WHITE PINE SOFTWARE INC
SB-2/A, 1996-10-09
PREPACKAGED SOFTWARE
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<PAGE>
 
    
 AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON OCTOBER 9, 1996     
 
                                                      REGISTRATION NO. 333-9525
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
 
                               ----------------
                                
                             AMENDMENT NO. 3     
                                      TO
                                   FORM SB-2
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
 
                               ----------------
 
                           WHITE PINE SOFTWARE, INC.
                (NAME OF SMALL BUSINESS ISSUER IN ITS CHARTER)
 
         DELAWARE                    7372                    04-3151064
     (STATE OR OTHER          (PRIMARY STANDARD                I.R.S.
     JURISDICTION OF              INDUSTRIAL                  EMPLOYER
     INCORPORATION OR         CLASSIFICATION CODE          IDENTIFICATION
     ORGANIZATION)                 NUMBER)                     NUMBER)
           
 
                              542 AMHERST STREET
                          NASHUA, NEW HAMPSHIRE 03063
                                (603) 886-9050
  (ADDRESS AND TELEPHONE NUMBER OF PRINCIPAL EXECUTIVE OFFICES AND PRINCIPAL
                              PLACE OF BUSINESS)
 
                               ----------------
 
                                HOWARD R. BERKE
                           WHITE PINE SOFTWARE, INC.
                              542 AMHERST STREET
                          NASHUA, NEW HAMPSHIRE 03063
                                (603) 886-9050
           (NAME, ADDRESS AND TELEPHONE NUMBER OF AGENT FOR SERVICE)
 
                               ----------------
 
                                  COPIES TO:
 
   PETER M. ROSENBLUM, ESQ. MARK L.       LOUIS A. GOODMAN, ESQ. PATRICK J.
 JOHNSON, ESQ. FOLEY, HOAG & ELIOT LLP    FOYE, ESQ. SKADDEN, ARPS, SLATE,
    ONE POST OFFICE SQUARE BOSTON,        MEAGHER & FLOM ONE BEACON STREET
          MASSACHUSETTS 02109                BOSTON, MASSACHUSETTS 02108
 
  APPROXIMATE DATE OF PROPOSED SALE TO THE PUBLIC: As soon as practicable
after this Registration Statement becomes effective.
 
  If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [_]  333-
 
  If this Form is a post-effective amendment filed pursuant to Rule 462(c)
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. [_]  333-
 
  If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [X]
 
                               ----------------
 
  THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS
REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH
SECTION 8(A) OF THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(A), MAY DETERMINE.
 
 
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>
 
   
  Part I of this Registration Statement has been intentionally omitted because
this Amendment No. 3 does not effect any changes to the Prospectus. The sole
purpose of this Amendment No. 3 is to file revised drafts of Exhibits 1.1 and
10.23.     
<PAGE>
 
                                    PART II
 
                    INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 24. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
  Section 145 of the Delaware General Corporation Law affords a Delaware
corporation the power to indemnify its present and former directors and
officers under certain conditions. Article SEVENTH of the Restated Charter
provides that the Company shall indemnify each person who at any time is, or
shall have been, a director or officer of the Company, and is threatened to be
or is made a party to any threatened, pending or completed action, suit or
proceeding, whether civil, criminal, administrative or investigative, by
reason of the fact that he is, or was, a director or officer of the Company,
or is or was serving at the request of the Company as a director, officer,
employee, trustee, or agent of another corporation, partnership, joint
venture, trust or other enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement incurred in connection
with any such action, suit or proceeding to the maximum extent permitted by
the Delaware General Corporation Law.
 
  Section 102(b)(7) of the Delaware General Corporation Law gives a Delaware
corporation the power to adopt a charter provision eliminating or limiting the
personal liability of directors to the corporation or its stockholders for
breach of fiduciary duty as directors, provided that such provision may not
eliminate or limit the liability of directors for (i) any breach of the
director's duty of loyalty to the corporation or its stockholders, (ii) any
acts or omissions not in good faith or which involve intentional misconduct or
a knowing violation of law, (iii) any payment of a dividend or approval of a
stock purchase that is illegal under Section 174 of the Delaware Corporation
Law or (iv) any transaction from which the director derived an improper
personal benefit. Article NINTH of the Restated Charter provides that to the
maximum extent permitted by the General Corporation Law of the State of
Delaware, no director of the Company shall be personally liable to the Company
or to any of its stockholders for monetary damages arising out of such
director's breach of fiduciary duty as a director of the Company. No amendment
to or repeal of the provisions of Article NINTH shall apply to or have any
effect of the liability or the alleged liability of any director of the
Corporation with respect to any act or failure to act of such director
occurring prior to such amendment or repeal. A principal effect of such
Article NINTH is to limit or eliminate the potential liability of the
Company's directors for monetary damages arising from breaches of their duty
of care, unless the breach involves one of the four exceptions described in
(i) through (iv) above.
 
  Section 145 of the Delaware General Corporation Law also affords a Delaware
corporation the power to obtain insurance on behalf of its directors and
officers against liabilities incurred by them in those capacities. The Company
intends to procure a directors' and officers' liability and company
reimbursement liability insurance policy that will (a) insure directors and
officers of the Company against losses (above a deductible amount) arising
from certain claims made against them by reason of certain acts done or
attempted by such directors or officers and (b) insure the Company against
losses (above a deductible amount) arising from any such claims, but only if
the Company is required or permitted to indemnify such directors or officers
for such losses under statutory or common law or under provisions of the
Restated Charter or the Restated By-Laws.
 
  Reference is also made to Section 6 of the Underwriting Agreement between
the Company and the Underwriters, filed as Exhibit 1.1 to this Registration
Statement, for a description of indemnification arrangements between the
Company and the Underwriters.
 
                                     II-1
<PAGE>
 
ITEM 25. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
  The following table sets forth the various expenses to be paid by the
Company in connection with the issuance and distribution of the securities
being registered, other than the underwriting discount. All amounts shown are
estimates except for amounts of filing and listing fees.
 
<TABLE>
   <S>                                                                 <C>
   Filing fee of Securities and Exchange Commission................... $ 11,897
   Filing fee of National Association of Securities Dealers, Inc......    3,950
   Listing fee of Nasdaq Stock Market, Inc............................   40,070
   Premium for directors' and officers' insurance.....................  125,000
   Accounting fees and expenses.......................................  275,000
   Blue sky fees and expenses (including related legal fees)..........   20,000
   Legal fees and expenses............................................  350,000
   Printing and engraving expenses....................................  100,000
   Transfer agent fees................................................    5,000
   Miscellaneous......................................................   19,083
                                                                       --------
       Total.......................................................... $950,000
                                                                       ========
</TABLE>
 
ITEM 26. RECENT SALES OF UNREGISTERED SECURITIES.
 
  The following information is furnished with regard to all securities sold by
the Company within the past three years which were not registered under the
Securities Act.
 
  (a) On the dates set forth below the Company issued and sold the number of
shares of its Common Stock indicated upon exercise of stock options held by
certain of its employees.
 
<TABLE>
<CAPTION>
                                       NUMBER OF                             EXERCISE PRICE
       DATE OF SALE                  SHARES ISSUED                             PER SHARE
       ------------                  -------------                           --------------
     <S>                             <C>                                     <C>
      October 28, 1994                     167                                   $1.00
     December 27, 1994                     250                                   $1.00
          May 26, 1995                     694                                   $1.00
         June 30, 1995                   1,944                                   $0.50
         July 12, 1995                      56                                   $1.50
         July 12, 1995                     167                                   $1.00
         July 13, 1995                  10,000                                   $0.50
        April 25, 1996                   1,300                                   $1.00
        April 25, 1996                     330                                   $1.50
         June 14, 1996                     333                                   $1.50
         June 14, 1996                      83                                   $2.00
         July 12, 1996                  20,000                                   $1.00
         July 16, 1996                   1,549                                   $2.00
</TABLE>
 
  (b) On August 31, 1993, the Company issued 403,847 shares of Common Stock to
5 stockholders of White Pine Software, Inc., a New Hampshire corporation, in
exchange for all of the outstanding capital stock of such corporation.
 
  (c) On April 1, 1994, the Company issued 595,840 shares of Common Stock to
the stockholder of Grafpoint in connection with the merger of Grafpoint into
the Company.
 
  (d) On December 15, 1995, the Company issued 1,781,906 shares of Common
Stock to 10 stockholders of About Software Corporation S.A. as partial
consideration for the outstanding stock of About Software Corporation S.A.
 
                                     II-2
<PAGE>
 
  (e) On March 19, 1996, the Company issued 343,053 shares of $5.83 Stock to
affiliates of Advent International Corporation for an aggregate purchase price
of $2,000,000.
 
  (f) On April 17, 1996, the Company issued 51,458 shares of $5.83 Stock to a
stockholder of the Company for an aggregate purchase price of $300,000.
 
  (g) On July 31, 1996, pursuant to an exclusive software license agreement
with Cornell Research Foundation, Inc., the Company issued to the Cornell
Research Foundation, Inc. a warrant to purchase 20,000 shares of Common Stock
at a price of $3.00 per share.
 
  The issuances described in Item 26(a) were made in reliance upon the
exemptions from registration set forth in Rule 701 under the Securities Act
and Section 4(2) of the Securities Act relating to sales by an issuer not
involving any public offering. The issuances described in Items 15(b), (c),
(d), (e), (f) and (g) were made in reliance upon the exemption from
registration set forth in Section 4(2) of the Securities Act relating to sales
by an issuer not involving any public offering. None of the foregoing
transactions involved a distribution or public offering. No underwriters were
engaged in connection with the foregoing issuances of securities, and no
underwriting commissions or discounts were paid.
 
ITEM 27. EXHIBITS.
 
<TABLE>   
<CAPTION>
 EXHIBIT NO. DESCRIPTION
 ----------- -----------
 <C>         <S>
    1.1      Form of Underwriting Agreement
    3.1*     Amended and Restated Certificate of Incorporation of the Company
    3.2*     Proposed form of Amended and Restated Certificate of Incorporation
             of the Company to become effective immediately following the
             offering
    3.3*     By-Laws of the Company, as amended
    3.4*     Proposed form of Amended and Restated By-Laws of the Company to
             become effective upon the closing of the offering
    4.1*     Specimen certificate for common stock, $.01 par value, of the
             Company
    5.1*     Opinion of Foley, Hoag & Eliot llp
   10.1*     Visual International, Inc. Stock Option Plan (1992), as amended
   10.2*     White Pine Software, Inc. Stock Option Plan (1993), as amended
   10.3*     White Pine Software, Inc. Stock Option Plan (1994)
   10.4*     White Pine Software, Inc. Stock Option Plan (1995), as amended
   10.5*     White Pine Software, Inc. Stock Option Plan (1996)
   10.6*     White Pine Software, Inc. 1996 Incentive and Nonqualified Stock
             Option Plan
   10.7*     White Pine Software, Inc. 1996 Employee Stock Purchase Plan
   10.8*     Employment Agreement dated January 3, 1994 with Howard R. Berke,
             as amended
   10.9*     Employment Agreement dated October 10, 1995 with Killko A.
             Caballero
   10.10*    Nondisclosure and Noncompetition Agreement dated February 15, 1996
             with David O. Bundy
   10.11+    Exclusive Software License Agreement dated June 1, 1996 between
             Cornell Research Foundation, Inc. and the Company
   10.12*    Common Stock Purchase Warrant of the Company dated July 31, 1996,
             issued to Cornell Research Foundation, Inc.
   10.13*    Commercial Loan Agreement dated December 30, 1994 between Fleet
             Bank--NH and the Company, as amended
   10.14*    $1,000,000 Revolving Line of Credit Promissory Note of the Company
             dated December 30, 1994, issued to Fleet Bank--NH, as amended
   10.15*    Security Agreement dated December 30, 1994 between Fleet Bank--NH
             and the Company
   10.16*    Collateral Assignment and Security Agreement dated December 30,
             1994 between Fleet Bank--NH and the Company, as amended
</TABLE>    
 
                                     II-3
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT NO. DESCRIPTION
 ----------- -----------
 <C>         <S>
   10.17*    $53,000 Commercial Promissory Note of the Company dated August 25,
             1995, issued to Fleet Bank--NH
   10.18*    Loan Contract from Credit Agricole, Alpes-Maritimes Regional
             Division to About Software Corporation S.A. in the principal
             amount of FF 800,000
   10.19*    Loan Contract from Credit Agricole, Alpes-Maritimes Regional
             Division to About Software Corporation S.A. in the principal
             amount of FF 1,800,000
   10.20*    Loan Contract from Credit Agricole, Alpes-Maritimes Regional
             Division to About Software Corporation S.A. in the principal
             amount of FF 180,000
   10.21*    Stock Purchase Agreement dated March 19, 1996 among certain
             investors and the Company, as amended
   10.22*    Stock Purchase Agreement dated April 17, 1996 between J.F. Shea,
             Co., Inc. and the Company, as amended
   10.23     Amended and Restated Registration Rights Agreement dated March 19,
             1996 among certain stockholders of the Company and the Company, as
             amended
   10.24*    Acquisition Agreement dated October 10, 1995 among former
             stockholders of About Software Corporation S.A. and the Company
   10.25*    Indenture of Lease dated May 15, 1996 by Nash-Tamposi Limited
             Partnership, Five N Associates, Ballinger Properties, L.L.C.
             and the Company
   11.1*     Statement re computation of per share earnings
   21.1*     List of subsidiaries of the Company
   23.1*     Consent of Ernst & Young LLP
   23.2*     Consent of Ernst & Young Audit
   23.3*     Consent of Foley, Hoag & Eliot llp (included in Exhibit 5.1)
   24.1*     Power of Attorney (contained on page II-6 of this Registration
             Statement as filed on August 2, 1996)
   27.1*     Financial Data Schedules for fiscal year ended December 31, 1995
             and six months ended June 30, 1996
</TABLE>    
- --------
+ Previously filed under application for confidential treatment.
* Previously filed.
 
ITEM 28. UNDERTAKINGS.
 
  The small business issuer will provide to the underwriters at the closing
specified in the underwriting agreement certificates in such denominations and
registered in such names as required by the underwriters to permit prompt
delivery to each purchaser.
 
  Insofar as indemnification for liabilities arising under the Securities Act
of 1933 (the "Securities Act") may be permitted to directors, officers and
controlling persons of the small business issuer pursuant to the foregoing
provisions, or otherwise, the small business issuer 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 small business issuer of expenses
incurred or paid by a director, officer or controlling person of the small
business issuer 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 small business issuer will, unless in the
opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question 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-4
<PAGE>
 
  If the small business issuer relies on Rule 430A under the Securities Act,
the small business issuer will:
 
    (1) for determining any liability under the Securities Act, treat the
  information omitted from the form of prospectus filed as part of this
  registration statement in reliance upon Rule 430A and contained in a form
  of prospectus filed by the small business issuer under Rule 424(b)(1), or
  (4), or 497(h) under the Securities Act as part of this registration
  statement as of the time the Commission declared it effective; and
 
    (2) for determining any liability under the Securities Act, treat each
  post-effective amendment that contains a form of prospectus as a new
  registration statement for the securities offered in the registration
  statement, and that offering of the securities at that time as the initial
  bona fide offering of those securities.
 
                                     II-5
<PAGE>
 
                                  SIGNATURES
   
  IN ACCORDANCE WITH THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THE
REGISTRANT CERTIFIES THAT IT HAS REASONABLE GROUNDS TO BELIEVE THAT IT MEETS
ALL OF THE REQUIREMENTS FOR FILING ON FORM SB-2 AND AUTHORIZED THIS AMENDMENT
NO. 3 TO REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED,
IN THE CITY OF NASHUA, NEW HAMPSHIRE ON OCTOBER 9, 1996.     
 
                                          White Pine Software, Inc.
 
                                                  /s/ Richard M. Darer
                                          By: _________________________________
                                                    RICHARD M. DARER
                                            CHIEF FINANCIAL OFFICER AND VICE
                                               PRESIDENT OF ADMINISTRATION
   
  IN ACCORDANCE WITH THE REQUIREMENTS OF THE SECURITIES ACT OF 1933, THIS
AMENDMENT NO. 3 TO REGISTRATION STATEMENT HAS BEEN SIGNED BY THE FOLLOWING
PERSONS IN THE CAPACITIES INDICATED ON OCTOBER 9, 1996.     
 
              SIGNATURE                                 TITLE
              ---------                                 -----
 
                  *                    President, Chief Executive Officer and
- -------------------------------------   Director (Principal Executive
           HOWARD R. BERKE              Officer)
 
        /s/ Richard M. Darer           Chief Financial Officer and Vice
- -------------------------------------   President of Administration
          RICHARD M. DARER              (Principal Financial and Accounting
                                        Officer)
 
                  *                    Director
- -------------------------------------
         KILLKO A. CABALLERO
 
                  *                    Director
- -------------------------------------
           ARTHUR H. BRUNO
 
                  *                    Director
- -------------------------------------
         JONATHAN G. MORGAN
 
                  *                    Director
- -------------------------------------
        PIERRE-GABRIEL VALLEE
 
*By:   /s/ Richard M. Darer
  _________________________________
          RICHARD M. DARER
          ATTORNEY-IN-FACT
 
                                     II-6
<PAGE>
 
                                 EXHIBIT INDEX
 
<TABLE>   
<CAPTION>
 EXHIBIT NO. DESCRIPTION                                                   PAGE
 ----------- -----------                                                   ----
 <C>         <S>                                                           <C>
    1.1      Form of Underwriting Agreement
    3.1*     Amended and Restated Certificate of Incorporation of the
             Company
    3.2*     Proposed form of Amended and Restated Certificate of
             Incorporation of the Company to become effective
             immediately following the offering
    3.3*     By-Laws of the Company, as amended
    3.4*     Proposed form of Amended and Restated By-Laws of the
             Company to become effective upon the closing of the
             offering
    4.1*     Specimen certificate for common stock, $.01 par value, of
             the Company
    5.1*     Opinion of Foley, Hoag & Eliot LLP
   10.1*     Visual International, Inc. Stock Option Plan (1992), as
             amended
   10.2*     White Pine Software, Inc. Stock Option Plan (1993), as
             amended
   10.3*     White Pine Software, Inc. Stock Option Plan (1994)
   10.4*     White Pine Software, Inc. Stock Option Plan (1995), as
             amended
   10.5*     White Pine Software, Inc. Stock Option Plan (1996)
   10.6*     White Pine Software, Inc. 1996 Incentive and Nonqualified
             Stock Option Plan
   10.7*     White Pine Software, Inc. 1996 Employee Stock Purchase Plan
   10.8*     Employment Agreement dated January 3, 1994 with Howard R.
             Berke, as amended
   10.9*     Employment Agreement dated October 10, 1995 with Killko A.
             Caballero
   10.10*    Nondisclosure and Noncompetition Agreement dated February
             15, 1996 with David O. Bundy
   10.11+    Exclusive Software License Agreement dated June 1, 1996
             between Cornell Research Foundation, Inc. and the Company
   10.12*    Common Stock Purchase Warrant of the Company dated July 31,
             1996, issued to Cornell Research Foundation, Inc.
   10.13*    Commercial Loan Agreement dated December 30, 1994 between
             Fleet Bank--NH and the Company, as amended
   10.14*    $1,000,000 Revolving Line of Credit Promissory Note of the
             Company dated December 30, 1994, issued to Fleet Bank--NH,
             as amended
   10.15*    Security Agreement dated December 30, 1994 between Fleet
             Bank--NH and the Company
   10.16*    Collateral Assignment and Security Agreement dated December
             30, 1994 between Fleet Bank--NH and the Company, as amended
   10.17*    $53,000 Commercial Promissory Note of the Company dated
             August 25, 1995, issued to Fleet Bank--NH
   10.18*    Loan Contract from Credit Agricole, Alpes-Maritimes
             Regional Division to About Software Corporation S.A. in the
             principal amount of FF 800,000
   10.19*    Loan Contract from Credit Agricole, Alpes-Maritimes
             Regional Division to About Software Corporation S.A. in the
             principal amount of FF 1,800,000
   10.20*    Loan Contract from Credit Agricole, Alpes-Maritimes
             Regional Division to About Software Corporation S.A. in the
             principal amount of FF 180,000
   10.21*    Stock Purchase Agreement dated March 19, 1996 among certain
             investors and the Company, as amended
   10.22*    Stock Purchase Agreement dated April 17, 1996 between J.F.
             Shea, Co., Inc. and the Company, as amended
   10.23     Amended and Restated Registration Rights Agreement dated
             March 19, 1996 among certain stockholders of the Company
             and the Company, as amended
   10.24*    Acquisition Agreement dated October 10, 1995 among former
             stockholders of About Software Corporation S.A. and the
             Company
   10.25*    Indenture of Lease dated May 15, 1996 by Nash-Tamposi
             Limited Partnership, Five N Associates, Ballinger
             Properties, L.L.C. and the Company
</TABLE>    
<PAGE>
 
<TABLE>   
<CAPTION>
 EXHIBIT NO. DESCRIPTION                                                   PAGE
 ----------- -----------                                                   ----
 <C>         <S>                                                           <C>
    11.1*    Statement re computation of per share earnings
    21.1*    List of subsidiaries of the Company
    23.1*    Consent of Ernst & Young LLP
    23.2*    Consent of Ernst & Young Audit
    23.3*    Consent of Foley, Hoag & Eliot llp (included in Exhibit
             5.1)
    24.1*    Power of Attorney (contained on page II-6 of the
             Registration Statement
             as filed on August 2, 1996)
    27.1*    Financial Data Schedules for fiscal year ended December 31,
             1995 and six months ended June 30, 1996
</TABLE>    
- --------
+ Previously filed under application for confidential treatment.
* Previously filed.

<PAGE>
                               3,000,000 Shares
 
                           White Pine Software, Inc.

                                 Common Stock

                            UNDERWRITING AGREEMENT
                            ----------------------


[          ], 1996

COWEN & COMPANY
OPPENHEIMER & CO., INC.
VOLPE, WELTY & COMPANY
As Representatives of the several Underwriters
c/o Cowen & Company
    Financial Square
    New York, New York  10005

Dear Sirs:

         1.    Introductory.  White Pine Software, Inc., a Delaware corporation
               ------------                                                    
(the "Company"), proposes to sell, pursuant to the terms of this Agreement, to
the several underwriters named in Schedule A hereto (the "Underwriters" or,
each, an "Underwriter"), an aggregate of 3,000,000 shares of Common Stock, $.01
par value (the "Common Stock") of the Company.  The aggregate of 3,000,000
shares so proposed to be sold is hereinafter referred to as the "Firm Stock."
The Company also proposes to sell to the Underwriters, upon the terms and
conditions set forth in Section 3 hereof, up to an additional 450,000 shares of
Common Stock (the "Optional Stock"). The Firm Stock and the Optional Stock are
hereinafter collectively referred to as the "Stock."  The respective amounts of
the Firm Stock and the Optional Stock to be so purchased by the several
Underwriters are set forth opposite their names in Schedule A hereto.  Cowen &
Company ("Cowen"), Oppenheimer & Co., Inc. ("Oppenheimer") and Volpe, Welty &
Company ("Volpe") are acting as representatives of the several Underwriters and,
in such capacity, are hereinafter referred to as the "Representatives."

         2.    Representations and Warranties of the Company.  The Company
               ---------------------------------------------              
represents and warrants to, and agrees with, the several Underwriters as
follows:

         (a)   A registration statement on Form SB-2 (File No. 333-9525) in the
     form in which it became or becomes effective, and also in such form as it
     may be when any post-effective amendment thereto shall become effective
     with respect to the Stock, including any pre-effective prospectuses
     included as part of the registration statement as originally filed or as
     part of any amendment or supplement thereto, or filed
<PAGE>
 
     pursuant to Rule 424 under the Securities Act of 1933, as amended (the
     "Securities Act"), and the rules and regulations (the "Rules and
     Regulations") of the Securities and Exchange Commission (the "Commission")
     thereunder, copies of which have heretofore been delivered to you, has been
     carefully prepared by the Company in conformity with the requirements of
     the Securities Act and has been filed with the Commission under the
     Securities Act; one or more amendments to such registration statement,
     including in each case an amended pre-effective prospectus, copies of which
     amendments have heretofore been delivered to you, also have been so
     prepared and filed.  The term "Registration Statement," as used in this
     Agreement, means the registration statement referenced in the first
     sentence of this Section 2(a), subject to the following two sentences if it
     is contemplated, at the time this Agreement is executed, that a post-
     effective amendment to the registration statement will be filed and must be
     declared effective before the offering of the Stock may commence, the term
     "Registration Statement" as used in this Agreement means the registration
     statement as amended by said post-effective amendment.  The term
     "Registration Statement," as used in this Agreement, shall also include any
     registration statement relating to the Stock that is filed and declared
     effective pursuant to Rule 462(b) under the Securities Act.  The term
     "Prospectus," as used in this Agreement, means the prospectus in the form
     included in the Registration Statement subject to the following two
     sentences.  If the prospectus included in the Registration Statement omits
     information in reliance on Rule 430A under the Securities Act and such
     information is included in a prospectus filed with the Commission pursuant
     to Rule 424(b) under the Securities Act, the term "Prospectus," as used in
     this Agreement, means the prospectus in the form included in the
     Registration Statement as supplemented by the addition of the Rule 430A
     information and other information contained in the prospectus filed with
     the Commission pursuant to Rule 424(b).  If prospectuses that meet the
     requirements of Section 10(a) of the Securities Act are delivered pursuant
     to Rule 434 under the Securities Act, then (i) the term "Prospectus" as
     used in this Agreement means the "prospectus subject to completion" (as
     such term is defined in Rule 434(g) under the Securities Act) as
     supplemented by (a) the addition of Rule 430A information or other
     information contained in the form of prospectus delivered pursuant to Rule
     434(b)(2) under the Securities Act or (b) the information contained in the
     term sheets described in Rule 434(b)(3) under the Securities Act, and (ii)
     the date of such prospectuses shall be deemed to be the date of the term
     sheets.  The term "Pre-effective Prospectus" as used in this Agreement
     means the prospectus subject to completion in the form included in the
     registration statement referenced in the first sentence of this Section
     2(a) at the time of the initial filing thereof and as such prospectus shall
     have been amended from time to time prior to the date of the Prospectus.

         (b)   The Commission has not issued or threatened to issue any order
     preventing or suspending the use of any Pre-effective Prospectus, and, at
     its date of issue, each Pre-effective Prospectus conformed in all material
     respects with the requirements of the Securities Act and did not include
     any untrue statement of a material fact or omit to state a material fact
     required to be stated therein or necessary

                                       2
<PAGE>
 
     to make the statements therein, in light of the circumstances under which
     they were made, not misleading, other than any such nonconforming untrue
     statement or omission in a Pre-effective Prospectus which has been
     corrected in the Prospectus; and, when the Registration Statement became or
     becomes effective and at all times subsequent thereto up to and including
     the Closing Dates (as hereinafter defined), the Registration Statement and
     the Prospectus and any amendments or supplements thereto contained and will
     contain all material statements and information required to be included
     therein by the Securities Act and conformed and will conform in all
     material respects to the requirements of the Securities Act and neither the
     Registration Statement nor the Prospectus, nor any amendment or supplement
     thereto, included or will include any untrue statement of a material fact
     or omitted or will omit to state any material fact required to be stated
     therein or necessary to make the statements therein, in light of the
     circumstances under which they were made, not misleading; provided,
                                                               -------- 
     however, that the foregoing representations, warranties and agreements
     -------                                                               
     shall not apply to information contained in or omitted from any Pre-
     effective Prospectus or the Registration Statement or the Prospectus or any
     such amendment or supplement thereto in reliance upon, and in conformity
     with, written information furnished to the Company by or on behalf of any
     Underwriter, directly or through you, specifically for use in the
     preparation thereof.  There is no franchise, lease, contract, agreement or
     document required to be described in the Registration Statement or
     Prospectus or to be filed as an exhibit to the Registration Statement which
     is not described therein or filed as required, and all descriptions of any
     such franchises, leases, contracts, agreements or documents contained in
     the Registration Statement are accurate and complete descriptions of such
     documents in all material respects.

         (c)   Subsequent to the respective dates as of which information is
     given in the Registration Statement and Prospectus, except as set forth or
     contemplated in the Prospectus (including without limitation with respect
     to the stock plans, warrant, and conversion of $5.83 Stock (as hereinafter
     defined)), neither the Company nor its subsidiaries has incurred any
     liabilities or obligations, direct or contingent, or entered into any
     transactions not in the ordinary course of business, and there has not been
     any material adverse change in the condition (financial or other),
     properties, business, management, prospects, net worth or results of
     operations of the Company and its subsidiaries considered as a whole, or
     any change in the capital stock or long-term debt, or any material change
     in the short-term debt, of the Company and its subsidiaries considered as a
     whole.

         (d)   The financial statements, together with the related notes and
     schedules, set forth in the Prospectus and elsewhere in the Registration
     Statement fairly present, on the basis stated in the Registration
     Statement, the financial position and the results of operations and changes
     in financial position of the Company and its subsidiaries at the respective
     dates and for the respective periods therein specified.  Such statements
     and related notes and schedules have been prepared in accordance with
     generally accepted accounting principles applied on a consistent basis.
     The selected financial

                                       3
<PAGE>
 
     and statistical data set forth in the Prospectus under the caption
     "Selected Financial Data" fairly present, on the basis stated in the
     Registration Statement, the information set forth therein.

         (e)   Ernst & Young, LLP, who have expressed their opinion on the
     audited financial statements and related schedules included in the
     Registration Statement and the Prospectus, are independent public
     accountants as required by the Securities Act and the Rules and
     Regulations.

         (f)   The Company and each of its subsidiaries has been duly organized
     and is validly existing and in good standing as corporations under the laws
     of their respective jurisdictions of organization, with power and authority
     (corporate and other) to own or lease their businesses as described in the
     Prospectus; the Company and each of its subsidiaries is in possession of
     and operating in compliance with all franchises, grants, authorizations,
     licenses, permits, easements, consents, certificates and orders required
     for the conduct of their respective businesses, all of which are valid and
     in full force and effect; and the Company and each of its subsidiaries is
     duly qualified to do business and in good standing as foreign corporations
     in all other jurisdictions where the failure to so qualify would have a
     material adverse effect on the Company.  The Company and each of its
     subsidiaries has all requisite power and authority, and all necessary
     consents, approvals, authorizations, orders, registrations, qualifications,
     licenses and permits of and from all public regulatory or governmental
     agencies and bodies to own, lease and operate their respective properties
     and conduct their respective businesses as now being conducted and as
     described in the Registration Statement and the Prospectus, and no such
     consent, approval, authorization, order, registration, qualification,
     license or permit contains a materially burdensome restriction not
     adequately disclosed in the Registration Statement and the Prospectus.  The
     Company owns or controls, directly or indirectly, only the following
     corporations:  About Software Corporation S.A. and About Software
     Corporation.

         (g)   The Company's authorized and outstanding capital stock is on the
     date hereof, and will be on the Closing Dates (as hereinafter defined), as
     set forth under the caption "Description of Capital Stock" in the
     Prospectus; the outstanding shares of capital stock of the Company conform
     to the description thereof in the Prospectus, have been duly authorized and
     validly issued and are fully paid and nonassessable, have been issued in
     compliance with all federal and state securities laws and were not issued
     in violation of, and on the Closing Date will not be subject to, any
     preemptive rights or similar rights to subscribe for or purchase
     securities.  The 394,511 shares of Common Stock to be issued upon the
     conversion of all outstanding shares of common stock, par value $5.83 per
     share (the "$5.83 Stock"), of the Company, to be effected immediately prior
     to the First Closing (as hereinafter defined), have been duly and validly
     authorized and, when issued, will be duly and validly issued, fully paid
     and nonassessable and free of any preemptive or similar rights.  Except as
     disclosed in and or contemplated by the Prospectus (including without
     limitation with respect to

                                       4
<PAGE>
 
     stock purchase and stock option plans) and the financial statements of the
     Company and related notes thereto included in the Prospectus, the Company
     does not have outstanding any options or warrants to purchase, or any
     preemptive rights or other rights to subscribe for or to purchase any
     securities or obligations convertible into, or any contracts or commitments
     to issue or sell, shares of its capital stock or any such options, rights,
     convertible securities or obligations.  The description of the Company's
     stock option and other stock plans or arrangements, and the options or
     other rights granted or exercised thereunder, as set forth in the
     Prospectus, accurately and fairly presents the information required to be
     shown with respect to such plans, arrangements, options and rights.  All
     outstanding shares of capital stock of the Company's subsidiaries have been
     duly authorized and validly issued, and are fully paid and nonassessable
     and (other than nominal share ownership as required by applicable law) are
     owned directly by the Company free and clear of any liens, encumbrances,
     equities or claims.

         (h)   The Stock to be issued and sold by the Company to the
     Underwriters hereunder has been duly and validly authorized and, when
     issued and delivered against payment therefor as provided herein, will be
     duly and validly issued, fully paid and nonassessable and free of any
     preemptive or similar rights and will conform to the description thereof in
     the Prospectus.

         (i)   Except as set forth in the Prospectus, there are no legal or
     governmental proceedings pending to which the Company or any of its
     subsidiaries or any affiliates is a party or of which any property of the
     Company or any of its subsidiaries or any affiliate is subject, which, if
     determined adversely to the Company or any of its subsidiaries or any such
     affiliate, might individually or in the aggregate (i) prevent or adversely
     affect the transactions contemplated by this Agreement, (ii) suspend the
     effectiveness of the Registration Statement, (iii) prevent or suspend the
     use of the Pre-effective Prospectus in any jurisdiction or (iv) result in a
     material adverse change in the condition (financial or other), properties,
     business, management, prospects, net worth or results of operations of the
     Company and its subsidiaries considered as a whole, and, to the best of the
     Company's knowledge, there is no valid basis for any such legal or
     governmental proceeding; and to the best of the Company's knowledge, no
     such proceedings are threatened or contemplated against the Company or any
     of its subsidiaries or any affiliate by governmental authorities or others.
     The Company is neither a party nor subject to the provisions of any
     material injunction, judgment, decree or order of any court, regulatory
     body or other governmental agency or body.  The description of the
     Company's litigation under the caption "Legal Proceedings" in the
     Prospectus is true and correct and complies with the Rules and Regulations.

         (j)   The execution, delivery and performance of this Agreement and the
     consummation of the transactions herein contemplated (i) will not result in
     any violation of the provisions of the Amended and Restated Certificate of
     Incorporation, and Amended and Restated By-Laws or other organizational
     documents of the Compa-

                                       5
<PAGE>
 
     ny or any of its subsidiaries or any law, order, rule or regulation of any
     court or governmental agency or body having jurisdiction over the Company
     or any of its subsidiaries or any of their properties or assets, (ii) will
     not conflict with or result in a breach or violation of any of the terms or
     provisions of, or constitute a default under, any indenture, mortgage, deed
     of trust, loan agreement or other material agreement or instrument to
     which the Company or any of its subsidiaries is a party or to which the
     Company, any of its subsidiaries or any of the property or assets of the
     Company or any of its subsidiaries is subject and (iii) will not result in
     the creation or imposition of a lien upon any property or assets of the
     Company or any of its subsidiaries.

         (k)   No consent, approval, authorization or order of any court or
     governmental agency or body is required for the execution, delivery and
     performance of this Agreement by the Company and the consummation of the
     transactions contemplated by this Agreement, except such consents,
     approvals, or authorizations which have been obtained, such as may be
     required by the National Association of Securities Dealers, Inc. (the
     "NASD") or under the Securities Act or the Securities Exchange Act of 1934,
     as amended (the "Exchange Act"), or securities or "Blue Sky" laws of any
     jurisdiction in connection with the purchase and distribution of the Stock
     by the Underwriters.

         (l)   The Company has the full corporate power and authority to enter
     into this Agreement and to perform its obligations hereunder (including to
     issue, sell and deliver the Stock), and this Agreement has been duly and
     validly authorized, executed and delivered by the Company and is a valid
     and binding obligation of the Company, enforceable against the Company in
     accordance with its terms, except to the extent that rights to indemnity
     and contribution hereunder may be limited by federal or state securities
     laws or the public policy underlying such laws.

         (m)   The Company and its subsidiaries are in all material respects in
     compliance with, and conduct their businesses in conformity with, all
     applicable federal, state, local and foreign laws, rules and regulations
     (including but not limited to the Foreign Corrupt Practices Act) and all
     applicable judgments, decrees or orders of any court or governmental agency
     or body; to the best of the Company's knowledge, otherwise than as set
     forth in the Registration Statement and the Prospectus, no prospective
     change in any of such laws, rules or regulations has been adopted which,
     when made effective, would have a material adverse effect on the operations
     of the Company and its subsidiaries.

         (n)   The Company and its subsidiaries have filed all necessary
     federal, state, local and foreign income, payroll, franchise and other tax
     returns and have paid all taxes shown as due thereon or with respect to any
     of their properties, and there is no tax deficiency that has been, or to
     the best of the Company's knowledge is likely to be, asserted against the
     Company or any of its subsidiaries or any of their respective

                                       6
<PAGE>
 
     properties or assets that would adversely affect the financial position,
     business or operations of the Company and its subsidiaries.

         (o)   No person or entity has the right to require registration of
     shares of Common Stock or other securities of the Company because of the
     filing or effectiveness of the Registration Statement or otherwise, except
     for persons and entities who have expressly waived such right or who have
     been given proper notice and have failed to exercise such right within the
     time or times required under the terms and conditions of such right.

         (p)   Neither the Company nor any of its officers, directors or
     affiliates has taken or will take, directly or indirectly, any action
     designed or intended to stabilize or manipulate the price of any security
     of the Company, or which caused or resulted in, or which might in the
     future reasonably be expected to cause or result in, stabilization or
     manipulation of the price of any security of the Company.

         (q)   The Company has provided you with all financial statements since
     inception to the date hereof that are available to the officers of the
     Company, including financial statements for the six months ended June 30,
     1996.

         (r)   The Company and its subsidiaries own or possess the right to use
     all patents, trademarks, trademark registrations, service marks, service
     mark registrations, trade names, copyrights, licenses, inventions, trade
     secrets and rights described in the Prospectus as being owned by them or
     any of them or necessary for the conduct of their respective businesses,
     and the Company is not aware of any claim to the contrary or any challenge
     by any other person to the rights of the Company and its subsidiaries with
     respect to the foregoing.  The Company's business as now conducted and as
     proposed to be conducted does not and will not infringe or conflict with in
     any material respect patents, trademarks, service marks, trade names,
     copyrights, trade secrets, licenses or other intellectual property or
     franchise right of any other person.  Except as described in the
     Prospectus, no claim has been made against the Company alleging the
     infringement by the Company of any patent, trademark, service mark, trade
     name, copyright, trade secret, license in or other intellectual property
     right or franchise right of any person.

         (s)   The Company and its subsidiaries have performed all material
     obligations required to be performed by them under all contracts required
     to be filed as exhibits to the Registration Statement by Item 601(b)(10) of
     Regulation S-B under the Securities Act, and neither the Company nor its
     subsidiaries nor any other party to such contract is in default under or in
     breach of any such obligations.  Neither the Company nor its subsidiaries
     has received any notice of such default or breach.

         (t)   The Company is not involved in any labor dispute nor is any such
     dispute threatened.  The Company is not aware that (i) any executive, key
     employee

                                       7
<PAGE>
 
     or significant group of employees of the Company or any of its subsidiaries
     plans to terminate employment with the Company or any of its subsidiaries
     or (ii) any such executive or key employee is subject to any noncompete,
     nondisclosure, confidentiality, employment, consulting or similar agreement
     that would be violated by the present or proposed business activities of
     the Company and its subsidiaries.  Neither the Company nor any of its
     subsidiaries has or expects to have any liability for any prohibited
     transaction or funding deficiency or any complete or partial withdrawal
     liability with respect to any pension, profit sharing or other plan which
     is subject to the Employee Retirement Income Security Act of 1974, as
     amended ("ERISA"), to which the Company or any of its subsidiaries makes or
     ever has made a contribution and in which any employee of the Company or
     any of its subsidiaries is or has ever been a participant.  With respect to
     such plans, the Company and its subsidiaries are in compliance in all
     material respects with all applicable provisions of ERISA.

         (u)   The Company has obtained the written agreement described in
     Section 8(j) of this Agreement from each of its officers, directors and
     holders of Common Stock and or options exercisable for shares of Common
     Stock listed on Schedule B hereto.

         (v)   The Company and its subsidiaries have, and the Company and its
     subsidiaries as of the Closing Dates (as hereinafter defined) will have,
     good and marketable title in fee simple to all real property and good and
     marketable title to all personal property owned or proposed to be owned by
     them which is material to the business of the Company or of its
     subsidiaries, in each case free and clear of all liens, encumbrances and
     defects except such as are described in the Prospectus or such as would not
     have a material adverse effect on the Company and its subsidiaries
     considered as a whole; and any real property and buildings held under lease
     by the Company and its subsidiaries are held by them under valid,
     subsisting and enforceable leases with such exceptions as would not have a
     material adverse effect on the Company and its subsidiaries considered as a
     whole, in each case except as described in or contemplated by the
     Prospectus.

         (w)   The Company and its subsidiaries are insured by insurers of
     recognized financial responsibility against such losses and risks and in
     such amounts as are customary in the businesses in which they are engaged
     or propose to engage after giving effect to the transactions described in
     the Prospectus; and neither the Company nor any of its subsidiaries has any
     reason to believe that it will not be able to renew its existing insurance
     coverage as and when such coverage expires or to obtain similar coverage
     from similar insurers as may be necessary to continue their respective
     businesses at a cost that would not materially and adversely affect the
     condition (financial or other), or the earnings, business or operations of
     the Company and its subsidiaries considered as a whole, except as described
     in or contemplated by the Prospectus.

                                       8
<PAGE>
 
         (x)   Other than as contemplated by this Agreement, there is no broker,
     finder or other party that is entitled to receive from the Company any
     brokerage or finder's fee or other fee or commission as a result of any of
     the transactions contemplated by this Agreement.

         (y)   The Company and each of its subsidiaries maintain a system of
     internal accounting controls sufficient to provide reasonable assurances
     that (i) transactions are executed in accordance with management's general
     or specific authorization; (ii) transactions are recorded as necessary to
     permit preparation of financial statements in conformity with generally
     accepted accounting principles and to maintain accountability for assets;
     (iii) access to assets is permitted only in accordance with management's
     general or specific authorization; and (iv) the recorded accountability for
     assets is compared with existing assets at reasonable intervals and
     appropriate action is taken with respect to any differences.

         (z)   To the best of the Company's knowledge, neither the Company nor
     any of its subsidiaries nor any employee or agent of the Company or any of
     its subsidiaries has made any payment of funds of the Company or any of its
     subsidiaries or received or retained any payment in violation of any law,
     rule or regulation, which payment, receipt or retention of funds is of a
     character required to be disclosed in the Prospectus.

         (aa)  Neither the Company nor any of its subsidiaries is or, after
     application of the net proceeds of this offering as described under the
     caption "Use of Proceeds" in the Prospectus, will become an "investment
     company" or an entity "controlled" by an "investment company" as such terms
     are defined in the Investment Company Act of 1940, as amended.

         (bb)  Each certificate signed by an officer of the Company and
     delivered to the Underwriters or counsel for the Underwriters shall be
     deemed to be a representation and warranty by the Company as to the matters
     covered thereby.

         (cc)  The stock records provided to the Representatives and their
     counsel are correct in all material respects.

         3.    Purchase by, and Sale and Delivery to, Underwriters -- Closing
               --------------------------------------------------------------
Dates.  The Company agrees to sell to the Underwriters the Firm Stock; and on
- -----                                                                        
the basis of the representations, warranties, covenants and agreements herein
contained, but subject to the terms and conditions herein set forth, the
Underwriters agree, severally and not jointly, to purchase the Firm Stock from
the Company, the number of shares of Firm Stock to be purchased by each
Underwriter being set opposite its name in Schedule A, subject to adjustment in
accordance with Section 12 hereof.

                                       9
<PAGE>
 
         The purchase price per share to be paid by the Underwriters to the
Company will be $[      ] per share (the "Purchase Price").

         The Company will deliver the Firm Stock to the Representatives for the
respective accounts of the several Underwriters in the form of definitive
certificates, issued in such names and in such denominations as the
Representatives may direct by notice in writing to the Company given at or prior
to 12:00 Noon, New York Time, on the second full business day preceding the
First Closing Date (as defined below) or, if no such direction is received, in
the names of the respective Underwriters or in such other names as Cowen may
designate (solely for the purpose of administrative convenience) and in such
denominations as Cowen may determine, against payment of the aggregate Purchase
Price therefor by certified or official bank check or checks in Clearing House
funds (next day funds), payable to the order of the Company, all at the offices
of Foley, Hoag & Eliot LLP, One Post Office Square, Boston, Massachusetts 02109.
The time and date of the delivery and closing shall be at 10:00 A.M., New York
Time, on [             ], 1996, in accordance with Rule 15c6-1 of the Exchange
Act.  The time and date of such payment and delivery are herein referred to as
the "First Closing Date".  The First Closing Date and the location of, delivery
of, and the form of payment for, the Firm Stock may be varied by agreement
between the Company and Cowen.  The First Closing Date may be postponed pursuant
to the provisions of Section 12.

         The Company shall make the certificates for the Stock available to the
Representatives for examination on behalf of the Underwriters not later than
10:00 A.M., New York Time, on the business day preceding the First Closing Date
at the offices of Cowen & Company, Financial Square, New York, New York 10005.

         It is understood that Cowen or Oppenheimer or Volpe, individually and
not as Representatives of the several Underwriters, may (but shall not be
obligated to) make payment to the Company on behalf of any Underwriter or
Underwriters, for the Stock to be purchased by such Underwriter or Underwriters.
Any such payment by Cowen, Oppenheimer or Volpe, shall not relieve such
Underwriter or Underwriters from any of its or their other obligations
hereunder.

         The several Underwriters agree to make an initial public offering of
the Firm Stock at the initial public offering price as soon after the
effectiveness of the Registration Statement as in their judgment is advisable.
The Representatives shall promptly advise the Company of the making of the
initial public offering.

         For the purpose of covering any over-allotments in connection with the
distribution and sale of the Firm Stock as contemplated by the Prospectus, the
Company hereby grants to the Underwriters an option to purchase, severally and
not jointly, some or all of the shares of Optional Stock.  The price per share
to be paid for the Optional Stock shall be the Purchase Price.  The option
granted hereby may be exercised as to all or any part of the Optional Stock at
any time, and from time to time, not more than thirty (30) days subsequent to
the effective date of this Agreement.  No Optional Stock shall be sold and

                                       10
<PAGE>
 
delivered unless the Firm Stock previously has been, or simultaneously is, sold
and delivered.  The right to purchase the Optional Stock or any portion thereof
may be surrendered and terminated at any time upon notice by the Underwriters to
the Company.

         The option granted hereby may be exercised by the Underwriters by
giving written notice from Cowen to the Company setting forth the number of
shares of the Optional Stock to be purchased by them and the date and time for
delivery of and payment for the Optional Stock.  Each date and time for delivery
of and payment for the Optional Stock (which may be the First Closing Date, but
not earlier) is herein called the "Option Closing Date" and shall in no event be
earlier than two (2) business days nor later than ten (10) business days after
written notice is given. (The Option Closing Date and the First Closing Date are
herein called the "Closing Dates.")  All purchases of Optional Stock from the
Company shall be made on a pro rata basis.  Optional Stock shall be purchased
for the account of each Underwriter in the same proportion as the number of
shares of Firm Stock set forth opposite such Underwriter's name in Schedule A
hereto bears to the total number of shares of Firm Stock (subject to adjustment
by the Underwriters to eliminate odd lots).  Upon exercise of the option by the
Underwriters, the Company agrees to sell to the Underwriters the number of
shares of Optional Stock set forth in the written notice of exercise and the
Underwriters agree, severally and not jointly and subject to the terms and
conditions herein set forth, to purchase the number of such shares determined as
aforesaid.

         The Company will deliver the Optional Stock to the Underwriters (in
the form of definitive certificates)  issued in such names and in such
denominations as the Representatives may direct by notice in writing to the
Company given at or prior to 12:00 Noon, New York Time, on the second full
business day preceding the Option Closing Date or, if no such direction is
received, in the names of the respective Underwriters or in such other names as
Cowen may designate (solely for the purpose of administrative convenience) and
in such denominations as Cowen may determine, against payment of the aggregate
Purchase Price therefor by certified or official bank check or checks in
Clearing House funds (next day funds), payable to the order of the Company, all
at the offices of Foley, Hoag & Eliot LLP, One Post Office Square, Boston,
Massachusetts 02109.  The Option Closing Date and the location of delivery of,
and the form of payment for, the Option Stock may be varied by agreement between
the Company and Cowen.  The Option Closing Date may be postponed pursuant to the
provisions of Section 12.

         4.    Covenants and Agreements of the Company.  The Company covenants
               ---------------------------------------                        
and agrees with the several Underwriters that:

         (a)   The Company will (i) use its best efforts to comply with the
     provisions of and make all requisite filings with the Commission pursuant
     to Rule 424 of the Rules and Regulations, (ii) if the Company and the
     Representatives have determined not to proceed pursuant to Rule 430A of the
     Rules and Regulations, use its best efforts to cause the Registration
     Statement to become effective, (iii) if the Company and the Representatives
     have determined to proceed pursuant to Rule 430A, use its

                                       11
<PAGE>
 
     best efforts to comply with the provisions of and make all requisite
     filings with the Commission pursuant to Rule 430A of the Rules and
     Regulations and (iv) if the Company and the Representatives have determined
     to deliver Prospectuses pursuant to Rule 434 of the Rules and Regulations,
     to use its best efforts to comply with all the applicable provisions
     thereof.  The Company will advise the Representatives promptly as to the
     time at which the Registration Statement becomes effective, will advise the
     Representatives promptly of the issuance by the Commission of any stop
     order suspending the effectiveness of the Registration Statement or of the
     institution of any proceedings for that purpose, and will use its best
     efforts to prevent the issuance of any such stop order and to obtain as
     soon as possible the lifting thereof, if issued.  The Company will advise
     the Representatives promptly of the receipt of any comments of the
     Commission or any request by the Commission for any amendment of or
     supplement to the Registration Statement or the Prospectus or for
     additional information and will not at any time file any amendment to the
     Registration Statement or supplement to the Prospectus which shall not
     previously have been submitted to the Representatives a reasonable time
     prior to the proposed filing thereof or to which the Representatives shall
     reasonably object in writing or which is not in compliance with the
     Securities Act and the Rules and Regulations.

         (b)   The Company will prepare and file with the Commission, promptly
     upon the request of the Representatives, any amendments or supplements to
     the Registration Statement or the Prospectus which in the opinion of the
     Representatives may be necessary to enable the several Underwriters to
     continue the distribution of the Stock and will use its best efforts to
     cause the same to become effective as promptly as possible.

         (c)   If at any time after the effective date of the Registration
     Statement when a prospectus relating to the Stock is required to be
     delivered under the Securities Act any event relating to or affecting the
     Company or any of its subsidiaries occurs as a result of which the
     Prospectus or any other prospectus as then in effect would include an
     untrue statement of a material fact, or omit to state any material fact
     necessary to make the statements therein, in light of the circumstances
     under which they were made, not misleading, or if it is necessary at any
     time to amend the Prospectus to comply with the Securities Act, the Company
     will promptly notify the Representatives thereof and will prepare an
     amended or supplemented prospectus which will correct such statement or
     omission; and in case any Underwriter is required to deliver a prospectus
     relating to the Stock nine (9) months or more after the effective date of
     the Registration Statement, the Company upon the request of the
     Representatives and at the expense of such Underwriter, will prepare
     promptly such prospectus or prospectuses as may be necessary to permit
     compliance with the requirements of Section 10(a)(3) of the Securities Act.

         (d)   The Company will deliver to the Representatives, at or before the
     First Closing, signed copies of the Registration Statement, as originally
     filed with the

                                       12
<PAGE>
 
     Commission, and all amendments thereto including all financial statements
     and exhibits thereto, and will deliver to the Representatives such number
     of copies of the Registration Statement, including such financial
     statements, but without exhibits, and all amendments thereto, as the
     Representatives may reasonably request.  The Company will deliver or mail
     to or upon the order of the Representatives, from time to time until the
     effective date of the Registration Statement, as many copies of the Pre-
     effective Prospectus as the Representatives may reasonably request.  The
     Company will deliver or mail to or upon the order of the Representatives on
     the date of the initial public offering, and thereafter from time to time
     during the period when delivery of a prospectus relating to the Stock is
     required under the Securities Act, as many copies of the Prospectus, in
     final form or as thereafter amended or supplemented, as the Representatives
     may reasonably request; provided, however, that the expense of the
                             --------  -------                         
     preparation and delivery of any prospectus required for use nine (9) months
     or more after the effective date of the Registration Statement shall be
     borne by the Underwriters required to deliver such prospectus.

         (e)   The Company will make generally available to its stockholders as
     soon as practicable, but not later than fifteen (15) months after the
     effective date of the Registration Statement, an earnings statement which
     will be in reasonable detail (but which need not be audited) and which will
     comply with Section 11(a) of the Securities Act, covering a period of at
     least twelve (12) months beginning after the "effective date" (as defined
     in Rule 158 under the Securities Act) of the Registration Statement.

         (f)   The Company will cooperate with the Representatives to enable the
     Stock to be registered or qualified for offering and sale by the
     Underwriters and by dealers under the securities laws of such jurisdictions
     as the Representatives may designate and, at the request of the
     Representatives, will make such applications and furnish such consents to
     service of process or other documents as may be required of it as the
     issuer of the Stock for that purpose; provided, however, that the Company
                                           --------  -------                  
     shall not be required to qualify to do business or to file a general
     consent (other than that arising out of the offering or sale of the Stock)
     to service of process in any such jurisdiction where it is not now so
     subject.  The Company will, from time to time, prepare and file such
     statements and reports as are or may be required of it as the issuer of the
     Stock to continue such qualifications in effect for so long a period as the
     Representatives may reasonably request for the distribution of the Stock.
     The Company will advise the Representatives promptly after the Company
     becomes aware of the suspension of the qualifications or registration of
     (or any such exception relating to) the Common Stock of the Company for
     offering, sale or trading in any jurisdiction or of any initiation or
     threat of any proceeding for any such purpose, and in the event of the
     issuance of any orders suspending such qualifications, registration or
     exception, the Company will, with the cooperation of the Representatives,
     use its best efforts to obtain the withdrawal thereof.

                                       13
<PAGE>
 
         (g)   The Company will furnish to its stockholders annual reports
     containing financial statements certified by independent public accountants
     and with quarterly summary financial information in reasonable detail which
     may be unaudited.  During the period of five (5) years from the date
     hereof, the Company will deliver to the Representatives and, upon request,
     to each of the other Underwriters, as soon as they are available, copies of
     each annual report of the Company and each other report furnished by the
     Company to its stockholders and will deliver to the Representatives, (i) as
     soon as they are available, copies of any other reports (financial or
     other) which the Company shall publish or otherwise make available to any
     of its stockholders as such, (ii) as soon as they are available, copies of
     any reports and financial statements furnished to or filed with the
     Commission or any national securities exchange and (iii) from time to time
     such other information concerning the Company as you may request.  So long
     as the Company's subsidiaries are active, such financial statements will be
     on a consolidated basis to the extent the accounts of the Company and its
     subsidiaries are consolidated in reports furnished to its stockholders
     generally.

         (h)   The Company will use its best efforts to cause the Stock to be
     accepted for quotation on the Nasdaq National Market concurrently with the
     effectiveness of the Registration Statement.

         (i)   The Company will maintain a transfer agent and registrar for its
     Common Stock.

         (j)   Prior to filing its quarterly statements on Form 10-Q, the
     Company will have its independent auditors perform a limited quarterly
     review of its quarterly results.

         (k) The Company will not offer, sell, assign, transfer, encumber,
     contract to sell, grant an option, right or warrant to purchase or
     otherwise dispose (or announce any offer, assignment, sale, transfer,
     encumbrance, contract to sell, grant of an option, right or warrant to
     purchase or other disposition) of any shares of, Common Stock or securities
     convertible into or exercisable or exchangeable for Common Stock
     (including, without limitation, Common Stock of the Company which may be
     deemed to be beneficially owned by the undersigned in accordance with the
     Rules and Regulations) for 180 days commencing on the date of the final
     prospectus, other than (i) the Company's sale of Common Stock hereunder and
     the Company's issuance of Common Stock upon the exercise of warrants and
     stock options which are presently outstanding or described in the
     Prospectus, (ii) the Company's grant of stock options pursuant to the 1996
     Incentive and Nonqualified Stock Option Plan in accordance with the terms
     and provisions of that plan described in the Prospectus and (iii) the
     Company's issuance of common stock pursuant to the 1996 Employee Stock
     Purchase Plan in accordance with the terms and provisions of that plan
     described in the Prospectus.

                                       14
<PAGE>
 
         (l)   The Company will furnish to the Representatives a signed copy of
     each report on Form SR as filed pursuant to Rule 463 of the Rules and
     Regulations.

         (m)   The Company will apply the net proceeds from the sale of the
     Stock as set forth in the description under "Use of Proceeds" in the
     Prospectus, which description complies in all respects with the
     requirements of Item 504 of Regulation S-B.

         (n)   The Company will supply you with copies of all correspondence to
     and from, and all documents issued to and by, the Commission in connection
     with the registration of the Stock under the Securities Act.

         (o)   Prior to the Closing Dates, the Company will furnish to you, as
     soon as they have been prepared, copies of any unaudited interim
     consolidated financial statements of the Company and any of its
     subsidiaries for any periods subsequent to the periods covered by the
     financial statements appearing in the Registration Statement and the
     Prospectus.

         (p)   Prior to the Closing Dates, the Company will issue no press
     release or other communications directly or indirectly and hold no press
     conference with respect to the Company or any of its subsidiaries, the
     financial condition, results of operations, business, prospects, assets or
     liabilities of any of them, or the offering of the Stock, without your
     prior written consent.  For a period of twelve (12) months following the
     Closing Date, the Company will use its best efforts to provide to you
     copies of each press release or other public communication with respect to
     the financial condition, results of operations, business, prospects, assets
     or liabilities of the Company at least twenty-four (24) hours prior to the
     public issuance thereof or during such longer advance period as may
     reasonably be practicable.

         (q)   During the period of five (5) years hereafter, the Company will
     furnish to the Representatives, and upon request of the Representatives, to
     each of the Underwriters: (i) as soon as practicable after the end of each
     fiscal year, copies of the Annual Report of the Company containing the
     balance sheet of the Company as of the close of such fiscal year and
     statements of income, stockholders' equity and cash flows for the year then
     ended and the opinion thereon of the Company's independent public
     accountants; (ii) as soon as practicable after the filing thereof, copies
     of each proxy statement, Annual Report on Form 10-K, Quarterly Report on
     Form 10-Q, Current Report on Form 8-K or other report filed by the Company
     with the Commission, or the NASD or The Nasdaq Stock Market, Inc. or any
     securities exchange; and (iii) as soon as available, copies of any report
     or communication of the Company mailed generally to holders of the Common
     Stock.

         5.    Payment of Expenses.  (a)  The Company will pay (directly or by
               -------------------                                            
reimbursement) all costs, fees and expenses incurred in connection with or
incident to the performance of its obligations under this Agreement and in
connection with the transactions

                                       15
<PAGE>
 
contemplated hereby, including but not limited to (i) all expenses and taxes
incident to the issuance and delivery of the Stock to the Representatives; (ii)
all expenses incident to the registration of the Stock under the Securities Act;
(iii) the costs of preparing stock certificates (including printing and
engraving costs); (iv) all fees and expenses of the registrar of and transfer
agent for the Stock; (v) all necessary issue, transfer and other stamp taxes in
connection with the issuance and sale of the Stock to the Underwriters; (vi)
fees and expenses of the Company's counsel and the Company's independent
accountants; (vii) all costs and expenses incurred in connection with the
preparation, printing, filing, shipping and distribution of the Registration
Statement, each Pre-effective Prospectus and the Prospectus (including all
exhibits and financial statements) and all amendments and supplements provided
for herein, the "Agreement Among Underwriters" between the Representatives and
the Underwriters, the Master Selected Dealers' Agreement, the Underwriters'
Questionnaire and the Blue Sky memoranda and this Agreement; (viii) all filing
fees, attorneys' fees and expenses incurred by the Company or the Underwriters
in connection with exemptions from the qualifying or registering (or obtaining
qualification or registration of) all or any part of the Stock for offer and
sale and determination of its eligibility for investment under the Blue Sky or
other securities laws of such jurisdictions as the Representatives may
designate; (ix) all fees and expenses paid or incurred in connection with
filings made with the NASD and The Nasdaq Stock Market, Inc.; and (x) all other
reasonable costs and expenses incident to the performance of its obligations
hereunder which are not otherwise specifically provided for in this Section.

         (b)   In addition to their other obligations under Section 6(a) hereof,
the Company agrees that, as an interim measure during the pendency of any claim,
action, investigation, inquiry or other proceeding arising out of or based upon
(i) any statement or omission or any alleged statement or omission described in
Section 6(a) or (ii) any breach or inaccuracy in its representations and
warranties, it will reimburse each Underwriter on a quarterly basis for all
reasonable legal or other expenses incurred in connection with investigating or
defending any such claim, action, investigation, inquiry or other proceeding,
notwithstanding the absence of a judicial determination as to the propriety and
enforceability of the Company's obligation to reimburse each Underwriter for
such expenses and the possibility that such payments might later be held to have
been improper by a court of competent jurisdiction.  To the extent that any such
interim reimbursement payment is so held to have been improper, each Underwriter
shall promptly return it to the Company together with interest, compounded
daily, determined on the basis of the prime rate (or other commercial lending
rate for borrowers of the highest credit standing) announced from time to time
by [          ], New York, New York (the "Prime Rate").  Any such interim
reimbursement payments which are not made to an Underwriter in a timely manner
as provided below shall bear interest at the Prime Rate from the due date for
such reimbursement.  This expense reimbursement agreement will be in addition to
any other liability which the Company may otherwise have.  The request for
reimbursement will be sent to the Company.

         (c)   In addition to its other obligations under Section 6(b) hereof,
each Underwriter severally agrees that, as an interim measure during the
pendency of any claim,

                                       16
<PAGE>
 
action, investigation, inquiry or other proceeding arising out of or based upon
any statement or omission, or any alleged statement or omission, described in
Section 6(b) hereof which relates to information furnished by the Underwriters
to the Company, it will reimburse the Company (and, to the extent applicable,
each officer, director, or controlling person) on a quarterly basis for all
reasonable legal or other expenses incurred in connection with investigating or
defending any such claim, action, investigation, inquiry or other proceeding,
notwithstanding the absence of a judicial determination as to the propriety and
enforceability of the Underwriters' obligation to reimburse the Company (and, to
the extent applicable, each officer, director, or controlling person) for such
expenses and the possibility that such payments might later be held to have been
improper by a court of competent jurisdiction.  To the extent that any such
interim reimbursement payment is so held to have been improper, the Company
(and, to the extent applicable, each officer, director, or controlling person)
shall promptly return it to the Underwriters together with interest, compounded
daily, determined on the basis of the Prime Rate.  Any such interim
reimbursement payments which are not made to the Company within thirty (30) days
of a request for reimbursement shall bear interest at the Prime Rate from the
date of such request.  This indemnity agreement will be in addition to any
liability which such Underwriter may otherwise have.

         (d)   It is agreed that any controversy arising out of the operation of
the interim reimbursement arrangements set forth in paragraph (b) or (c) of this
Section 5, including the amounts of any requested reimbursement payments and the
method of determining such amounts, shall be settled by arbitration conducted
under the provisions of and pursuant to the provisions of the Constitution and
Rules of the Board of Governors of the New York Stock Exchange, Inc. or pursuant
to the Code of Arbitration Procedure of the NASD.  Any such arbitration must be
commenced by service of a written demand for arbitration or written notice of
intention to arbitrate, therein electing the arbitration tribunal.  In the event
the party demanding arbitration does not make such designation of an arbitration
tribunal in such demand or notice, then the party responding to said demand or
notice is authorized to do so.  Such an arbitration would be limited to the
operation of the interim reimbursement provisions contained in paragraph (b) or
(c) of this Section 5, as applicable, and would not resolve the ultimate
propriety or enforceability of the obligation to reimburse expenses which is
created by the provisions of Section 6.

         6.    Indemnification and Contribution.  (a) The Company agrees to
               --------------------------------                            
indemnify and hold harmless each Underwriter and each person, if any, who
controls such Underwriter within the meaning of the Securities Act and the
respective officers, directors, partners, employees, representatives and agents
of each of such Underwriter (collectively, the "Underwriter Indemnified Parties"
and, each, an "Underwriter Indemnified Party"), against any losses, claims,
damages, liabilities or expenses (including, unless the Company elects to assume
the defense as described in this Section 6(a), the reasonable cost of
investigating and defending against any claims therefor and counsel fees
incurred in connection therewith), joint or several, which may be based upon the
Securities Act, or any other statute or at common law,  on the ground or alleged
ground that any Pre-effective Prospectus, the Registration Statement or the
Prospectus (or any Pre-effective Prospectus, the Registration

                                       17
<PAGE>
 
Statement or the Prospectus as from time to time amended or supplemented)
includes or allegedly includes an untrue statement of a material fact or omits
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, unless such statement or omission was made in reliance
upon, and in conformity with, written information furnished to the Company by
any Underwriter, directly or through the Representatives, specifically for use
in the preparation thereof,  provided, that with respect to any untrue statement
or omission or alleged untrue statement or omission made in any Pre-effective
Prospectus, the indemnity agreement contained in this subsection (a) shall not
inure to the benefit of any Underwriter Indemnified Party from whom the person
asserting any such losses, claims, damages or liabilities purchased the shares
of Stock concerned to the extent that any such loss, claim, damage or liability
of such Underwriter Indemnified Party results from the fact that a copy of the
Prospectus was not sent or given to such person at or prior to the written
confirmation of the sale of such shares of Stock to such person as required by
the Securities Act and if the untrue statement or omission concerned has been
corrected in the Prospectus.  An Underwriter Indemnified Party shall give prompt
written notice to the Company in writing within a reasonable time after the
summons or other first legal process giving information of the nature of the
claim shall have been served upon the Underwriter Indemnified Party; provided
that the failure of any Underwriter Indemnified Party to give notice shall not
relieve the Company of its obligations under this Section 6(a), except to the
extent that such failure has materially and adversely affected the rights of the
Company.  The Company will be entitled to participate at its own expense in the
defense or, if it so elects, to assume the defense, of any suit brought to
enforce any such liability, but if the Company elects to assume the defense,
such defense shall be conducted by counsel chosen by it and reasonably
acceptable to the Underwriters.  In the event the Company elects to assume the
defense of any such suit and retain such counsel, any Underwriter Indemnified
Parties, defendant or defendants in the suit, may retain additional counsel but
shall bear the fees and expenses of such counsel unless (i) the Company shall
have specifically authorized the retaining of such counsel or (ii) the parties
to such suit include any such Underwriter Indemnified Parties and the Company,
and such Underwriter Indemnified Parties at law or in equity have been advised
by counsel to the Underwriters that one or more legal defenses may be available
to it or them which may not be available to the Company, in which case the
Company shall not be entitled to assume the defense of such suit notwithstanding
its obligation to bear the fees and expenses of such counsel.  The Company shall
not be liable to indemnify any person for any settlement of any  such claim
effected without the Company's consent. This indemnity agreement is not
exclusive and will be in addition to any liability which the Company might
otherwise have and shall not limit any rights or remedies which may otherwise be
available at law or in equity to each Underwriter Indemnified Party.

         (b)   Each Underwriter severally and not jointly agrees to indemnify
and hold harmless the Company, each of its directors, each of its officers who
have signed the Registration Statement and each person, if any, who controls the
Company within the meaning of the Securities Act (collectively, the "Company
Indemnified Parties"), against any losses, claims, damages, liabilities or
expenses (including, unless the Underwriter elects to

                                       18
<PAGE>
 
assume the defense as described in this Section 6(b))  the reasonable cost of
investigating and defending against any claims therefor and counsel fees
incurred in connection therewith), joint or several, which arise out of or are
based in whole or in part upon the Securities Act, the Exchange Act or any other
federal, state, local or foreign statute or regulation, or at common law, on the
ground or alleged ground that any Pre-effective Prospectus, the Registration
Statement or the Prospectus (or any Pre-effective Prospectus, the Registration
Statement or the Prospectus, as from time to time amended and supplemented)
includes an untrue statement of a material fact or omits to state a material
fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances in which they were made, not misleading,
but only insofar as any such statement or omission was made in reliance upon,
and in conformity with, written information furnished to the Company by such
Underwriter, directly or through the Representatives, specifically for use in
the preparation thereof.   A  Company Indemnified Party shall give prompt
written notice to the Underwriter  in writing within a reasonable time after the
summons or other first legal process giving information of the nature of the
claim shall have been served upon the Company Indemnified Party; provided that
the failure of any Company  Indemnified Party to give notice shall not relieve
the Underwriter of its obligations under this Section 6 (a), except to the
extent that such failure has materially and adversely affected the rights of the
Underwriter.  Such Underwriter shall be entitled to participate at its own
expense in the defense, or, if it so elects, to assume the defense of any suit
brought to enforce any such liability, but, if such Underwriter elects to assume
the defense, such defense shall be conducted by counsel chosen by it and
approved by the Company.  In the event that any Underwriter elects to assume the
defense of any such suit and retain such counsel, the Company Indemnified
Parties and any other Underwriter or Underwriters or controlling person or
persons, defendant or defendants in the suit, shall bear the fees and expenses
of any additional counsel retained by them, respectively unless (i) the
Underwriter shall have specifically authorized the retaining of such counsel or
(ii) the parties to such suit include any such Company Indemnified Parties and
the Underwriters, and such Company Indemnified Parties at law or in equity have
been advised by counsel to the Company that one or more legal defenses may be
available to it or them which may not be available to the Underwriters, in which
case the Underwriters shall not be entitled to assume the defense of such suit
notwithstanding their obligation to bear the fees and expenses of such counsel.
The Underwriter against whom indemnity may be sought shall not be liable to
indemnify any person for any settlement of any such claim effected without such
Underwriter's consent.  This indemnity agreement is not exclusive and will be in
addition to any liability which such Underwriter might otherwise have and shall
not limit any rights or remedies which may otherwise be available at law or in
equity to any Company Indemnified Party.

         (c)   If the indemnification provided for in this Section 6 is
unavailable or insufficient to hold harmless an indemnified party under
subsection (a) or (b) above in respect of any losses, claims, damages,
liabilities or expenses (or actions in respect thereof) referred to herein, then
each indemnifying party shall contribute to the amount paid or payable by such
indemnified party as a result of such losses, claims, damages, liabilities or
expenses (or actions in respect thereof) in such proportion as is appropriate to
reflect the

                                       19
<PAGE>
 
relative benefits received by the Company on the one hand and the Underwriters
on the other from the offering of the Stock.  If, however, the allocation
provided by the immediately preceding sentence is not permitted by applicable
law, then each indemnifying party shall contribute to such amount paid or
payable by such indemnified party in such proportion as is appropriate to
reflect not only such relative benefits but also the relative fault of the
Company on the one hand and the Underwriters on the other in connection with the
statements or omissions which resulted in such losses, claims, damages,
liabilities or expenses (or actions in respect thereof), as well as any other
relevant equitable considerations.  The relative benefits received by the
Company on the one hand and the Underwriters on the other shall be deemed to be
in the same proportion as the total net proceeds from the offering (before
deducting expenses) received by the Company bear to the total underwriting
discounts and commissions received by the Underwriters, in each case as set
forth in the table on the cover page of the Prospectus.  The relative fault
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by the Company or the
Underwriters and the parties' relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission.  The Company
and the Underwriters agree that it would not be just and equitable if
contribution were determined by pro rata allocation (even if the Underwriters
were treated as one entity for such purpose) or by any other method of
allocation which does not take account of the equitable considerations referred
to above.  The amount paid or payable by an indemnified party as a result of the
losses, claims, damages, liabilities or expenses (or actions in respect thereof)
referred to above shall be deemed to include any legal or other expenses
reasonably incurred by such indemnified party in connection with investigating
defending, settling or compromising any such claim.  Notwithstanding the
provisions of this subsection (c), no Underwriter shall be required to
contribute any amount in excess of the amount by which the total price at which
the shares of the Stock underwritten by it and distributed to the public were
offered to the public exceeds the amount of any damages which such Underwriter
has otherwise been required to pay by reason of such untrue or alleged untrue
statement or omission or alleged omission.  The Underwriters' obligations to
contribute are several in proportion to their respective underwriting
obligations and not joint.  No person guilty of fraudulent misrepresentation
(within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent
misrepresentation.

         7.    Survival of Indemnities, Representations, Warranties, etc.  The
               ---------------------------------------------------------      
respective indemnities, covenants, agreements, representations, warranties and
other statements of the Company and the several Underwriters, as set forth in
this Agreement or made by them respectively, pursuant to this Agreement, shall
remain in full force and effect, regardless of any investigation made by or on
behalf of any Underwriter, the Company or any of its officers or directors or
any controlling person, and shall survive delivery of and payment for the Stock.

         8.    Conditions of Underwriters' Obligations.  The respective
               ---------------------------------------                 
obligations of the several Underwriters hereunder shall be subject to the
accuracy, at and (except as

                                       20
<PAGE>
 
otherwise stated herein) as of the date hereof and at and as of the Closing
Dates, of the representations and warranties made herein by the Company, to
compliance at and as of the Closing Dates by the Company with its covenants and
agreements herein contained and other provisions hereof to be satisfied at or
prior to the Closing Dates, and to the following additional conditions:

         (a)   The Registration Statement shall have become effective and no
     stop order suspending the effectiveness thereof shall have been issued and
     no proceedings for that purpose shall have been initiated or, to the
     knowledge of the Company or the Representatives, shall be threatened by the
     Commission, and any request for additional information on the part of the
     Commission (to be included in the Registration Statement or the Prospectus
     or otherwise) shall have been complied with to the reasonable satisfaction
     of the Representatives. Any filings of the Prospectus, or any supplement
     thereto, required pursuant to Rule 424(b) or Rule 434 of the Rules and
     Regulations, shall have been made in the manner and within the time period
     required by Rule 424(b) and Rule 434 of the Rules and Regulations, as the
     case may be.

         (b)   The Representatives shall have been satisfied that there shall
     not have occurred any change, on a consolidated basis, prior to the
     respective Closing Dates in the condition (financial or other), properties,
     business, management, prospects, net worth or results of operations of the
     Company and its subsidiaries considered as a whole, or any change in the
     capital stock, or long-term debt or any material change in the short-term
     debt of the Company and any of its subsidiaries considered as a whole, such
     that (i) the Registration Statement or the Prospectus, or any amendment or
     supplement thereto, contains an untrue statement of fact which, in the
     opinion of the Representatives, is material, or omits to state a fact
     which, in the opinion of the Representatives, is required to be stated
     therein or is necessary to make the statements therein not misleading or
     (ii) it is impracticable in the reasonable judgment of the Representatives
     to proceed with the public offering or purchase the Stock as contemplated
     hereby.

         (c)   The Representatives shall be satisfied that no legal or
     governmental action, suit or proceeding affecting the Company which is
     material and adverse to the Company or which affects or may affect the
     Company's ability to perform its obligations under this Agreement shall
     have been instituted or threatened, and there shall have occurred no
     material adverse development in any existing such action, suit or
     proceeding.

         (d)   At the time of execution of this Agreement, the Representatives
     shall have received from Ernst & Young LLP, independent certified public
     accountants, a letter, dated the date hereof, in form and substance
     satisfactory to the Underwriters.

         (e)   The Representatives shall have received from Ernst & Young LLP,
     independent certified public accountants, letters, dated the Closing Dates,
     to the effect that such accountants reaffirm, as of the Closing Dates, and
     as though made on the

                                       21
<PAGE>
 
     Closing Dates, the statements made in the letter furnished by such
     accountants pursuant to subsection (d) of this Section 8.

         (f)   The Representatives shall have received from Foley, Hoag & Eliot
     LLP, counsel for the Company, their opinions, dated the Closing Dates, to
     the effect set forth in Exhibit I hereto.

         (g)   The Representatives shall have received from Skadden, Arps,
     Slate, Meagher & Flom, counsel for the Underwriters, their opinions, dated
     the Closing Dates, with respect to the incorporation of the Company, the
     validity of the Stock, the Registration Statement and the Prospectus and
     such other related matters as it may reasonably request, and the Company
     shall have furnished to such counsel such documents as they may request for
     the purpose of enabling them to pass upon such matters.

         (h)   The Representatives shall have received a certificate, dated the
     Closing Dates, of the Chief Executive Officer and the chief financial or
     accounting officer of the Company to the effect that:

               (i)     No stop order suspending the effectiveness of the
         Registration Statement has been issued, and to the best of the
         knowledge of the signers, no proceedings for that purpose have been
         instituted or are pending or contemplated under the Securities Act;

               (ii)    Neither any Pre-effective Prospectus, as of its date, nor
         the Registration Statement nor the Prospectus, nor any amendment or
         supplement thereto, as of the time when the Registration Statement
         became effective and at all times subsequent thereto up to the delivery
         of such certificate, included any untrue statement of a material fact
         or omitted to state any material fact required to be stated therein or
         necessary to make the statements therein, in light of the circumstances
         under which they were made, not misleading;

               (iii)   The representations and warranties of the Company in this
         Agreement are true and correct at and as of the Closing Dates, and the
         Company has complied with all the agreements and performed or satisfied
         all the conditions contained in this Agreement on its part to be
         performed or satisfied at or prior to the Closing Dates; and

               (iv)    Since the respective dates as of which information is
         given in the Registration Statement and the Prospectus, and except as
         disclosed in or contemplated by the Prospectus (including, without
         limitation with respect to the stock plans, the warrant and the
         conversion of the $5.83 Stock), (A) there has not been any material
         adverse

                                       22
<PAGE>
 
         change or a development involving a material adverse change in the
         condition (financial or other), properties, business, management,
         prospects, net worth or results of operations of the Company and its
         subsidiaries considered as a whole; (B) the business and operations
         conducted by the Company and its subsidiaries have not sustained a loss
         by strike, fire, flood, accident or other calamity (whether or not
         insured) of such a character as to interfere materially with the
         conduct of the business and operations of the Company and its
         subsidiaries considered as a whole; (C) no legal or governmental
         action, suit or proceeding has become pending or has been threatened
         against the Company which is material to the Company, whether or not
         arising from transactions in the ordinary course of business, or which
         may materially and adversely affect the transactions contemplated by
         this Agreement; (D) neither the Company nor any of its subsidiaries has
         incurred any material liability or obligation, direct, contingent or
         indirect, or entered into any material transactions, not in the
         ordinary course of business; (E) there has not been any change in the
         capital stock or long-term debt, or any material change in the short-
         term debt, of the Company and its subsidiaries considered as a whole;
         and (F) the Company has not declared or paid any dividend, or made any
         other distribution, upon its outstanding capital stock payable to
         stockholders of record on a date prior to the Closing Date and has not
         repurchased or otherwise acquired any of its capital stock.

         (i)   The Company shall have furnished to the Representatives such
     additional certificates as the Representatives may have reasonably
     requested as to the accuracy, at and as of the Closing Dates, of the
     representations and warranties made herein by it and as to compliance at
     and as of the Closing Dates by it with its covenants and agreements herein
     contained and other provisions hereof to be satisfied at or prior to the
     Closing Dates, and as to satisfaction of the other conditions to the
     obligations of the Underwriters hereunder.

         (j)   Cowen shall have received the written agreements of the officers,
     directors and holders of Common Stock listed in Schedule B that each will
     not, without the prior written consent of Cowen, on behalf of the
     Representatives, offer, sell, assign, transfer, encumber, contract to sell,
     grant an option, right or warrant to purchase or otherwise dispose of, any
     shares of Common Stock or any security convertible into or exchangeable or
     exercisable for shares of Common Stock (including, without limitation,
     Common Stock of the Company which may be deemed to be beneficially owned by
     the undersigned in accordance with the Rules and Regulations) for 180 days
     commencing on the date of the final Prospectus.

         (k)   The Nasdaq National Market shall have approved the stock for
     listing, subject only to official notice of issuance.

                                       23
<PAGE>
 
         All opinions, certificates, letters and other documents will be in
compliance with the provisions hereunder only if they are satisfactory in form
and substance to the Representatives.  The Company will furnish to the
Representatives conformed copies of such opinions, certificates, letters and
other documents as the Representatives shall reasonably request.  If any of the
conditions hereinabove provided for in this Section shall not have been
satisfied when and as required by this Agreement, this Agreement may be
terminated by the Representatives by notifying the Company of such termination
in writing or by telegram at or prior to the Closing Dates, but Cowen, on behalf
of the Representatives, shall be entitled to waive any of such conditions.

         9.    Effective Date.  This Agreement shall become effective
               --------------                                        
immediately as to Sections 5, 6, 7, 9, 10, 11, 13, 14, 15, 16 and 17 and, as to
all other provisions, at [    ] a.m. New York City time on the first full
business day following the effectiveness of the Registration Statement or at
such earlier time after the Registration Statement becomes effective as the
Representatives may determine on and by notice to the Company or by release of
any of the Stock for sale to the public.  For the purposes of this Section 9,
the Stock shall be deemed to have been so released upon the release for
publication of any newspaper advertisement relating to the Stock or upon the
release by you of telegrams (a) advising Underwriters that the shares of Stock
are released for public offering or (b) offering the Stock for sale to
securities dealers, whichever may occur first.

         10.   Termination.  This Agreement (except for the provisions of
               -----------                                               
Section 5) may be terminated by the Company at any time, prior to the time that
this Agreement shall become effective as to all of its provisions, by notice to
the Representatives, and may be terminated by the Representatives at any time,
prior to the time that this Agreement shall become effective as to all of its
provisions, by notice to the Company.  In the event of any termination of this
Agreement under this or any other provision of this Agreement, there shall be no
liability of any party to this Agreement to any other party, other than as
provided in Sections 5, 6 and 11 and other than as provided in Section 12 as to
the liability of defaulting Underwriters.

         This Agreement may be terminated after it becomes effective by the
Representatives by notice to the Company (a) if at or prior to the First Closing
Date or the Option Closing Date trading in securities on any of the New York
Stock Exchange, American Stock Exchange or the Nasdaq National Market shall have
been suspended or minimum or maximum prices shall have been established on any
such exchange or market, or a banking moratorium shall have been declared by New
York or United States authorities; (b) trading of any securities of the Company
shall have been suspended on any exchange or in any over-the-counter market; (c)
if at or prior to the First Closing Date or the Option Closing Date there shall
have been (i) an outbreak or escalation of hostilities between the United States
and any foreign power or of any other insurrection or armed conflict involving
the United States or (ii) any change in financial markets or any calamity or
crisis which, in the judgment of the Representatives, makes it impractical or
inadvisable to offer or sell the Firm Stock or Optional Stock, as applicable, on
the terms contemplated by the Prospectus; (d) if there shall

                                       24
<PAGE>
 
have been any development or prospective development involving particularly the
business or properties or securities of the Company or its subsidiaries or the
transactions contemplated by this Agreement, which, in the judgment of the
Representatives, makes it impracticable or inadvisable to offer or deliver the
Firm Stock or the Optional Stock, as applicable, on the terms contemplated by
the Prospectus; (e) if there shall be any litigation or proceeding, pending or
threatened, which, in the judgment of the Representatives, makes it
impracticable or inadvisable to offer or deliver the Firm Stock or Optional
Stock, as applicable, on the terms contemplated by the Prospectus; or (f) if
there shall have occurred any of the events specified in the immediately
preceding clauses (a) - (e) together with any other such event that makes it, in
the judgment of the Representatives, impractical or inadvisable to offer or
deliver the Firm Stock or Optional Stock, as applicable, on the terms
contemplated by the Prospectus.

         11.   Reimbursement of Underwriters.   Notwithstanding any other
               -----------------------------                             
provisions hereof, if this Agreement shall not become effective by reason of any
election of the Company pursuant to the first paragraph of Section 10 or shall
be terminated by the Representatives under Section 8 or Section 10, the Company
will bear and pay the expenses specified in Section 5 hereof and, in addition to
its obligations pursuant to Section 6 hereof, the Company will reimburse the
reasonable out-of-pocket expenses of the several Underwriters (including
reasonable fees and disbursements of counsel for the Underwriters) incurred in
connection with this Agreement and the proposed purchase of the Stock, and
promptly upon demand the Company will pay such amounts to you as
Representatives.

         12.   Substitution of Underwriters.  If any Underwriter or Underwriters
               ----------------------------                                     
shall default in its or their obligations to purchase shares of Stock hereunder
and the aggregate number of shares which such defaulting Underwriter or
Underwriters agreed but failed to purchase does not exceed ten percent (10%) of
the total number of shares underwritten, the other Underwriters shall be
obligated severally, in proportion to their respective commitments hereunder, to
purchase the shares which such defaulting Underwriter or Underwriters agreed but
failed to purchase.  If any Underwriter or Underwriters shall so default and the
aggregate number of shares with respect to which such default or defaults occur
is more than ten percent (10%) of the total number of shares underwritten and
arrangements satisfactory to the Representatives and the Company for the
purchase of such shares by other persons are not made within forty-eight (48)
hours after such default, this Agreement shall terminate.

         If the remaining Underwriters or substituted Underwriters are required
hereby or agree to take up all or part of the shares of Stock of a defaulting
Underwriter or Underwriters as provided in this Section 12, (a) the Company
shall have the right to postpone the Closing Dates for a period of not more than
five (5) full business days in order that the Company may effect whatever
changes may thereby be made necessary in the Registration Statement or the
Prospectus, or in any other documents or arrangements, and the Company agrees
promptly to file any amendments to the Registration Statement or supplements to
the Prospectus which may thereby be made necessary, and (b) the respective
numbers of shares to be purchased by the remaining Underwriters or substituted
Underwriters shall be taken as

                                       25
<PAGE>
 
the basis of their underwriting obligation for all purposes of this Agreement.
Nothing herein contained shall relieve any defaulting Underwriter of its
liability to the Company or the other Underwriters for damages occasioned by its
default hereunder.  Any termination of this Agreement pursuant to this Section
12 shall be without liability on the part of any non-defaulting Underwriter or
the Company, except for expenses to be paid or reimbursed pursuant to Section 5
and except for the provisions of Section 6.

         13.   Notices.  All communications hereunder shall be in writing and,
               -------                                                        
if sent to the Underwriters shall be mailed, delivered or telegraphed and
confirmed to you, as their Representatives, c/o Cowen & Company at Financial
Square, New York, New York 10005, except that notices given to an Underwriter
pursuant to Section 6 hereof shall be sent to such Underwriter at the address
furnished by the Representatives or, if sent to the Company, shall be mailed,
delivered or telegraphed and confirmed to Chief Financial Officer at 542 Amherst
Street, Nashua, New Hampshire 03063 with a copy to Mark L. Johnson at Foley,
Hoag & Eliot LLP at One Post Office Square, Boston, Massachusetts 02109-2170.

         14.   Successors.  This Agreement shall inure to the benefit of and be
               ----------                                                      
binding upon the several Underwriters, the Company and their respective
successors and legal representatives.  Nothing expressed or mentioned in this
Agreement is intended or shall be construed to give any person other than the
persons mentioned in the preceding sentence any legal or equitable right, remedy
or claim under or in respect of this Agreement, or any provisions herein
contained, this Agreement and all conditions and provisions hereof being
intended to be and being for the sole and exclusive benefit of such persons and
for the benefit of no other person; except that the representations, warranties,
covenants, agreements and indemnities of the Company contained in this Agreement
shall also be for the benefit of the person or persons, if any, who control any
Underwriter or Underwriters within the meaning of Section 15 of the Securities
Act or Section 20 of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), and the indemnities of the several Underwriters shall also be
for the benefit of each director of the Company, each of its officers who has
signed the Registration Statement and the person or persons, if any, who control
the Company within the meaning of Section 15 of the Securities Act or Section
20 of the Exchange Act.

         15.   Applicable Law.  This Agreement shall be governed by and
               --------------                                          
construed in accordance with the laws of the State of New York.

         16.   Authority of the Representatives.  In connection with this
               --------------------------------                          
Agreement, you will act for and on behalf of the several Underwriters, and any
action taken under this Agreement by Cowen, as Representative, will be binding
on all the Underwriters.

         17.   Partial Unenforceability.  The invalidity or unenforceability of
               ------------------------                                        
any Section, paragraph or provision of this Agreement shall not affect the
validity or enforceability of any other Section, paragraph or provision hereof.
If any Section paragraph or provision of this Agreement is for any reason
determined to be invalid or unenforceable,

                                       26
<PAGE>
 
there shall be deemed to be made such minor changes (and only such minor
changes) as are necessary to make it valid and enforceable.

         18.   General.  This Agreement constitutes the entire agreement of the
               -------                                                         
parties to this Agreement and supersedes all prior written or oral and all
contemporaneous oral agreements, understandings and negotiations with respect to
the subject matter hereof.  In this Agreement, the masculine, feminine and
neuter genders and the single and plural include one another.  The section
headings in this Agreement are for the convenience of the parties only and will
not affect the construction or interpretation of this Agreement.  This Agreement
may be amended or modified, and the observance of any term of this Agreement may
be waived, only by a writing signed by the Company and the Representatives.

         19.   Counterparts.  This Agreement may be signed in two (2) or more
               ------------                                                  
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

         If the foregoing correctly sets forth our understanding, please
indicate your acceptance thereof in the space provided below for that purpose,
whereupon this letter and your acceptance shall constitute a binding agreement
between us.

                                       27
<PAGE>
 
                                   Very truly yours,

                                   WHITE PINE SOFTWARE, INC.


                                   By:
                                       ----------------------------------------
                                       Name:
                                       Title:



Accepted and delivered in
New York, New York as of
the date first above written.

COWEN & COMPANY
OPPENHEIMER & CO., INC.
VOLPE, WELTY & COMPANY

Acting on their own behalf and as
Representatives of several Underwriters
referred to in the foregoing Agreement.

By: Cowen & Company

By: Cowen Incorporated,
    its general partner


By:
    ------------------------------
    Name:
    Title:

                                       28
<PAGE>
 
                                  SCHEDULE A

<TABLE>
<CAPTION>
                                                   Number      Number of
                                                   of Firm     Optional
                                                   Shares       Shares
                                                    to be        to be
Name                                              Purchased    Purchased
- ----                                              ---------    ---------
<S>                                               <C>          <C>
Cowen & Company...........................   
Oppenheimer & Co., Inc....................   
Volpe, Welty & Company....................   



                                                  ---------    ---------
Total.....................................   
                                                  =========    =========
</TABLE>

                                      29
<PAGE>
 
                                  SCHEDULE B


         Jean-Francois Abramatic
         Adtel L.P.
         ADVENTACT L.P.
         Advent International Investors II L.P.
         Advent Partners L.P.
         Adwest L.P.
         Howard R. Berke
         Michael Braca
         Arthur Bruno
         David O. Bundy
         Jerome Burke
         Reginald Bursens
         Killko A. Caballero
         Mallku Caballero
         C.A.T. (Attn: Denis Champenois)
         Pascal Crausaz
         Jack A. Dutzy
         CV Sofinnova Ventures Partners III
         Richard M. Darer
         Jean-Francois Ducarroz
         Michiel Fast
         Golden Gate Development and Investment L.P.
         H&Q London Ventures
         H&Q Taiwan Ventures C.V.
         H&Q TV Management N.V.
         H&Q Venture Partners
         H&Q Ventures IV
         H&Q Ventures International C.V.
         William Hambrecht
         Hambrecht & Quist
         Hambrecht & Quist Group
         Hambrecht 1980 Revocable Trust
         Hamquist
         Innolion
         J.F. Shea & Co., Inc.
         Carl A. Koppel
         Land Free Investment
         Brian L. Lichorowic
         Charles Lingel
         Forrest Milkowski
         Jonathan G. Morgan
         Phoenix Venture (BVI), Ltd.
         Michael O. Preletz
         Robert M. Putman
         Stephen Roche
         Sofinnova Capital FCPR
         Sofinnova S.A.
         Pierre-Gabriel Vallee

                                       30
<PAGE>
 

                                   EXHIBIT 1
                                   ---------


           FORM OF OPINION TO BE DELIVERED BY COUNSEL TO THE COMPANY
           --------------------------------------------------------- 

1.   The Company is a corporation validly existing and in corporate good
standing under the laws of the State of Delaware, with corporate power and
authority to own or lease its properties and conduct its business as described
in the Prospectus. The Company is duly qualified to do business as a foreign
corporation and is in corporate good standing in the Commonwealth of
Massachusetts and the State of California, New Hampshire and New Jersey. About
Software Corporation is a corporation validly existing and in corporate good
standing under the laws of the State of California.

2.   As of October 10, 1996, the authorized capital stock of the Company
consisted of (a) 15,000,000 shares of common stock, par value $.01 per share, of
which       shares were outstanding, and (b) 500,000 shares of common stock, par
value $5.83 per share, of which 394,511 shares were outstanding. Upon the filing
of the Amended and Restated Certificate of Incorporation of the Company to be
filed with the Secretary of State of the State of Delaware subsequent to the
time of delivery hereof, (a) the authorized capital stock of the Company will
consist of 30,000,000 shares of common stock, per value $.01 per share, and
5,000,000 shares of preferred stock, par value $.01 per share and (b) the
authorized capital stock of the Company will conform in all material respects to
the description thereof set forth in the Prospectus under the caption
"Description of Capital Stock." The outstanding shares of the capital stock of
the Company have been duly authorized and validly issued and are fully paid and
nonassessable.

3.   The Stock has been duly authorized and, when issued against payment of the 
agreed consideration therefor in accordance with the Underwriting Agreement, 
will be validly issued, fully paid and nonassessable, free and clear of any 
preemptive or similar rights, and will conform to the description thereof in the
Prospectus in all material respects. The certificates representing the Stock are
in proper form under the Delaware General Corporation Law, assuming conformance 
with the specimen certificate filed as an exhibit to the Registration Statement.

4.   To our knowledge, except as disclosed in or specifically contemplated by
the Prospectus, there are no outstanding options, warrants or other rights
calling for the issuance of any shares of capital stock of the Company or any
security convertible into or exchangeable for capital stock of the Company.

5.   The Registration Statement has become effective under the Securities Act.
The Prospectus has been filed with the Commission in the manner and time period
required under Rule 424(b) of the Rules and Registrations. To our knowledge, (a)
no stop order suspending the effectiveness of the Registration Statement or
suspending or preventing the use of the Prospectus has been issued and (b) no
proceedings for that purpose have been instituted or are pending before or by
the Commission.

6.   The Registration Statement and the Prospectus (except for the financial 
statements, the notes thereto and the related schedules and other financial, 
statistical and accounting data included in such documents, as to which we 
express no opinion) comply as to form in all material respects with the 
requirements of the Securities Act and with the Rules and Regulations.

7.   To our knowledge, the Company has not received notice of any claim or
challenge regarding its ownership of or its other rights to or under any
patents, trademarks, service marks, trade names, licenses, inventions or any
other rights described in the Prospectus, except as specified in such opinion
(such exceptions to be acceptable to the Representatives). To our knowledge (i)
no claim has


<PAGE>
 
been made against the Company alleging infringement by the Company of any 
patent, trademark, service mark, trade name, trade secret, license in or other 
intellectual property or franchise right of any person, (ii) no legal or 
governmental proceedings are pending relating to the foregoing, other than 
review of pending patent applications, and (iii) no such proceedings are 
currently threatened by governmental authorities or others, except as specified
in such opinion (such exceptions to be acceptable to the Representatives).

     8. The statements under the captions "Business--Government Regulation",
"Business--Proprietary Rights", "Management--Benefit Plans--Stock Option Plans",
"Management--Benefit Plans--Stock Purchase Plan", "Certain Transactions",
"Description of Capital Stock" and "Shares Eligible for Future Sale" in the
Prospectus, only to the extent that such statements constitute a summary of
documents referred to therein or matters or law, except for numerical data
contained in any such statements, are accurate summaries in all material
respects and fairly present the information called for by the Securities Act and
the Rules and Regulations with respect to such documents and matters. To our
knowledge, there are no laws, rules or regulations or legal or governmental
proceedings applicable to the business of the Company required to be described
in the Registration Statement or the Prospectus that are not so described.

     9. To our knowledge, there exists no franchise, lease, contract, agreement
or document which is required to be described in the Registration Statement or
Prospectus or to be filed as an exhibit to the Registration Statement which is
not described therein or filed as an exhibit thereto.

     10. To our knowledge, there are no legal or governmental proceedings
pending or threatened against the Company of a character required to be
disclosed in the Registration Statement or the Prospectus by the Securities Act
or the Rules and Regulations.

     11. The Company has the requisite corporate power and authority to enter
into the Underwriting Agreement and to perform its obligations thereunder,
including the issuance, sale and delivery of the Stock. The Underwriting
Agreement has been duly and validly authorized by all necessary corporate action
by the Company and has been duly and validly executed and delivered by and on
behalf of the Company.

     12. The execution and performance of the Underwriting Agreement by the
Company and the issuance and sale of the Stock therein contemplated will not
conflict with, result in a breach of or constitute a default under any material
provision of any material contract or instrument to which the Company is a party
or by which the Company is bound, or violate any of the provisions of the
certificate of incorporation or the by-laws of the Company (each as in effect
as of the Closing), or any law of the United States or the Commonwealth of
Massachusetts or the Delaware General Corporation Law, or any rule or regulation
of any governmental authority or regulatory body of the United States or the
Commonwealth of Massachusetts or any judgment, order or decree known to us and
applicable to the Company or any of its properties of any court, governmental
authority or arbitrator or will result in the creation of a lien.

                                       2
<PAGE>
 
     13.  To our knowledge, no holders of securities of the Company have rights
which have not been waived to require the registration under the Registration
Statement of shares of Common Stock or other securities of the Company.

     14.  No consent, approval, authorization or order of, and no notice to or 
filing with any court or governmental agency or body is required for the 
execution and delivery of the Underwriting Agreement by the Company or the issue
and sale of the Stock pursuant to the Underwriting Agreement, except such as 
have been obtained and are in full force and effect under the Securities Act and
except that we express no opinion with respect to qualification under, or
compliance with, any state securities or Blue Sky laws or the review of the
underwriting arrangements pursuant to the rules of the National Association of
Securities Dealers, Inc.

     15.  The Company is not, and upon consummation of the transactions 
contemplated by the Underwriting Agreement and application of the net proceeds 
of its sale of Stock as set forth under the caption "Use of Proceeds" in the 
Prospectus will not be, an "investment company" within the meaning of the 
Investment Company Act of 1940, as amended, and the rules and regulations
thereunder.

     Because the primary purpose of our professional engagement was not to 
establish or confirm factual matters or financial, accounting or statistical 
matters and because of the wholly or partially non-legal character of many of 
the statements contained in the Registration Statement and the Prospectus, we 
are not passing upon and do not assume any responsibility for the accuracy, 
completeness or fairness of the statements contained in the Registration 
Statement or the Prospectus (except to the extent expressly set forth in 
paragraphs (6) and (8) above) and we make no representation that we have 
independently verified the accuracy, completeness or fairness of such statements
(except as aforesaid).  Without limiting the foregoing, we assume no 
responsibility for, and have not independently verified, the accuracy, 
completeness and fairness of the financial statements or notes thereto or the 
other financial and statistical data included in the Registration Statement, and
we have not examined the accounting, financial or statistical records from which
such statements, notes and data are derived.  We note that, although certain 
portions of the Registration Statement (including financial statements) have 
been included therein on the authority of "experts" within the meaning of the 
Securities Act, we are not such experts with respect to any portion of the 
Registration Statement.

     However, in the course of our acting as counsel for the Company in 
connection with the preparation of the Registration Statement and the 
Prospectus, we participated in conferences and telephone conversations with your
representatives, representatives of the Company, representatives of Skadden, 
Arps, Slate, Meagher & Flom, counsel for the Underwriters, and representatives 
of Ernst & Young, independent accountants for the Company, during which 
conferences and conversations the contents of the Registration Statement and the
Prospectus and related matters were discussed.  In addition, we reviewed certain
corporate documents furnished to us by the Company or otherwise in our 
possession, including the exhibits filed with the Registration Statement and the
minutes of meetings of the stockholders and Board of Directors of the Company.

                                       3
<PAGE>

     Based on our participation in the above-mentioned conferences and
conversations, our review of the documents described above, our understanding of
applicable law and the experience we have gained in our practice thereunder, we
advise you that:

           (a) No information has come to our attention that causes us to
     believe that the Registration Statement (except for the financial
     statements, the notes thereto, and the related schedules and other
     financial, statistical and accounting data included or incorporated by
     reference therein, as to which we express no view), at the time it became
     effective, contained an untrue statement of a material fact or omitted to
     state a material fact required to be stated therein or necessary to make
     the statements therein not misleading.

           (b) No information has come to our attention that causes us to
     believe that the Prospectus (except for the financial statements, the notes
     thereto, and the related schedules and other financial, statistical and
     accounting data included or incorporated by reference therein, as to which
     we express no view), as of its date or the date hereof, contained or
     contains an untrue statement of a material fact or omitted or omits to
     state a material fact required to be stated therein or necessary to make
     the statements therein, in light of the circumstances under which they were
     made, not misleading.

                                       4

<PAGE>
 
                                                                 Exhibit 10.23
          
                             AMENDED AND RESTATED
                         REGISTRATION RIGHTS AGREEMENT


     This Agreement dated as of March 19, 1996 is entered into by and among
White Pine Software, Inc., a Delaware corporation (the "Company"), those persons
listed on Schedule 1 hereto (the "Investors"), and those persons listed on
          ----------                                                      
Schedule 2 hereto (the "Current Stockholders;" together with the Investors, the
- ----------                                                                     
"Stockholders").

     WHEREAS, the Investors are acquiring an aggregate of 343,053 shares of
common stock, $5.83 par value per share (the "$5.83 par Common Stock"), of the
Company pursuant to the terms of a Stock Purchase Agreement dated as of the date
hereof between the Company and the Investors (the "Purchase Agreement");

     WHEREAS, the shares of the Company's common stock , $.01 par value per
share (the "$.01 par Common Stock"), now owned by the Current Stockholders are
subject to that certain Registration Rights Agreement dated as of October 10,
1995 by and among the Company and certain Current Stockholders, that certain
Registration Rights Agreement dated as of March 8, 1994 by and among the Company
and certain Current Stockholders, and that certain Registration Rights Agreement
dated as of August 31, 1993 by and among the Company and certain Current
Stockholders (collectively, the "Prior Registration Rights Agreements");

     WHEREAS, each of the Prior Registration Rights Agreements may be amended by
the written consent of the parties thereto, and the requisite percentage of the
Stockholders who are parties to each of the Prior Registration Rights Agreements
have executed and delivered this Agreement;

     WHEREAS, the Investors have required, as a condition to the consummation of
the transactions contemplated by the Purchase Agreement, that the Company
provide for certain arrangements with respect to the registration of the shares
of $5.83 par Common Stock under the Securities Act of 1933, as amended, and the
Investors and the Current Stockholders wish to coordinate such arrangements with
the arrangements previously granted under the Prior Registration Rights
Agreements; and

     WHEREAS, the Investors have required as a condition under the Purchase
Agreement that this Agreement be executed by the parties hereto, and the parties
are willing to execute this Agreement and to be bound by the provisions hereof.

     NOW, THEREFORE, in consideration of the mutual promises and covenants
contained in this Agreement, and other valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereby agree that the
Prior Registration Rights Agreements are hereby amended and restated in their
entirety as follows:
<PAGE>
 
     1.   Certain Definitions.  As used in this Agreement, the following terms
          -------------------                                                 
shall have the following respective meanings:

     "$.01 par Common Stock" means the common stock, $.01 par value per share,
      ---------------------                                                   
of the Company.

     "$5.83 par Common Stock" means the common stock, $5.83 par value per share,
      ----------------------                                                    
of the Company.

     "Common Stock" means the $.01 par Common Stock and the $5.83 par Common
      ------------                                                          
Stock, collectively.

     "Commission" means the Securities and Exchange Commission, or any other
      ----------                                                            
Federal agency at the time administering the Securities Act.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended, or
      ------------                                                           
any similar Federal statute, and the rules and regulations of the Commission
issued under such Act, as they each may, from time to time, be in effect.

     "Registration Statement" means a registration statement filed by the
      ----------------------                                             
Company with the Commission for a public offering and sale of Common Stock
(other than a registration statement on Form S-8 or Form S-4, or their
successors, or any other form for a similar limited purpose, or any registration
statement covering only securities proposed to be issued in exchange for
securities or assets of another corporation).

     "Registration Expenses" means the expenses described in Section 5.
      ---------------------                                            

     "Registrable Shares" means (i) any shares of $5.83 par Common Stock and
      ------------------                                                    
$.01 par Common Stock, and any shares of Common Stock issued or issuable upon
the conversion or exercise of any other securities, now owned or hereafter
acquired by the Stockholders and (ii) any shares of Common Stock issued in
respect of such shares (because of stock splits, stock dividends,
reclassification, recapitalizations, or similar events); provided, however, that
shares of Common Stock which are Registrable Shares shall cease to be
Registrable Shares (i) upon any sale pursuant to a Registration Statement or
Rule 144 under the Securities Act or (ii) upon any sale in any manner to a
person or entity which, by virtue of Section 12 of this Agreement, is not
entitled to the rights provided by this Agreement. Wherever reference is made in
this Agreement to a request or consent of holders of a certain percentage of
Registrable Shares, the determination of such percentage shall include shares of
Common Stock issuable upon conversion of such shares even if such conversion has
not yet been effected.

     "Securities Act" means the Securities Act of 1933, as amended, or any
      --------------                                                      
similar Federal statute, and the rules and regulations of the Commission issued
under such Act, as they each may, from time to time, be in effect.

                                     - 2 -
<PAGE>
 
     2.   Demand Registrations.
          -------------------- 

          (a)  If, after six (6) months following an initial public offering of
equity securities of the Company, the Company shall receive a written request
(specifying that it is being made pursuant to this Section 2) from (i)
Stockholders owning in excess of 50% of the then outstanding shares of $5.83 par
Common Stock or (ii) Stockholders owning in excess of 50% of the then
outstanding $.01 par Common Stock requesting that the Company file a
registration statement under the Securities Act, or a similar document pursuant
to any other statute then in effect corresponding to the Securities Act,
covering the registration of Registrable Shares then owned by such Stockholder,
then the Company shall not later than seventy-five (75) days after receipt by
the Company of such a written request, file a registration statement with the
Commission relating to such Registrable Shares as to which such request for a
demand registration relates and the Company shall use its best efforts to cause
the offering of such Registrable Shares to be registered under the Securities
Act. No registration initiated hereunder shall count as a registration under
this Section 2 unless and until it shall have been declared effective by the
Commission.

          (b)  If the total amount of Registrable Shares that all Stockholders
request to be included in an offering made pursuant to this Section 2 exceeds
the amount of securities that the underwriters reasonably believe compatible
with the success of the offering, then the Company will include in such
registration only the number of securities which, in the good faith opinion of
such underwriters, can be sold, selected from the Registrable Shares requested
to be included by the Stockholders who requested the registration pursuant to
this Section 2 pro rata based on the number of Registrable Shares each of them
               --- ----
owns.

          (c)  The underwriter of any underwriting requested under this Section
2 shall be selected by a majority in interest of the Stockholders requesting
such registration and the Company.

     3.   Registration on Form S-3.  The Company shall use its best efforts to
          ------------------------                                            
qualify for registration on Form S-3 or any comparable or successor form; and to
that end the Company shall register (whether or not required by law to do so)
the Common Stock under the Exchange Act in accordance with the provisions of the
Exchange Act following the effective date of the first registration of any
securities of the Company on Form S-1 or any comparable or successor form.
After the Company has qualified for the use of Form S-3, in addition to the
rights contained in Section 2 hereof, the Investors shall have the right to
request an unlimited number of registrations on Form S-3 (such requests shall be
in writing and shall state the number of shares of Registrable Shares to be
disposed of and the intended methods of disposition of such shares by such
Stockholder or Stockholders), provided that in no event shall the Company be
required to register shares with an aggregate market value of less than
$1,000,000.

                                     - 3 -
<PAGE>
 
     4.   Registration Procedures.  If and whenever the Company is required by
          -----------------------                                             
the provisions of this Agreement to effect the registration of any of the
Registrable Shares under the Securities Act, the Company shall:

          (a)  file with the Commission a Registration Statement with respect to
such Registrable Shares and use its best efforts to cause that Registration
Statement to become and remain effective;

          (b)  as expeditiously as possible prepare and file with the Commission
any amendments and supplements to the Registration Statement and the prospectus
included in the Registration Statement as may be necessary to keep the
Registration Statement effective, in the case of a firm commitment underwritten
public offering, until each underwriter has completed the distribution of all
securities purchased by it and, in the case of any other offering, until the
earlier of the sale of all Registrable Shares covered thereby or 120 days after
the effective date thereof;

          (c)  enter into any underwriting agreement with a first-tier
underwriter reasonably necessary to effect the offer and sale of Common Stock,
provided such underwriting agreement contains customary underwriting provisions
and is entered into by the Stockholder or Stockholders selling Common Stock
pursuant to such Registration Statement and provided further that, if the
underwriter so requests, the underwriting agreement will contain customary
contribution provisions on the part of the Company;

          (d)  To the extent then permitted under applicable professional
guidelines and standards, obtain a comfort letter from the Company's independent
public accountants in customary form and covering such matters of the type
customarily covered by comfort letters and an opinion from the Company's counsel
in customary form and covering such matters of the type customarily covered in a
public issuance of securities, in each case addressed to the Stockholder, and
provide copies thereof to the Stockholders;

          (e)  as expeditiously as possible furnish to each selling Stockholder
such reasonable numbers of copies of the prospectus, including a preliminary
prospectus, in conformity with the requirements of the Securities Act, and such
other documents as the selling Stockholder may reasonably request in order to
facilitate the public sale or other disposition of the Registrable Shares owned
by the selling Stockholder; and

          (f)  as expeditiously as possible use its best efforts to register or
qualify the Registrable Shares covered by the Registration Statement under the
securities or Blue Sky laws of such states as the selling Stockholders shall
reasonably request, and do any and all other acts and things that may be
necessary or desirable to enable the selling Stockholders to consummate the
public sale or other disposition in such states of the Registrable Shares owned
by the selling Stockholder; provided, however, that the Company shall not be
required in connection with this paragraph (f) to qualify as a foreign
corporation or execute a general consent to service of process in any
jurisdiction;

                                     - 4 -
<PAGE>
 
     If the Company has delivered preliminary or final prospectuses to the
selling Stockholders and after having done so the prospectus is amended to
comply with the requirements of the Securities Act, the Company shall promptly
notify the selling Stockholders and, if requested, the selling Stockholders
shall immediately cease making offers of Registrable Shares and return all
prospectuses to the Company. The Company shall promptly provide the selling
Stockholders with revised prospectuses and, following receipt of the revised
prospectuses, the selling Stockholders shall be free to resume malting offers of
the Registrable Shares.

     5.   Expenses.  The Company will pay all reasonable, customary and 
          -------- 
necessary Registration Expenses of all registrations under this Agreement. For
purposes of this Section 5, the term "Registration Expenses" shall mean all
expenses incurred by the Company in complying with this Agreement, including,
without limitation, all reasonable, customary and necessary registration and
filing fees, exchange listing fees, printing expenses, fees and expenses of
counsel for the Company and the fees and expenses of one counsel jointly
selected by the Stockholders requesting registration to represent the selling
Stockholders, state Blue Sky fees and expenses, and the expense of any special
audits incident to or required by any such registration, but excluding
underwriting discounts, selling commissions and the fees and expenses of the
selling Stockholders' own counsel (other than the counsel selected to represent
all selling Stockholders).

     6.   Indemnification.
          --------------- 

          (a)  In the event of any registration of any of the Registrable Shares
under the Securities Act pursuant to this Agreement, the Company will indemnify
and hold harmless the seller of such Registrable Shares, and each other person,
if any, who controls such seller within the meaning of the Securities Act or the
Exchange Act against any losses, claims, damages or liabilities, joint or
several, to which such seller or controlling person may become subject under the
Securities Act, the Exchange Act, state securities or Blue Sky laws or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in any Registration Statement
under which such Registrable Shares were registered under the Securities Act,
any preliminary prospectus or final prospectus contained in the Registration
Statement, or any amendment or supplement to such Registration Statement, or
arise out of or are based upon the omission or alleged omission to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading; and the Company will reimburse such seller, and each
such controlling person for any legal or any other expenses reasonably incurred
by such seller or controlling person in connection with investigating or
defending any such loss, claim, damage, liability or action; provided, however,
                                                             --------  ------- 
that the Company will not be liable in any such case to the extent that any such
loss, claim, damage or liability arises out of or is based upon any untrue
statement or omission made in such Registration Statement, preliminary
prospectus or final prospectus, or any such amendment or supplement, in reliance
upon and in conformity with

                                     - 5 -
<PAGE>
 
information furnished to the Company, in writing, by or on behalf of such
seller, underwriter or controlling person specifically for use in the
preparation thereof.

          (b)  In the event of any registration of any of the Registrable Shares
under the Securities Act pursuant to this Agreement, each seller of Registrable
Shares, severally and not jointly, will indemnify and hold harmless the Company,
each of its directors and officers and each person, if any, who controls the
Company within the meaning of the Securities Act or the Exchange Act, against
any losses, claims, damages or liabilities, joint or several, to which the
Company, such directors and officers or controlling person may become subject
under the Securities Act, Exchange Act, state securities or Blue Sky laws or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of a material fact contained in any Registration Statement
under which such Registrable Shares were registered under the Securities Act,
any preliminary prospectus or final prospectus contained in the Registration
Statement, or any amendment or supplement to the Registration Statement, or
arise out of or are based upon any omission or alleged omission to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading, if the statement or omission was made in reliance upon
and in conformity with information relating to such seller furnished in writing
to the Company by or on behalf of such seller specifically for use in connection
with the preparation of such Registration Statement, prospectus, amendment or
supplement; provided, however, that the obligations of such Stockholder
            --------  -------                                          
hereunder shall be limited to an amount equal to the proceeds to each
Stockholder of Registrable Shares sold in connection with such registration.

          (c)  Each party entitled to indemnification under this Section 6 (the
"Indemnified Party") shall give notice to the party required to provide
indemnification (the "Indemnifying Party") promptly after such Indemnified Party
has actual knowledge of any claim as to which indemnity may be sought, and shall
permit the Indemnifying Party to assume the defense of any such claim or any
litigation resulting therefrom; provided, that counsel for the Indemnifying
Party, who shall conduct the defense of such claim or litigation, shall be
approved by the Indemnified Party (whose approval shall not be unreasonably
withheld); and, provided, further, that the failure of any Indemnified Party to
give notice as provided herein shall not relieve the Indemnifying Party of its
obligations under this Section 6. The Indemnified Party may participate in such
defense at such party's expense; provided, however, that the Indemnifying Party
shall pay such expense if representation of such Indemnified Party by the
counsel retained by the Indemnifying Party would be inappropriate due to actual
or potential differing interests between the Indemnified Party and any other
party represented by such counsel in such proceeding. No Indemnifying Party, in
the defense of any such claim or litigation shall, except with the consent of
each Indemnified Party, consent to entry of any judgment or enter into any
settlement which does not include as an unconditional term thereof the giving by
the claimant or plaintiff to such Indemnified Party of a release from all
liability in respect of such claim or litigation, and no Indemnified Party shall
consent to entry of any judgment or settle such claim or litigation without the
prior written consent of the Indemnifying Party.

                                     - 6 -
<PAGE>
 
          (d)  No Stockholder shall be required to participate in a registration
pursuant to which it would be required to execute an underwriting agreement in
connection with a registration effected under this Agreement which imposes
indemnification or contribution obligations on such Stockholder more onerous
than those imposed hereunder; provided, however, that the Company shall not be
deemed to breach the provisions of this Agreement if a Stockholder is not
permitted to participate in a registration on account of his refusal to execute
an underwriting agreement on the basis of this subsection (d).

     7.   Exception to Registration.  The Company shall not be required to 
          -------------------------                                 
effect a registration under this Agreement if (i) in the written opinion of
counsel for the Company such Stockholders may sell without registration under
the Securities Act all Registrable Shares for which they requested registration
under the provisions of the Securities Act and in the manner and in the quantity
in which the Registrable Shares were proposed to be sold, or (ii) the Company
shall have obtained from the Commission a "no-action" letter to that effect;
provided that this Section 7 shall not apply to sales made under Rule 144(k) or
any successor rule promulgated by the Commission until after the effective date
of the Company's initial registration of shares under the Securities Act.

     8.   Information by Holder.  Each Stockholder including Registrable Shares
          ---------------------                                                
in any registration shall furnish to the Company such information regarding such
Stockholder and the distribution proposed by such Stockholder as the Company may
reasonably request in writing and as shall be required in connection with any
registration, qualification or compliance referred to in this Agreement.

     9.   "Stand-Off" Agreement.  Each Stockholder, if requested by the Company
          ---------------------                                                
and the managing underwriter of an offering by the Company of Common Stock or
other securities of the Company pursuant to a Registration Statement, shall
agree not to sell publicly or otherwise transfer or dispose of any Registrable
Shares or other securities of the Company held by such Stockholder for a
specified period of time (not to exceed 180 days) following the effective date
of such Registration Statement; provided, that all Stockholders holding not less
than the number of shares of Common Stock held by the Stockholder (including
shares of Common Stock issuable upon the conversion of Registrable Shares, or
other convertible securities, or upon the exercise of options, warrants or
rights) and all officers and directors of the Company enter into similar
agreements.

     10.  Rule 144 Requirements.  After the earlier of (i) the closing of the
          ---------------------                                              
sale of securities of the Company pursuant to a Registration Statement, or (ii)
the registration by the Company of a class of securities under Section 12 of the
Exchange Act, the Company agrees:

          (a)  to comply with the requirements of Rule 144(c) under the
Securities Act with respect to current public information about the Company;

                                     - 7 -
<PAGE>
 
          (b)  to use its best efforts to file with the Commission in a timely
manner all reports and other documents required of the Company under the
Securities Act and the Exchange Act (at any time after it has become subject to
such reporting requirements); and

          (c)  to furnish to any holder of Registrable Shares upon request (i) a
written statement by the Company as to its compliance with the requirements of
said Rule 144(c), and the reporting requirements of the Securities Act and the
Exchange Act (at any time after it has become subject to such reporting
requirements), (ii) a copy of the most recent annual or quarterly report of the
Company, and (iii) such other reports and documents of the Company as such
holder may reasonably request to avail itself of any similar rule or regulation
of the Commission allowing it to sell any such securities without registration.

     11.  Mergers, Etc.  The Company shall not, directly or indirectly, enter
          -------------                                                      
into any merger, consolidation or reorganization in which the Company shall not
be the surviving corporation unless the proposed surviving corporation shall,
prior to such merger, consolidation or reorganization, agree in writing to
assume the obligations of the Company under this Agreement, and for that purpose
references hereunder to "Registrable Shares" shall be deemed to be references to
the securities which the Stockholders would be entitled to receive in exchange
for Registrable Shares under any such merger, consolidation or reorganization;
provided, however, that the provisions of this Section 11 shall not apply in the
event of any merger, consolidation or reorganization in which the Company is not
the surviving corporation if the Stockholders are entitled to receive in
exchange for their Registrable Shares consideration consisting solely of (i)
cash, (ii) securities of the acquiring corporation which may be immediately sold
to the public without registration under the Securities Act, or (iii) securities
of the acquiring corporation which the acquiring corporation has agreed to
register within 180 days of completion of the transaction for resale to the
public pursuant to the Securities Act.

     12.  Listing Application.  If shares of any class of stock of the Company
          -------------------                                                 
shall be listed on a national securities exchange, the Company shall, at its
expense, include in its listing application all of the shares of the listed
class then eligible for listing owned by any Stockholder.

     13.  Damages.  The Company recognizes and agrees that the holder of
          -------                                                       
Registrable Shares shall not have an adequate remedy if the Company fails to
comply with the provisions of this Agreement, and that damages will not be
readily ascertainable, and the Company expressly agrees that in the event of
such failure any Stockholder shall be entitled to seek specific performance of
the Company's obligations hereunder.

     14.  Termination.  All of the Company's obligations to register Registrable
          -----------                                                           
Shares under this Agreement shall terminate on the tenth anniversary of this
Agreement.

     15.  Transfers of Rights.  This Agreement, and the rights and obligations
          -------------------                                                 
of each Stockholder hereunder, may be assigned by such Stockholder to any person
or entity

                                     - 8 -
<PAGE>
 
acquiring at least 25% of the Registrable Shares owned by such Stockholder
(subject to adjustment for stock splits, stock dividends, recapitalizations or
similar events), and such transferee shall be deemed a "Stockholder" for
purposes of this Agreement; provided that the transferee provides written notice
of such assignment to the Company.

     16.  General.
          ------- 

          (a)  Notices.  All notices, requests, consents, and other 
               -------   
communications under this Agreement shall be in writing and shall be delivered
by hand or mailed by first class certified or registered mail, return receipt
requested, postage prepaid:

     If to the Company, at 40 Simon Street, Suite 201, Nashua, NH 03060-3043,
Attention: President, or at such other address or addresses as may have been
furnished in writing by the Company to the Stockholders; or

     If to a Stockholder, at such address or addresses as may have been
furnished to the Company in writing by such Stockholder.

     Notices provided in accordance with this Section 16(a) shall be deemed
delivered upon personal delivery or two (2) business days after deposit in the
mail.

          (b)  Entire Agreement.  This Agreement embodies the entire agreement
               ----------------        
and understanding between the parties hereto with respect to the subject matter
hereof and supersedes all prior agreements and understandings relating to such
subject matter, including without limitation the rights and obligations of the
Current Stockholders under the Prior Registration Rights Agreements and each
Current Stockholder hereby waives all of its rights under the Prior Registration
Rights Agreements and hereby cancels the Prior Registration Rights Agreements.

          (c)  Amendments and Waivers.  Neither this Agreement nor any provision
               ----------------------                                           
hereof may be waived, modified, amended or terminated except by a written
agreement signed by the parties hereto; provided, however, that Stockholders
                                        --------  -------                   
owning at least 66 2/3% of the Registrable Shares owned by all Stockholders may
effect any such waiver, modification, amendment or termination on behalf of all
of the Stockholders; provided, further, that, without the consent of all parties
                     --------  -------                                          
to this Agreement who own Registrable Shares, no amendment or addition to this
Agreement may be made which (i) modifies this Section 16(c) or (ii) would affect
the holders of Registrable Shares in a disproportionate manner; and provided,
further, that no amendment or addition to this Agreement which affects any
Stockholder's rights under Section 2 or 3 hereof may be made without the consent
of such Stockholder. For purposes hereof, the term "disproportionate manner"
shall refer to any event which would impair the rights of one Stockholder while
not impairing similar rights held by another Stockholder. No waiver of any
breach or default hereunder shall be considered valid unless in writing, and no
such waiver shall be deemed a waiver of any subsequent breach or default of the
same or similar nature.

                                     - 9 -
<PAGE>
 
          (d)  Counterparts.  This Agreement may be executed in one or more
               ------------                                                
counterparts, each of which shall be deemed to be an original, but all of which
shall be one and the same document.

          (e)  Severability.  The invalidity or unenforceability of any 
               ------------ 
provision of this Agreement shall not affect the validity or enforceability of
any other provision of this Agreement.

          (f)  Governing Law.  This Agreement shall be governed by and construed
               ------------- 
in accordance with the laws of the State of New Hampshire.


                 [Remainder of Page Intentionally Left Blank]

                                     - 10 -
<PAGE>
 
     IN WITNESS WHEREOF, this Agreement has been duly executed by the parties
hereto as of the date first written above.

                                   COMPANY:
 
WITNESS                            WHITE PINE SOFTWARE, INC.

 

/s/ Robert Putnam                  /s/ Howard R. Berke
___________________________        --------------------------------------------
                                   Howard R. Berke, President

                                   INVESTORS:

                                   ADWEST LIMITED PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

                                   ADTEL LIMITED PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

                                   ADVENTACT LIMITED PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

                                   GOLDEN GATE DEVELOPMENT AND LIMITED 
                                   PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

                                     - 11 -
<PAGE>
 
                                   ADVENT INTERNATIONAL INVESTORS LIMITED
                                   PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

                                   ADVENT PARTNERS LIMITED PARTNERSHIP
                                   By: Advent International Limited Partnership,
                                       its general partner
                                   By:                    **
                                      ------------------------------------------

** By: Advent International 
       Corporation, its general partner

   By:/s/ Patrick J. Sansonetti
      ______________________________________
      Patrick J. Sansonetti
      Senior Vice President, General Partner

                                     - 12 -
<PAGE>
 
                                        CURRENT STOCKHOLDERS:

                                         /s/ Charles Lingel
- ------------------------                -------------------------------------
Witness                                  Charles Lingel

                                        /s/ Howard R. Berke
- ------------------------                -------------------------------------
Witness                                  Howard R. Berke

                                        /s/ Forrest Milkowski
- ------------------------                -------------------------------------
Witness                                  Forrest Milkowski       

                                        /s/ Stephen Roche
- ------------------------                -------------------------------------
Witness                                  Stephen Roche

                                        /s/ Arthur Bruno
- ------------------------                -------------------------------------
Witness                                  Arthur Bruno

                                        J.F. Shea & Co., Inc.

                                        By: /s/ illegible
- ------------------------                    --------------------------------- 
Witness
                                        Innolion

                                        By: /s/ P.G. Vallee
- ------------------------                    --------------------------------- 
Witness                                 
                                        Land Free Investment

                                        By: /s/ illegible
- ------------------------                    ---------------------------------   
Witness






Signature Page Amended and Restated
Registration Rights Agreement
<PAGE>
 

                                       H & Q London Ventures

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness                                   

                                       H & Q Tiawan Ventures, C.V.
                              
                                       By:/s/ William Hambrecht
- -----------------------------             --------------------------------------
Witness                       

                                       H & Q Ventures International C.V.

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness                       
                                        
                                       H & Q Ventures IV

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness         

                                       Hambrecht & Quist

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness

                                       The Hambrecht 1980 Revocable Trust

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness

                                       Hamco Capital Corporation

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness

                                       Hamquist
                
                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness

                                       /s/ William Hambrecht
- -----------------------------          ----------------------------------------
Witness                                William Hambrecht

                                       Phoenix Venture (BVI) Ltd.

                                       By:/s/ William Hambrecht
- -----------------------------             -------------------------------------
Witness

                                       /s/ Michael Preletz
- -----------------------------          -----------------------------------------
Witness                                 Michael Preletz


<PAGE>
 
                                        SOFINNOVA S.A.       

                                        By:  /s/ illegible
- ------------------------                    ---------------------------------
Witness                                  ________________________ its duly   
                                          authorized _______________________  

                                        SOFINNOVA CAPITAL FCPR                
                                                                              
                                        By:  /s/ illegible
- ------------------------                    --------------------------------- 
Witness                                  ________________________ its duly    
                                          authorized _______________________   

                                        CV SOFINNOVA VENTURES PARTNERS II     
                                                   
                                        By:  /s/ illegible
- ------------------------                   --------------------------------- 
Witness                                 ________________________ its duly    
                                          authorized _______________________   

                                        /s/ Killko Caballero 
- ------------------------                -------------------------------------
Witness                                  Killko Caballero 

                                        /s/ Reginald Bursens                  
- ------------------------                ------------------------------------- 
Witness                                  Reginald Bursens                     

                                        /s/ Michiel Fast                      
- ------------------------                ------------------------------------- 
Witness                                  Michiel Fast
                                                                              
                                        /s/ Jean-Francois Ducarroz
- ------------------------                ------------------------------------- 
Witness                                  Jean-Francois Ducarroz
                                        
                                        /s/ Mallku Caballero
- ------------------------                ------------------------------------- 
Witness                                  Mallku Caballero

                                        /s/ Pascal Crausaz
- ------------------------                ------------------------------------- 
Witness                                 Pascal Crausaz

                                        /s/ Pierre Saslawsky
- ------------------------                ------------------------------------- 
Witness                                  Pierre Saslawsky




Signature Page Amended and Restated
Registration Rights Agreement

<PAGE>
 
                                  SCHEDULE 1

                                   INVESTORS
                                   ---------


Adwest Limited Partnership
Adtel Limited Partnership
ADVENTACT Limited Partnership
Golden Gate Development Investment Fund
Advent International Investors II Limited Partnership
Advent Partners Limited Partnership
c/o Advent International Corporation
101 Federal Street
Boston, MA 02110
Attention: Patrick J. Sansonetti

                                     - 16 -
<PAGE>
 
                                  SCHEDULE 2

                             CURRENT STOCKHOLDERS
                             --------------------


Charles Lingel
Howard R. Berke
Forrest Milkowski
Stephen Roche
Arthur Bruno
J.F. Shea & Co., Inc.
Innolion
Land Free Investment
Sofinnova S.A.
Sofinnova Capital FCPR
CV Sofinnova Ventures Partners III
Killko Caballero
Reginald Bursens
Michiel Fast
Jean-Francois Ducarroz
Mallku Caballero
Pascal Crausaz
Pierre Saslawsky
H & Q London Ventures
H & Q Taiwan Ventures, C.V.
H & Q Ventures International C.V.
H & Q Ventures IV
Hambrecht & Quist
The Hambrecht 1980 Revocable Trust
Hamco Capital Corporation
Hamquist
William Hambrecht
Phoenix Venture (BVI) Ltd.
Michael Preletz
 

                                     - 17 -
<PAGE>
 



                                FIRST AMENDMENT
                                      TO
              AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

   This First Amendment dated as of July 22, 1996 (this "Amendment") amends the
Amended and Restated Registration Rights Agreement dated as of March 19, 1996
(the "Agreement") by and among White Pine Software, Inc., a Delaware corporation
(the "Company"), the persons listed on Schedule 1 thereto (the "Investors"), and
                                       ----------                               
the persons listed on Schedule 2 thereto (the "Current Stockholders" and,
                      ----------                                         
together with the Investors, the "Stockholders").

   In consideration of the mutual promises and covenants contained in this
Amendment and other valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the parties agree that the Agreement is hereby amended
as follows:

   1. The following paragraph is inserted in Section 1 after the definition of
"Common Stock":

      "`Converted Common Stock' means (i) the shares of $.01 par Common Stock
        ----------------------                                               
   issued or issuable upon conversion of shares of $5.83 par Common Stock and
   (ii) any additional shares of $.01 par Common Stock issued in respect of such
   shares (because of stock splits, stock dividends, reclassification,
   recapitalizations, or similar events)."

   2. The following paragraph is inserted in Section 1 after the definition of
"Registration Expenses":

      "`Registrable Converted Shares' means Registrable Shares consisting of
       ----------------------------                                        
   shares of Converted Common Stock."

   3. The definition of "Registrable Shares" in Section 1 is hereby deleted and
replaced with the following:

      "`Registrable Shares' means (i) any shares of $.01 par Common Stock
        ------------------                                               
   (including shares of Converted Common Stock), and any additional shares of
   $.01 par Common Stock issuable upon the conversion or exercise of any other
   securities, owned by the Stockholders as of the date of the final prospectus
   for the initial public offering of equity securities of the Company and (ii)
   any shares of $.01 par Common Stock issued in respect of such shares or
   additional shares (because of stock splits, stock dividends,
   reclassification, recapitalizations, or similar events); provided, however,
                                                            --------  ------- 
   that shares of $.01 par Common Stock that are Registrable Shares shall cease
   to be Registrable Shares (a) upon any sale pursuant to any registration
   statement filed by the Company with the Commission or pursuant to Rule 144 or
   Rule 701 under the Securities Act or (b) upon any sale in any manner to a
   person or entity which, by virtue of Section 15 of this Agreement, is not
   entitled to the rights provided by this Agreement.  Wherever reference is
   made in this Agreement to a request or consent of holders of a certain
   percentage of Registrable Shares, the determination of such percentage shall
   include Registrable Shares consisting of shares of $.01 par Common Stock
   issuable upon conversion or exercise of securities, even if such conversion
   or exercise has not yet been effected."


<PAGE>
 
   4. Section 2 is hereby deleted and replaced with the following:

      "2.  Demand Registrations.
           -------------------- 

           "(a)  If, after 120 days following the date of the final prospectus
   for an initial public offering of equity securities of the Company, the
   Company shall receive a written request (specifying that it is being made
   pursuant to this Section 2(a)) from Stockholders owning in excess of 50% of
   the then-outstanding Registrable Converted Shares requesting that the Company
   file a registration statement under the Securities Act, or a similar document
   pursuant to any other statute then in effect corresponding to the Securities
   Act, covering the registration of Registrable Converted Shares then owned by
   such Stockholders, then the Company shall, not later than 75 days after
   receipt by the Company of such a written request, file a registration
   statement with the Commission for the Registrable Converted Shares as to
   which such request relates and the Company shall use its best efforts to
   cause the offering of such Registrable Converted Shares to be registered
   under the Securities Act; provided, however, that (i) the effective date of
   such Registration Statement shall not occur prior to the one hundred eighty-
   first day after the date of the final prospectus for the initial public
   offering of equity securities of the Company, (ii) the aggregate market value
   of the Registrable Converted Shares registered pursuant to this Section 2(a)
   shall not exceed $2,300,000 and (iii) the Company shall not be required to
   effect more than one demand registration pursuant to this Section 2(a). For
   purposes of this Agreement, the `market value' of a Registrable Converted
   Share as of a specified date shall be the average of the closing prices per
   share of $.01 par Common Stock on the Nasdaq National Market or any national
   securities exchange during the ten trading days preceding such date. If the
   market value of Registrable Converted Shares that Stockholders request to be
   included in an offering made pursuant to this Section 2(a) exceeds
   $2,300,000, then the Company will include in such registration only
   Registrable Converted Shares the market value of which shall not exceed
   $2,300,000, selected from the Registrable Converted Shares requested to be
   included in such registration pro rata based on the number of Registrable
                                 --- ----
   Converted Shares each of them then owns. No registration initiated hereunder
   shall count as a registration under this Section 2(a) unless and until it
   shall have been declared effective by the Commission.

           "(b)  If, after 180 days following the date of the final prospectus
   for an initial public offering of equity securities of the Company, the
   Company shall receive a written request (specifying that it is being made
   pursuant to this Section 2(b)) from Stockholders owning in excess of 50% of
   the then-outstanding Registrable Shares held by the Stockholders requesting
   that the Company file a registration statement under the Securities Act, or a
   similar document pursuant to any other statute then in effect corresponding
   to the Securities Act, covering the registration of Registrable Shares then
   owned by such Stockholders, then the Company shall, not later than 75 days
   after receipt by the Company of such written request, file a registration
   statement with the Commission for the Registrable Shares as to which such
   request relates and the Company shall use its best efforts to cause the
   offering of such Registrable Shares to be registered under the Securities
   Act; provided, however, that the Company shall not be required to effect
        --------  -------
   more than one registration pursuant to this Section 2(b). No registration
   initiated hereunder shall count as a registration under this Section 2(b)
   unless and until it shall have been declared effective by the Commission.

           "(c)  If the total amount of Registrable Shares that all Stockholders
   request to be included in an offering made pursuant to this Section 2 exceeds
   the amount of securities that the underwriters reasonably believe compatible
   with the success of such offering, then the

<PAGE>
 
   Company will include in such registration only the number of Registrable
   Shares which, in the good faith opinion of such underwriters, can be sold,
   selected from the Registrable Shares requested to be included in such
   registration as follows:

           "(i)  in the case of a registration initiated pursuant to a written
      request under Section 2(a), (A) all of the Registrable Converted Shares
      that have been requested to be included in such registration by the
      Stockholders at whose request the registration is made, provided that if
                                                              --------        
      such Registrable Converted Shares exceed the limitation described in
      Section 2(a)(ii), then, in order to comply with such limitation, the
      number of such Registrable Converted Shares to be registered shall be
      decreased pro rata based on the number of Registrable Converted Shares
                --- ----                                                    
      each of the Stockholders then owns and (B) to the extent the Registrable
      Converted Shares that have been requested to be included in such
      registration by the Stockholders at whose request the registration is made
      are less than such limitation, then (and only then) Registrable Shares of
      other Stockholders shall be included, pro rata based on the number of
                                            --- ----                       
      Registrable Shares each of them then owns; and

           "(ii)  in the case of a registration initiated pursuant to a written
      request under Section 2(b), (A) the Registrable Shares requested to be
      included by the Stockholders at whose request the registration is made,
      pro rata based on the number of Registrable Shares each of them owns and
      --- ----                                                                
      (B) then (and only then) the remaining Registrable Shares, pro rata based
                                                                 --- ----      
      on the number of Registrable Shares each of the Stockholders then owns.

           "(d)  The underwriter of any underwriting requested under Section
   2(a) or Section 2(b), as the case may be, shall be selected by a majority in
   interest of the Stockholders requesting such registration and the Company."

   5. The reference to "Common Stock" in Section 3 is deleted and replaced with
"$.01 par Common Stock" and the following phrase is inserted before the period
at the end of Section 3:

   ", determined in accordance with the definition of `market value' in Section
   2(a)".

   6. Schedule 1 is hereby amended to include "J.F. Shea Co., Inc."

   7. Except as amended by this Amendment, the Agreement shall remain in effect
in accordance with its terms.


<PAGE>
 
   IN WITNESS WHEREOF, this Amendment has been duly executed by the parties
hereto as of the date first written above.

                                       COMPANY:
                                  
                                       WHITE PINE SOFTWARE, INC.
                                  
                                  
                                       By: /s/ Howard R. Berke
                                           ________________________________
                                           President
                                  
                                       INVESTORS:
                                  
                                       ADWEST LIMITED PARTNERSHIP
                                       ADVENTACT LIMITED PARTNERSHIP
                                       ADTEL LIMITED PARTNERSHIP
                                       GOLDEN GATE DEVELOPMENT AND
                                        INVESTMENT FUND
                                          By: Advent International Limited
                                                Partnership, General Partner
                                          By: Advent International Corporation,
                                                General Partner
                                          By: Janet L. Hennessy, Vice President
                                  
                                       ADVENT INTERNATIONAL INVESTORS
                                        LIMITED PARTNERSHIP II
                                       ADVENT PARTNERS LIMITED PARTNERSHIP
                                          By: Advent International Corporation,
                                                General Partner
                                          By: Janet L. Hennessy, Vice President
                                  
                                       /s/ Janet L. Hennessy
                                       ____________________________________
                                       Janet L. Hennessy*
                                       Vice President, Controller
                                       *For all of the above
                                  
                                       J.F. SHEA CO., INC.
                                  
                                  
                                       By:/s/ James H. Shorten
                                          ________________________________

<PAGE>
 
                                       CURRENT STOCKHOLDERS:
                                    
                                       /s/ Charles Lingel
                                       ____________________________________
                                       Charles Lingel
                                    
                                       /s/ Howard R. Berke
                                       ____________________________________
                                       Howard R. Berke
                                       
                                       /s/ Forrest Milkowski
                                       ____________________________________
                                       Forrest Milkowski
                                       
                                       /s/ Stephen Roche
                                       ____________________________________
                                       Stephen Roche
                                       
                                       /s/ Arthur Bruno
                                       ____________________________________
                                       Arthur Bruno
                                       
                                       
                                       J.F. SHEA CO., INC.
                                       
                                       
                                       By: /s/ James H. Shorten
                                          ________________________________
                                           
                                    
                                       INNOLION
                                    
                                    
                                       By: /s/ P.G. Vallee
                                          ________________________________
                                       
                                       
                                       LAND FREE INVESTMENT
                                       
                                       
                                       By: /s/ illegible
                                           ________________________________
                                    
                                       /s/ Michael Preletz, Trustee
                                       ____________________________________ 
                                       Michael Preletz
                                    
                                       SOFINNOVA S.A.
                                    
                                    
                                       By:/s/ Olivier Protard 
                                          _______________________, its duly
                                                    
                                       authorized  Officer
                                                   ________________________   


<PAGE>
 
                                       SOFINNOVA CAPITAL FCPR
                                
                                
                                       By:/s/ Olivier Protard
                                       _______________________________, its duly
                                       
                                       authorized  Officer
                                                  ______________________________
                                      
                                       CV SOFINNOVA VENTURES PARTNERS II
                                
                                
                                       By:/s/ Olivier Protard
                                          ___________________________, its duly

                                       authorized  Attorney
                                                  _____________________________
                                
                                       /s/ Killko Caballero
                                       _________________________________________
                                       Killko Caballero
                                
                                
                                       /s/ Reginald Bursens
                                       _________________________________________
                                       Reginald Bursens
                                
                                
                                       /s/ Michiel Fast
                                       _________________________________________
                                       Michiel Fast
                                
                                
                                       /s/ Jean-Francois Ducarroz
                                       _________________________________________
                                       Jean-Francois Ducarroz
                                
                                
                                       /s/ Mallku Caballero
                                       _________________________________________
                                       Mallku Caballero
                                
                                       /s/ Pascal Crausaz
                                       _________________________________________
                                       Pascal Crausaz
                                
                                       
                                       _________________________________________
                                       Pierre Saslawsky

<PAGE>
 
                                       H & Q LONDON VENTURES
                                
                                
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                     
                                
                                       H & Q TV MANAGEMENT N.V.
                                     
                                
                                       By: /s/ illegible
                                           _____________________________________
                                          
                                          
                                       H & Q VENTURES INTERNATIONAL C.V.
                                
                                          
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                
                                       H & Q VENTURES IV
                                          
                                          
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                
                                          
                                       HAMBRECHT & QUIST
                                
                                
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                          
                                
                                       THE HAMBRECHT 1980 REVOCABLE TRUST
                                          
                                          
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                
                                          
                                       H & Q VENTURE PARTNERS
                                
                                
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                          
                                
                                       HAMQUIST
                                
                                
                                       By: /s/ Jackie Berterretche
                                           _____________________________________
                                
                                
                                       /s/ William Hambrecht
                                       _________________________________________
                                       William Hambrecht

<PAGE>
 
                                       PHOENIX VENTURE (BVI) LTD.


                                       By:/s/ Jackie Berterretche
                                          _____________________________________


                                       HAMBRECHT & QUIST GROUP


                                       By:/s/ Jackie Berterretche
                                           _____________________________________



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