

       4.2   Form of certificate evidencing Class A Redeemable Warrants of Registrant(1)

       4.3   Form of certificate evidencing Class B Redeemable Warrants of Registrant(1)

       4.4   Form of proposed certificate evidencing shares of common stock of Registrant upon consummation of the
             merger.(3)

       4.5   Warrant Agreement dated November 12, 1996 between Registrant and GKN Securities Corp. and Gaines,
             Berland, Inc.(1)

       4.6   Redeemable Warrant Agreement dated November 12, 1996 between Registrant and American Stock Transfer &
             Trust Company(1)

       4.7   Registration Rights Agreement dated October 28, 1998 between GraphOn, Spencer Trask Investors, Walter
             Keller and the investors purchasing units in GraphOn's private placement (2)

       4.8   Amendment to Registration Rights Agreement(3)

       5.1   Opinion of Cooperman Levitt Winikoff Lester & Newman, P.C.(3)
</TABLE>


                                      II-1
<PAGE>

<TABLE>
<CAPTION>
  EXHIBIT
  NUMBER     DESCRIPTION OF EXHIBIT
- -----------  -------------------------------------------------------------------------------------------------------
<C>          <S>
       8.1   Opinion of Cooperman Levitt Winikoff Lester & Newman, P.C. with respect to certain Federal income tax
             aspects attendant to the merger(3)

       8.2   Opinion of Brobeck, Phleger & Harrison LLP with respect to certain Federal income tax aspects attendant
             to the merger(3)

      10.1   1996 Stock Option Plan of Registrant(1)

      10.2   1998 Stock Option/Stock Issuance Plan of GraphOn(2)

      10.3   Placement Agency Agreement by and between GraphOn and Spencer Trask Securities, Inc., dated as of
             September 2, 1998(2)

      10.4   Asset Purchase Agreement by and among GraphOn, Corel Corporation, Corel Corporation Limited and Corel,
             Inc. (collectively, "Corel"), dated as of December 18, 1998(2)

      10.5   Securities Purchase Agreement by and among GraphOn and Corel, dated as of December 18, 1998(2)

      10.6   Standard Industrial Lease between GraphOn and Mildred K. Dibona, dated April 14, 1995, as amended on
             October 2, 1998(3)

      10.7   Hidden Valley Office Park Lease Agreement between GraphOn and ASA Properties, Inc., dated June 5,
             1998(2)

      10.8   Lease Agreement between Corel Inc. and CML Realty Corp., dated September, 1998 and assumed by GraphOn
             on December 31, 1998(2)

      23.1   Consent of Arthur Andersen LLP(4)

      23.2   Consent of BDO Seidman, LLP(4)

      23.3   Consent of Cooperman Levitt Winikoff Lester & Newman, P.C. (included in Exhibits 5.1 and 8.1)

      23.4   Consent of Richards, Layton & Finger, P.A.(3)

      23.5   Consent of Brobeck, Phleger & Harrison LLP (included in Exhibit 8.2)

      23.6   Consent of Walter Keller(3)

      23.7   Consent of Thomas A. Bevilaqua(3)

      23.8   Consent of Eric Kim(3)

      23.9   Consent of Robert Dilworth(3)

     23.10   Consent of August P. Klein(3)

     23.11   Consent of Michael O'Reilly(3)

      24.1   Power of Attorney (included on the Signature Page of Part II of this Registration Statement) (2)

      99.1   Form of Proxy of Registrant(3)

      99.2   Form of Proxy of GraphOn(3)

      99.3   Opinion of Richards, Layton & Finger, P.A.(3)
</TABLE>


- ------------------------

(1) Incorporated by reference from Unity's Form S-1, file number 333-11165,
    filed with the SEC on August 30, 1996.

(2) Incorporated by reference from Unity's Form S-4, file number 333-76333,
    filed with the SEC on April 15, 1999.


(3) Heretofore filed with Amendment No. 1 to this Registration Statement.



(4) Filed herewith.


                                      II-2
<PAGE>
    (b) Financial Statement Schedules

        All schedules for which provision is made in the applicable accounting
        regulations of the Securities and Exchange Commission are not required
        under the related instructions or not applicable, and therefore have
        been omitted.

    (c) Item 4(b) Information--Not Applicable

ITEM 22. UNDERTAKINGS.

    (a) Registrant hereby undertakes as follows:

        (1) that prior to any public reoffering of the securities registered
    hereunder through use of a prospectus which is a part of this Registration
    Statement, by any person or party who is deemed to be an underwriter within
    the meaning of Rule 145(c), Registrant undertakes that such reoffering
    prospectus will contain the information called for by the applicable
    registration form with respect to reofferings by persons who may be deemed
    underwriters, in addition to the information called for by the other items
    of the applicable form; and

        (2) that every prospectus (i) that is filed pursuant to paragraph (1)
    immediately preceding, or (ii) that purports to meet the requirements of
    Section 10(a)(3) of the Securities Act of 1933, as amended (the "Securities
    Act"), and is used in connection with an offering of securities subject to
    Rule 415, will be filed as a part of an amendment to the Registration
    Statement and will not be used until such amendment is effective, and that,
    for purposes of determining any liability under the Securities Act, each
    such post-effective amendment shall be deemed to be a new registration
    statement relating to the securities offered therein, and the offering of
    such securities at that time shall be deemed to be the initial bona fide
    offering thereof.

    (b) The Registrant hereby undertakes to respond to requests for information
that is incorporated by reference into the joint proxy statement/prospectus
pursuant to Item 4 of this form, within one business day of receipt of such
request, and to send the incorporated documents by first class mail or other
equally prompt means. This includes information contained in documents filed
subsequent to the effective date of the Registration Statement through the date
of responding to the request.

    (c) The Registrant hereby undertakes to supply by means of a post-effective
amendment all information concerning a transaction, and GraphOn being acquired
involved therein, that was not the subject of and included in the Registration
Statement when it became effective.

    Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the questions whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

                                      II-3
<PAGE>
                                   SIGNATURES


    Pursuant to the requirements of the Securities Act of 1933, the registrant
has duly caused this Amendment to the Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York,
State of New York, on the 14th day of June, 1999.


                                UNITY FIRST ACQUISITION CORP.

                                BY:       /S/ LAWRENCE BURSTEIN, PRESIDENT
                                     -----------------------------------------
                                            Lawrence Burstein, President

    Pursuant to the requirements of the Securities Act of 1933, this Amendment
to the Registration Statement has been signed below by the following persons in
the capacities and on the dates indicated:


          SIGNATURE                        TITLE                    DATE
- ------------------------------  ---------------------------  -------------------
                                President and Director
    /s/ LAWRENCE BURSTEIN         (Principal Executive,
- ------------------------------    Financial and Accounting      June 14, 1999
      Lawrence Burstein           Officer)
              *                 Secretary and Director
- ------------------------------                                  June 14, 1999
         Norman Leben
              *                 Director
- ------------------------------                                  June 14, 1999
         John Cattier
              *                 Director
- ------------------------------                                  June 14, 1999
        Barry Ridings



- ------------------------

*   Lawrence Burstein, pursuant to Powers of Attorney (executed by each of the
    officers and directors listed above), by signing his name hereto does hereby
    sign and execute this Amendment to the Registration Statement on behalf of
    each of the persons referenced above.

                                                  /s/ LAWRENCE BURSTEIN

                                          --------------------------------------
                                                    Lawrence Burstein

                                      II-4

<PAGE>

                                                                    EXHIBIT 23.1

                             CONSENT OF INDEPENDENT
                               PUBLIC ACCOUNTANTS

         As independent public accountants, we hereby consent to the use of our
reports and to all references to our firm included in or made a part of this
Registration Statement.

                                                     /s/ Arthur Andersen LLP
                                                     --------------------------
                                                     ARTHUR ANDERSEN LLP
New York, New York
June 14, 1999



<PAGE>

                                                                   EXHIBIT 23.2

               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

The Board of Directors
GraphOn Corporation

We hereby consent to the use of our report, in the Registration Statement on
Form S-4, dated February 25, 1999, except with respect to matters discussed
in Note 6 as to which the date is May 30, 1999, relating to the balance
sheets of GraphOn Corporation as of December 31, 1998 and 1997, and the
related statements of operations and comprehensive income, stockholders'
equity and cash flows for each of the three years in the period ended
December 31, 1998.

We also consent to the reference to our firm under the heading "Experts" in
the Registration Statement on Form S-4.


/s/ BDO SEIDMAN, LLP
- -----------------------
BDO Seidman, LLP
San Jose, California
June 14, 1999


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