INTERLEAF INC /MA/
S-3, 1997-11-26
PREPACKAGED SOFTWARE
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<PAGE>

                                       DRAFT 1
   As filed with the Securities and Exchange Commission on November  26, 1997
                                    Registration Statement No. 333-
- ------------------------------------------------------------------------------- 
 
                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549
                                ______________________
                                           
                                           
                                       FORM S-3
                                ______________________
                                           
                                           
               REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                ______________________
                                           
                                           
                                   INTERLEAF, INC.
                (Exact name of registrant as specified in its charter)
                                ______________________
                                           
       MASSACHUSETTS                                  04-2729042
(State or other jurisdiction                (I.R.S. Employer Identification No.)
of incorporation or organization)

                                   62 Fourth Avenue
                             Waltham, Massachusetts 02154
                                    (781) 290-0710
                          (Address, including zip code, and 
                       telephone number, including area code, 
                              of registrant's principal 
                                  executive offices)
                                ______________________
                                           
                                           
                                 CRAIG NEWFIELD, ESQ.
                                   General Counsel
                                   INTERLEAF, INC.
                                   62 Fourth Avenue
                             Waltham, Massachusetts 02154
                                    (781) 290-0710
                       (Name, address, including zip code, and 
                       telephone number, including area code, 
                                of agent for service)
                                           




Approximate date of commencement of proposed sale to public:  From time to
time after this Registration Statement becomes effective.

If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the
following box.  |__|

If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act
of 1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box.  |X|

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 registrations statement number of
the earlier effective registration statement for the same offering.  |__|

If this Form is a post-effective amendment filed pursuant to Rule 462(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.  |__|

If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box.  |__|


                                        
                         CALCULATION OF REGISTRATION FEE
- -----------------------------------------------------------------------------
                                  Proposed    Proposed
Title of Each                      Maximum     Maximum
Class of                           Offering    Aggregate    Amount of
Securities to      Amount to be   Price Per    Offering     Registration
be Registered      Registered      Share (1)   Price (1)    Fee
- -----------------------------------------------------------------------------

Common Stock,      5,592,000       $3.5315    $19,748,148    $6,000
  $.01 par value   shares
- -----------------------------------------------------------------------------

(1)  Estimated solely for purposes of calculating the registration fee
     pursuant to Rule 457(c) and based upon the greater of $1.50 (the 
     lowest possible conversion price) and trading prices on the Nasdaq 
     National Market on November 25, 1997.


    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), shall determine.

- ------------------------------------------------------------------------------
<PAGE>
                                   5,592,000 Shares
                                           
                                           
                                   INTERLEAF, INC.
                                           
                                           
                                     Common Stock
                                _____________________

    This Prospectus covers the resale of up to 5,592,000 shares of Common 
Stock, $0.01 par value per share (the "Common Stock") of Interleaf, Inc. 
("Interleaf" or the "Company") by certain shareholders of the Company (the 
"Selling Shareholders").  See "Selling Shareholders." 5,032,800 of the shares 
of Common Stock covered by this Prospectus may be issuable to the Selling 
Shareholders upon conversion of the Series 6% Convertible Preferred Stock, 
$.01 par value per share ("6% Convertible Preferred Stock"), of the Company 
which was issued to the Selling Shareholders pursuant to the several 
Preferred Stock Investment Agreements between the Company and the Selling 
Shareholders, each dated as of September 30, 1997 (collectively, the 
"Investment Agreement"). The remaining 559,200 shares of Common Stock may be 
issuable to Selling Shareholders who received certain warrants to acquire 6% 
Convertible Preferred Stock in connection with the services of Cappello 
Capital Corporation as placement agent.  All of the shares offered hereunder 
are to be sold by the Selling Shareholders. The Company will not receive any 
of the proceeds from the sale of the shares by the Selling Shareholders.  

    The shares covered by this Prospectus represent the maximum number of
shares that may be issued prior to September 30, 1998 based upon a conversion
price of $1.50 per share, which is the minimum conversion price during the
period under the terms of the Investment Agreement.  The actual number of
shares of Stock offered hereby is subject to adjustment and could be
materially less or more than the estimated amount indicated depending upon
factors which cannot be predicted by the Company at this time, including, among
others, market prices prevailing at the actual date of conversion and whether 
dividends on shares of 6% Convertible Preferred Stock are paid in cash or in 
additional shares of 6% Convertible Preferred Stock.  This presentation is not 
intended to constitute a prediction as to the future market price of the 
Common Stock or as to when Selling Shareholders will elect to convert shares 
of 6% Convertible Preferred Stock and the 6% Convertible Preferred Stock 
Warrants issued in the 1997 Private Placement.

    The Selling Shareholders may from time to time sell the shares covered by
this Prospectus on the Nasdaq National Market in ordinary brokerage
transactions, in negotiated transactions, or otherwise, at market prices
prevailing at the time of sale or at negotiated prices.  See "Plan of
Distribution." The Common Stock is traded on the Nasdaq National Market under
the symbol "LEAF".  

                                ______________________
                                           
                                           
            THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
              SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
             COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR
               ANY STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY
                OR ADEQUACY OF THIS PROSPECTUS.  ANY REPRESENTATION TO
                         THE CONTRARY IS A CRIMINAL OFFENSE.
                                _____________________
                                           
                                           
                  The date of this Prospectus is December __, 1997.

<PAGE>

                                AVAILABLE INFORMATION


    The Company is subject to the informational requirements of the 
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in 
accordance therewith files reports and other information with the Securities 
and Exchange Commission (the "Commission").  Reports, proxy statements and 
other information filed by the Company with the Commission pursuant to the 
informational requirements of the Exchange Act may be inspected and copied at 
the public reference facilities maintained by the Commission at 450 Fifth 
Street, N.W., Washington, D.C. 20549 and at the Commission's regional offices 
located at 7 World Trade Center, Suite 1300, New York, New York 10048, and at 
Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 
60661.  Copies of such materials also may be obtained from the Public 
Reference Section of the Commission at 450 Fifth Street, N.W., Washington, 
D.C. 20549 at prescribed rates.  The Common Stock is traded on the Nasdaq 
National Market. Reports and other information concerning the Company may be 
inspected at the National Association of Securities Dealers, Inc., 1735 K 
Street, N.W., Washington, D.C. 20006.

    The Company has filed with the Commission a Registration Statement on Form
S-3 under the Securities Act of 1933, as amended (the "Securities Act"), with
respect to the shares of Common Stock offered hereby.  This Prospectus does not
contain all the information set forth in the Registration Statement and the
exhibits and schedules thereto, as certain items are omitted in accordance with
the rules and regulations of the Commission.  For further information pertaining
to the Company and the shares of Common Stock offered hereby, reference is made
to such Registration Statement and the exhibits and schedules thereto, which may
be inspected without charge at the office of the Commission at 450 Fifth Street,
N.W., Washington, D.C. 20549, and copies of which may be obtained from the
Commission at prescribed rates.


                   INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
                                           

    The following documents filed by the Company with the Commission are
incorporated herein by reference:


    (1)  The Company's Annual Report on Form 10-K for the fiscal year ended 
March 31, 1997, Quarterly Report on Form 10-Q for the quarter ended June 30, 
1997, Current Report on Form 8-K filed on October 1, 1997, Current Report 
Form 8-K/A Amendment No. 1 filed on October 23, 1997, Quarterly Report on 
Form 10-Q for the quarter ended September 30, 1997, and the Company's Proxy 
Statement filed on November 17, 1997.

    (2)  The Company's Registration Statement on Form 8-A dated June 11, 1986
registering Common Stock under Section 12(g) of the Exchange Act.


    All documents filed by the Company with the Commission pursuant to Sections
13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date hereof and
prior to the termination of the offering of the Common Stock registered hereby
shall be deemed to be incorporated by reference into this Prospectus and to be a
part hereof from the date of filing such documents.  Any statement contained in
a document incorporated or deemed to be incorporated by reference herein shall
be deemed to be modified or superseded for purposes of this Prospectus to the
extent that a statement contained herein or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement.  Any statement so modified or superseded
shall not be deemed, except as so modified or superseded, to constitute a part
of this Prospectus.

    The Company will provide without charge to each person to whom this
Prospectus is delivered, upon written or oral request of such person, a copy of
any or all of the documents incorporated by reference into 


<PAGE>

this Prospectus (without exhibits to such documents other than exhibits
specifically incorporated by reference into such documents).  Requests for such
copies should be directed to: General Counsel of the Company, 62 Fourth Avenue,
Waltham, Massachusetts 02154; telephone (617) 290-0710.

    No person has been authorized to give any information or to make any
representations in connection with this offering other than those contained in
this Prospectus and, if given or made, such other information and
representations must not be relied upon as having been authorized by the
Company.  Neither the delivery of this Prospectus nor any sale made hereunder
shall, under any circumstances, create any implication that there has been no
change in the affairs of the Company since the date hereof or that the
information contained herein is correct as of any time subsequent to its date. 
This Prospectus does not constitute an offer to sell or a solicitation of an
offer to buy any securities other than the registered securities to which it
relates.  This Prospectus does not constitute an offer to sell or a solicitation
of an offer to buy such securities in any circumstances in which such offer or
solicitation is unlawful.

<PAGE>


                                     THE COMPANY
                                           
    Interleaf develops and markets software that is used in the creation, 
management and distribution of documents.  The Company's software enables 
customers to compose, edit, view and print documents, while also facilitating 
their electronic management, preparation, conversion and distribution.  The 
Company offers its customers an integrated document publishing ("IDP") 
solution to meet both the needs of the document author and information user. 
The Company's principal offices are located at 62 Fourth Avenue, Waltham, 
Massachusetts 02154, and its telephone number is (781) 290-0710.

                                     RISK FACTORS
                                           
    From time to time, information provided by the Company or statements made
by its employees may contain forward-looking information. The Company's actual
future results may differ materially from those projections or suggestions made
in such forward-looking information and may fluctuate between operating periods.
Certain factors that might cause such differences and fluctuations include the
factors discussed below.

    The Company's future operating results are dependent on its ability to 
develop and market IDP software products and services that meet the changing 
needs of organizations with complex document publishing requirements. There 
are numerous risks associated with this process, including rapid 
technological change in the information technology industry and the 
requirement to bring to market IDP applications that solve complicated 
business needs in a timely manner. In addition, the existing document 
publishing, electronic distribution, and document management markets are 
highly competitive. Many of these competitors are larger and better funded 
than the Company. The Company competes for sales of its software products on 
both an individual product basis and integrated with services in large IDP 
solution sales.

    Given the reduction in the Company's revenues and employee base over recent
periods, the Company will face difficulties in managing and implementing its
plans for growth, including without limitation difficulties in attracting and
retaining key technical, sales and executive personnel given the current
extremely competitive labor conditions, and difficulties in managing
relationships with distributors, vendors, customers and other third parties.

    Sales cycles associated with IDP solution sales are long because
organizations frequently require the Company to solve complex business problems
that typically involve reengineering of their business processes. In addition, a
high percentage of the Company's product license revenues are generally realized
in the last month of a fiscal quarter and can be difficult to predict until the
end of a fiscal quarter. Accordingly, given the Company's relatively fixed cost
structure, a shortfall or increase in product license revenue can have a
significant impact on the Company's operating results and liquidity.

    The Company markets its software products and services worldwide. Global
and/or regional economic factors, currency exchange rate fluctuations, and
potential changes in laws and regulations affecting the Company's business could
impact the Company's financial condition or future operating results.

    The market price of the Common Stock may be volatile at times in
response to fluctuations in the Company's quarterly operating results, changes
in analysts' earnings estimates, market conditions in the computer software
industry, as well as general economic conditions and other factors external to
the Company. 

<PAGE>


    Due to the uncertainty among the Company's customers and employees created
by the Company's two restructurings in the fiscal year ended March 31, 1997,
along with the downward trend in the Company's revenue, the Company is unable to
predict with any level of certainty its future revenue.  The Company will
continue to closely monitor its expenses and cost structure.  The Company
believes its current cash position will meet the Company's liquidity needs for
fiscal 1998 and the foreseeable future. There can be no assurance that the
Company can fund its longer term ongoing business operations unless revenue
stabilizes.  If the Company's cash resources are insufficient to fund its
operations at any time, there can be no assurances that the Company will be able
to obtain additional capital or, if it does so, that such capital can be
obtained at commercially reasonable terms or without incurring substantial
dilution to existing shareholders.


                                   USE OF PROCEEDS
                                           
                                           
    The Company will not receive any proceeds from the sale of Common Stock by
the Selling Shareholders.  


                                THE PURCHASE AGREEMENT
Preferred Stock Private Placement

General

As of September 30, 1997, the Company completed, with shareholder approval 
being sought as described below, a private placement transaction pursuant to 
which it received aggregate net proceeds of approximately $6.8 million (after 
fees to the placement agent and estimated transaction expenses) from the 
issuance of shares of 6% Convertible Preferred Stock and related placement 
agent warrants. Such transaction is referred to herein as the "1997 Private 
Placement," and the related securities issuance including shares of Common 
Stock issuable upon the conversion of shares of 6% Convertible Preferred 
Stock, as dividends thereon and upon exercise of the placement agent 
warrants) are referred to as the "1997 Private Placement Issuances." All of 
the securities sold in the 1997 Private Placement Issuances were sold in 
private placements solely to accredited investors under the Securities Act.

Summary of Transaction Terms

Set forth below is a summary of the terms of the 1997 Private Placement 
Issuances, which summary is qualified by reference to the full text of the 
underlying documents which have been previously filed as exhibits to the 
Company's Quarterly Report on Form 10-Q for the quarter ended September 30, 
1997.

Pursuant to the terms of the Investment Agreement, the Company issued and 
sold in a private placement to certain accredited investors for $1,000 per 
share an aggregate of 7,625 restricted shares of a newly-established series 
of preferred stock, designated as 6% Convertible Preferred Stock, resulting 
in gross proceeds to the Company of $7.6 million.

Each share of 6% Convertible Preferred Stock is entitled to receive dividends,
payable annually on September 30 of each year, when and as declared by the
Company's Board of Directors, at the rate of 6% per annum in preference to any
payment made on any shares of Common Stock or any other class or series of
capital stock of the Company other than the Series C Preferred Stock, which has
rights to dividends pari passu with the 6% Convertible Preferred Stock. Such
dividends accrue from day to day whether or not earned or declared. Any 

<PAGE>

dividend payable after the date of issuance of the 6% Convertible Preferred 
Stock may be paid (i) in additional shares of 6% Convertible Preferred Stock 
valued at $1,000 per share, or (ii) upon proper notice, in cash. Each share 
of 6% Convertible Preferred Stock is also entitled to a liquidation 
preference of $1,000 per share, plus any accrued but unpaid dividends and any 
amounts owing as a result of a failure by the Company to file an effective 
registration statement within the prescribed period (described below), in 
preference to any other class or series of capital stock of the company 
(except the Series C preferred Stock, which is pari passu with the 6% 
Convertible Preferred Stock). Except to determine whether such stock is 
entitled to its liquidation preference under certain circumstances, and as 
provided by applicable law, holders of shares of 6% Convertible Preferred 
Stock have no voting rights.

Commencing on December 29, 1997, at least 10% and up to 25% (depending upon the
price at which the Common Stock is trading) of the number of shares of 6%
Convertible Preferred Stock held of record by each holder on such day, shall
become convertible into shares of Common Stock, and thereafter on the successive
monthly anniversaries of such day additional shares of 6% Convertible Preferred
Stock shall become convertible (with the additional amount varying from 10% to
25% of the number of shares of 6% Convertible Preferred Stock held of record by
such holder on such day depending upon the price at which Common Stock is
trading) except that in any month when the highest of the Common Stock's daily
low trading prices is $2.50 or less, not more than 10% of each holder's shares
of 6% Convertible Preferred Stock held of record on such day shall be
convertible.

The number of shares of Common Stock issuable upon conversion of shares of 6% 
Convertible Preferred Stock will equal the liquidation preference of the 
shares being converted divided by the then-effective conversion price 
applicable to the Common Stock (the "Conversion Price"). The Conversion Price 
as of any date during the seven-month period following the date of issuance 
shall be $5.50. The Conversion Price as of any date after the seven-month 
period following the date of issuance and before the first day of the 
sixteenth month after the date of issuance shall be the lowest trading price 
of the Common Stock during the twenty-two (22) consecutive trading days 
immediately preceding the date of conversion, reduced by the "Applicable 
Percentage", described below, except that the Conversion Price shall be not 
less than $1.50 prior to the first day of the thirteenth month after closing. 
The "Applicable Percentage" is dependent upon the time which has passed from 
original issuance to the date of measurement, being 9.8% starting on the 
first day of the eighth month and increasing in each subsequent month to 
11.1%, 12.4%, 13.7%, and 15%. At any date after the first day of the 
sixteenth month after the date of issuance, the Conversion Price will be the 
lesser of (a) 85% of the average of low daily trading price of the Common 
Stock for all the trading days during the 12th through15th month (provided 
that in no event shall this amount be less than $2.8126), or (b) 85% of the 
average of the lowest daily trading price of the Common Stock during the 
twenty-two (22) consecutive trading days immediately preceding the date of 
conversion (the "Conversion Cap").  The Conversion Price is at all times also 
subject to adjustment for customary anti-dilution events such as stock 
splits, stock dividends, reorganizations and certain mergers affecting the 
Common Stock.  Five years from the date of original issue, all of the then 
outstanding shares of 6% Convertible Preferred Stock will be automatically 
converted into shares of Common Stock at the then-applicable Conversion 
Price. No holder of 6% Convertible Preferred Stock will be entitled to 
convert any share of 6% Convertible Preferred Stock into shares of Common 
Stock if, following such conversion, the holder and its affiliates (within 
the meaning of the Exchange Act) will be the beneficial 
owners (as defined in rule 13d-3 thereunder) of 10% or more of the 
outstanding shares of Common Stock. 

In addition, following conversion of the 6% Convertible Preferred Stock into
shares of Common Stock, the holders of such shares of Common Stock have agreed
to be limited on resales of such shares on any trading day to the greatest of:
(i) 10% of the average daily trading volume of the Common Stock for the five
trading days preceding any such sales; (ii) 12,000 shares; or (iii) 10% of the
trading volume for the Common Stock on the 

<PAGE>


date of any such sale.  Furthermore, the Company has the right, upon proper
notice, if the Conversion Price falls below three dollars ($3.00) (or such other
price as is set by the Company in accordance with certain notice provisions),
and subject to certain other conditions, to honor any conversion request by a
cash payment in lieu of the issuance of Common Stock in an amount equal to the
proceeds which would otherwise have been received by the holder if conversion
were in fact made into Common Stock and such Common Stock were sold at the high
trade price on the trading day immediately preceding the date that the
conversion notice is received (the "Green Floor").

The Company is not obligated to issue, in the aggregate, more than 3,150,000 
shares of Common Stock if issuance of a larger number of shares would 
constitute a breach of the Rules or Designation Criteria of The Nasdaq Stock 
Market, Inc. (the "Nasdaq Rules"). If shareholder approval of the 1997 
Private Placement Issuances is not received by December 31,1997, the Company 
will be obligated to redeem, at a premium price, a sufficient number of 
shares of 6% Convertible Preferred Stock which, in its reasonable judgment, 
will permit conversion of the remaining shares of 6% Convertible Preferred 
Stock without breaching the Nasdaq Rules. Any delay in payment will cause 
such redemption amount to accrue interest at the rate of 0.1% per day until 
paid. Subject to this requirement to effect a special redemption of the 6% 
Convertible Preferred Stock, if the issuance of Common Stock upon conversion 
of any shares of 6% Convertible Preferred Stock would constitute a breach of 
the Nasdaq Rules, then the Company has agreed to exercise the Green Floor 
with respect to such issuance. Pursuant to its agreement with Nasdaq, the 
Company will reserve $1 million from the 1997 Private Placement proceeds for 
a period of 18 months to be used solely for the purpose of funding the 
exercise of the Green Floor, but there is no other restriction on the 
Company's use of such proceeds. There is no assurance that the proceeds of 
the 1997 Private Placement will be available to fund any required cash 
redemption of 6% Convertible Preferred Stock or that the $1 million reserved 
by the Company will be sufficient to fund the exercise of the Green Floor.

The Company has agreed to register the shares of Common Stock issuable upon 
conversion of the 6% Convertible Preferred Stock, including shares payable as 
dividends thereon, and shares issuable upon exercise of the Placement Agent 
Warrants and conversion of the underlying 6% Convertible Preferred Stock, for 
resale under the Securities Act no later than 90 days after original 
issuance. Any delay in having the related registration statement declared 
effective by the Commission beyond the applicable period, or any 
unavailability to the holders of the 6% Convertible Preferred Stock of a 
current prospectus after such period, will result in the payment by the 
Company to each holder, in cash, of 3% of the total purchase price of the 6% 
Convertible Preferred Stock for each 30-day period of the delay (pro rated 
for any shorter period).

The placement agent for the issuances described above was Cappello Capital 
Corp. (the "Placement Agent"). In consideration for placing such securities, 
the Placement Agent received aggregate cash compensation of 8.7% of the gross 
proceeds received by the Company, or $663,375. Further, the Company also 
agreed to issue to the Placement Agent 6% Convertible Preferred Stock 
Warrants to acquire an aggregate of 763 shares of 6% Convertible Preferred 
Stock for a purchase price of $1,000 per share (subject to the same 
anti-dilution protections as are applicable to the 6% Convertible Preferred 
Stock). Such warrants will be exercisable for a period of five years for 
shares of 6% Convertible Preferred Stock. The Company is obligated to 
register the shares of Common Stock issuable upon exercise and conversion of 
the Placement Agent warrants for resale under the Securities Act, and is 
doing so herein. The Placement Agent will retain its compensation whether or 
not the required shareholder approval of the 1997 Private Placement Issuances
is obtained.

<PAGE>

Shareholder Approval

The Company intends to seek the approval of its shareholders of the 1997 Private
Placement Issuance to satisfy certain shareholder approval requirements
contained in the Company's agreements with Nasdaq and with the holders of 6%
Convertible Preferred Stock. It is presently expected that this approval will be
sought at a special meeting of Shareholders to be held on December 17, 1997.

                                 SELLING SHAREHOLDERS

    The following table sets forth the number of shares of Common Stock 
beneficially owned by each of the Selling Shareholders as of November 26, 
1997. All of the shares by each of the Selling Shareholders are being offered 
for sale pursuant to this Prospectus, and if all of the shares offered hereby 
are sold as described herein, none of the Selling Shareholders will 
beneficially own any shares of Common Stock.  The Selling Shareholders have 
not held any positions or offices with, been employed by, or otherwise had a 
material relationship with, the Company (other than as shareholders of 
Interleaf after the purchase of the 6% Convertible Preferred Stock).  

<TABLE>
<CAPTION>
                                                                       Number of
                                                                       Shares of
                               Number of Shares                        Common
                                 of Common Stock        Number of       Stock
                              Beneficially Owned        Shares of       Owned 
                                    as of            Common Stock     after the
Name of Selling Shareholder   November 26, 1997(1)    Being Offered    Offering
- ---------------------------   --------------------   --------------   ----------
<S>                           <C>                    <C>              <C>
SIL Nominees Ltd.                  1,000,000         1,000,000           - 0 -
Leonardo, L.P. (2)                   633,333           633,333           - 0 -
Olympus Securities, Ltd. (3)         366,667           366,667           - 0 -
The Tail Wind Fund Ltd.              333,333           366,333           - 0 -
Deere Park Capital
   Management, Inc.                  333,333           333,333           - 0 -
Lakeshore International Ltd.         333,333           333,333           - 0 -
Newberg Family Trust                 333,333           333,333           - 0 -
Nelson Partners (4)                  300,000           300,000           - 0 -
Ramius Fund, Ltd. (5)                266,667           266,667           - 0 -
Raphael, L.P. (6)                    200,000           200.000           - 0 -
Earl E. Gales, Jr.                   166,667           166,667           - 0 -
Laredo Capital Partners (7)          133,333           133,333           - 0 -
Hick Investments, Ltd. (8)           133,333           133,333           - 0 -
Crisostomo B. Garcia                 100,000           100,000           - 0 -
Profutures Fund
   Management, Inc.                   83,333            83,333           - 0 -
Ted Meisel                            66,667            66,667           - 0 -
NY DBL Diamond (9)                    66,667            66,667           - 0 -
AG Superfund Int'l
   Partners, L.P. (10)                50,000            50,000           - 0 -
G.A.M. Arbitrage 
   Investments, Inc. (11)             50,000            50,000           - 0 -
Gerard Cappello (12)                 186,000           186,000           - 0 -
Linda Cappello (13)                  262,666           262,666           - 0 -
Lawrence K. Fleishman (14)           126,667           126,667
Kenneth Staub                         33,333            33,333           - 0 -
Barry Meisel                          16,667            16,667           - 0 -
John M. Bendheim, Jr.                 16,667            16,667           - 0 -
</TABLE>

<PAGE>

1.  Such beneficial ownership represents an estimate of the number of shares of
    Common Stock issuable upon the conversion of shares of 6% Convertible
    Preferred Stock beneficially owned by such person (either directly or
    through the exercise of 6% Convertible Preferred Stock Warrants), assuming
    a price of $1.50 per share of Common Stock was used to determine the number
    of shares of Common Stock issuable upon conversion, and presuming that all
    dividends will be paid in cash.  The actual number of shares of Common
    Stock offered hereby is subject to adjustment and could be materially less
    or more than the estimated amount indicated depending upon factors which
    cannot be predicted by the Company at this time, including, among others,
    application of the conversion provisions based on market prices prevailing
    at the actual date of conversion and whether dividends on shares of 6%
    Convertible Preferred Stock are paid in cash or in additional shares of 6%
    Convertible Preferred Stock.  In order to calculate the number of shares 
    of 6% Convertible Preferred Stock or 6% Convertible Preferred Stock 
    Warrants to purchase such shares beneficially held, multiply the amount 
    included in the column captioned "Common Shares Beneficially Owned as of 
    November 26, 1997" by 0.0015.  This presentation is not intended to 
    constitute a prediction as to the future market price of the Common Stock 
    or as to when Selling Shareholders will elect to convert shares of 
    6% Convertible Preferred Stock (other than the shares of 6% Convertible 
    Preferred Stock issued as dividends) and the 6% Convertible Preferred 
    Stock Warrants issued in the 1997 Private Placement.

2.  Mr. Michael L. Gordon serves as an officer in an entity which is an
    investment adviser to Leonardo, L.P., which beneficially holds 633,333
    shares, as indicated above. This amount does not include 200,000 shares
    beneficially held by Raphael, L.P., 266,667 shares beneficially held by 
    Ramius Fund, Ltd., 133,333 shares beneficially held by Hick Investments, 
    Ltd., 50,000 shares beneficially held by G.A.M. Arbitrage Investments, 
    Inc., and 50,000 shares beneficially held by A.G. Superfund International 
    Partners, L.P., all of which have investment advisors in which 
    Mr. Gordon also serves as an officer.

3.  Ms. Anne Dupuy serves as a Director in Olympus Securities, Ltd., which
    beneficially holds 366,667 shares, as indicated above. This amount does 
    not include 300,000 shares beneficially held by Nelson Partners, an entity
    in which Ms. Dupuy serves as an officer.

4.  Ms. Ann Dupuy serves as an officer of Nelson Partners, which beneficially
    holds 300,000 shares, as indicated above. This amount does not include
    366,667 shares held beneficially by Olympus Securities, Ltd., an entity
    in which Ms. Dupuy also serves as a Director.

5.  Mr. Michael L. Gordon serves as an officer of an entity which is 
    investment adviser to Ramius Fund, Ltd., which is the beneficial holder 
    of 266,667 shares, as indicated above. This amount does not include 
    633,333 shares beneficially held by Leonardo, L.P., 50,000 shares 
    beneficially held by G.A.M. Arbitrage Investments, Inc., 133,333 
    shares beneficially held by Hick Investments, Ltd., and 50,000 shares 
    beneficially held by A.G. Superfund International Partners, L.P., all of 
    which have investment advisors in which Mr. Gordon also serves as an 
    officer.

6.  Mr. Michael L. Gordon serves as an officer in an entity which is an 
    investment advisor to Raphael, L.P., which beneficially holds 200,000 
    shares, as indicated above. This amount does not include 633,333 shares 
    beneficially held by Leonardo, L.P., 266,667 shares beneficially held by
    Ramius Fund, Ltd., 133,333 shares shares beneficially held by Hick 
    Investments, Ltd., 50,000 shares beneficially held by G.A.M. Arbitrage 
    Investments, Inc., and 50,000 shares beneficially held by A.G. Superfund 
    International Partners, L.P., all of which have investment advisors in 
    which Mr. Gordon also serves as an officer.
<PAGE>

7.  Lawrence K. Fleishman is a partner in Laredo Capital Partners. This amount
    does not include 66,667 shares listed as beneficially owned by NY DBL
    Diamond, an entity in which Mr. Fleishman is also a partner, nor does it 
    include 126,667 shares beneficially held by Mr. Fleishman individually,
    as listed above.

8.  Mr. Michael L. Gordon serves as an officer of an entity which is an 
    investment advisor to Hick Investments, Ltd., a beneficial holder of
    133,333 shares, as indicated above. This amount does not include 633,333 
    shares beneficially held by Leonardo, L.P., 266,667 shares beneficially 
    held by Ramius Fund, Ltd., 200,000 shares beneficially held by Raphael, 
    L.P., 50,000 shares beneficially held by G.A.M. Arbitrage Investments, 
    Inc., and 50,000 shares beneficially held by A.G. Superfund 
    International Partners, L.P., all of which have investment advisors in 
    which Mr. Gordon also serves as an officer.

9.  Mr. Lawrence K. Fleishman is a partner in NY DBL Diamond. This amount does
    not include 50,000 shares beneficially owned by AG Superfund International
    Partners, L.P., an entity in which Mr. Fleishman also serves as partner, 
    nor 126,667 shares held by Mr. Fleishman individually, as listed above.

10. Mr. Michael L. Gordon serves as an officer in an entity which is an 
    investment advisor to A.G. Superfund, Ltd., which beneficially holds 
    50,000 shares, as indicated above. This amount does not include 200,000
    shares beneficially held by Raphael, L.P., 266,667 shares beneficially 
    held by Ramius Fund, Ltd., 633,333 shares beneficially held by Leonardo, 
    L.P., 133,333 shares beneficially held by Hick Investments, Ltd., 50,000 
    shares beneficially held by G.A.M. Arbitrage Investments, Inc., and 
    50,000 shares beneficially held by A.G. Superfund International 
    Partners, L.P., all of which have investment advisors in which Mr. Gordon 
    also serves as an officer.

11. Mr. Michael L. Gordon serves as an officer in an entity which is an 
    investment advisor to G.A.M. Arbitrage Investments, Inc., which 
    beneficially holds 50,000 shares, as indicated above. This amount does not
    include 200,000 shares beneficially held by Raphael, L.P., 266,667 shares 
    beneficially held by Ramius Fund, Ltd., 633,333 shares beneficially held 
    by Leonardo, L.P., $133,333 shares held by Hick Investments, Ltd., 50,000 
    shares beneficially held by G.A.M. Arbitrage Investments, Inc., and 
    50,000 shares beneficially held by A.G. Superfund International Partners, 
    L.P., all of which have investment advisors in which Mr. Gordon also 
    serves as an officer.

12. Includes a warrant to purchase 229 shares of 6% Convertible Preferred 
    Stock. This warrant is exercisable immediately, and represents 
    beneficial ownership of 152,667 shares of Common Stock.

13. Includes a warrant to purchase 344 shares of 6% Convertible Preferred 
    Stock. This warrant is exercisable immediately, and represents 
    beneficial ownership of 229,333 shares of Common Stock.

14. Includes a warrant to purchase 140 shares of 6% Convertible Preferred 
    Stock. This warrant is exercisable immediately, and represents 
    beneficial ownership of 126,667 shares of Common Stock. Does not include
    133,333 shares beneficially held by Laredo Capital Partners in which
    Lawrence K. Fleishman is a partner, and 66,667 shares beneficially held
    by NY DBL Diamond Group, in which Mr. Fleishman also serves as a partner.

<PAGE>

                                 PLAN OF DISTRIBUTION
                                           
                                           
    Shares of Common Stock covered hereby may be offered and sold from time 
to time by the Selling Shareholders.  The Selling Shareholders will act 
independently of the Company in making decisions with respect to the timing, 
manner and size of each sale.  Such sales may be made in the over-the-counter 
market or otherwise, at prices related to the then current market price or in 
negotiated transactions, including pursuant to an underwritten offering or 
one or more of the following methods:  (a) purchases by a broker-dealer as 
principal and resale by such broker or dealer for its account pursuant to 
this Prospectus; (b) ordinary brokerage transactions and transactions in 
which the broker solicits purchasers; and (c) block trades in which the 
broker-dealer so engaged will attempt to sell the shares as agent but may 
position and resell a portion of the block as principal to facilitate the 
transaction.  The Company has been advised by the Selling Shareholders that 
they have not made any arrangements relating to the distribution of the 
shares covered by this Prospectus.  In effecting sales, broker-dealers 
engaged by the Selling Shareholders may arrange for other broker-dealers to 
participate.  Broker-dealers will receive commissions or discounts from the 
Selling Shareholders in amounts to be negotiated immediately prior to the 
sale.  The Investment Agreement provides that the Company will indemnify the 
Selling Shareholders against certain liabilities, including liabilities under 
the Securities Act.

    In offering the shares of Common Stock covered hereby, the Selling
Shareholders and any broker-dealers and any other participating broker-dealers
who execute sales for the Selling Shareholders may be deemed to be
"underwriters" within the meaning of the Securities Act in connection with such
sales, and any profits realized by the Selling Shareholders and the compensation
of such broker-dealer may be deemed to be underwriting discounts and
commissions.  

    The Company has advised the Selling Shareholders that during such time as 
they may be engaged in a distribution of Common Stock included herein they 
are required to comply with Rules 10b-6 and 10b-7 under the Exchange Act and, 
in connection therewith, that they may not engage in any stabilization 
activity in connection with the Company's securities, are required to furnish 
to each broker-dealer through which Common Stock included herein may be 
offered copies of this Prospectus, and may not bid for or purchase any 
securities of the Company or attempt to induce any person to purchase any 
securities of the Company except as permitted under the Exchange Act.  The 
Selling Shareholders have agreed to inform the Company when the distribution 
of the shares of Common Stock offered hereby is completed.

    Rule 10b-6 under the Exchange Act prohibits, with certain exceptions,
participants in a distribution from bidding for or purchasing, for an account in
which the participant has a beneficial interest, any of the securities that are
the subject of the distribution.  Rule 10b-7 governs bids and purchases made in
order to stabilize the price of a security in connection with a distribution of
the security.

    This offering will terminate on the date on which all shares offered 
hereby have been sold by the Selling Shareholders.

                                    LEGAL MATTERS
                                           
    The validity of the shares of Common Stock offered hereby will be passed
upon for the Company by Craig Newfield, Esq., General Counsel to the Company.

                                       EXPERTS

    The consolidated financial statements of Interleaf, Inc. appearing in 
Interleaf, Inc.'s Annual Report (Form 10-K) for the year ended March 31, 
1997, have been audited by Ernst & Young LLP, independent auditors, as 

<PAGE>

set forth in their report thereon included therein and incorporated herein by
reference.  Such consolidated financial statements are incorporated herein by
reference in reliance upon such report given upon the authority of such firm as
experts in accounting and auditing.


<PAGE>
                                       PART II
                                           
                                           
                        INFORMATION NOT REQUIRED IN PROSPECTUS
                                           
                                           
Item 14.  Other Expenses of Issuance and Distribution.


Nature of Expense

SEC Registration Fee                                                    $6,000
Legal Fees and Expenses                                                  1,000
Accounting Fees and Expenses                                             5,000
Miscellaneous                                                              500
TOTAL                                                                   12,500





Item 15.  Indemnification of Directors and Officers.

    (a)  Section 67 of the Massachusetts Business Corporation Law permits
indemnification of present and former directors and officers to the extent
specified in or authorized by (i) the articles of organization, (ii) a by-law
adopted by the stockholders, (iii) a vote adopted by the holders of a majority
of the shares of stock entitled to vote, or (iv) in the case of officers who are
not directors, by the Board of Directors, except that no indemnification shall
be provided for any person with respect to any matter as to which he shall have
been adjudicated in any proceeding not to have acted in good faith in the
reasonable belief that his action was in the best interests of the corporation. 
Section 67 also provides that the absence of any express provision for
indemnification shall not limit any right of indemnification existing
independently of such Section.

    (b)  Article V of the Company's By-laws provides that the Company shall, to
the extent legally permissible, indemnify each former or present director or
officer against all liabilities and expenses imposed upon or incurred by any
such person in connection with, or arising out of, the defense or disposition of
any action, suit or other proceeding, civil or criminal, in which he may be
threatened or involved, by reason of his having been a director or officer;
provided that the Company shall provide no indemnification with respect to any
matter as to which any such person shall be finally adjudicated in such action,
suit or proceeding not to have acted in good faith in the reasonable belief that
his action was in the best interests of the Company.  If any such action is
disposed of, on the merits or otherwise, without the disposition being adverse
to the director or officer and without an adjudication that such person did not
act in good faith in the reasonable belief that his action was in the best
interests of the Company, the director or officer is entitled to indemnification
as a matter of right.  In all other cases, indemnification shall be made as of
right unless after investigation (a) by the Board of Directors by a majority
vote of a quorum of disinterested directors, or (b) by written opinion of
independent legal counsel (who may be regular counsel of the Company), or (c)
the holders of a majority of outstanding stock entitled to vote (exclusive of
stock owned by any interested directors or officers), it shall be determined by
clear and convincing evidence that such person did not act in good faith and in
a manner reasonably believed to be in or not opposed to the best interest of the
Company.  Indemnification may include advancement of expenses of defending an
action upon receipt of an undertaking by the person indemnified to repay such
advances if it is ultimately determined that such person is not entitled to
indemnification under Article V.  Article V also provides that the right of
indemnification provided therein is not exclusive of and does not affect any
other rights to which any director or officer may be entitled under any
agreement, statute, vote of stockholders or otherwise.  The Company's obligation
to indemnify under Article V shall be offset to the extent of any other source
of indemnification or any otherwise applicable insurance coverage.



                                         II-1

<PAGE>


    (c)  The Company has entered into an Agreement to Defend and Indemnify 
with each of its officers and directors.  Pursuant to these agreements, the 
Company has agreed, to the extent legally permissible, to indemnify such 
person against all losses (including, without limitation, judgments, fines 
and penalties) and expenses (including, without limitation, amounts paid in 
settlement and counsel fees and disbursements) incurred by such person in 
connection with or as a result of any claim, action, suit or other 
proceeding, civil or criminal, or appeal related thereto, in which he may be 
involved by reason of his having been a director or officer or by reason of 
any action taken or not taken in his capacity as director or officer; 
provided that no indemnification shall be provided with respect to any matter 
as to which such person shall not have acted in good faith in the reasonable 
belief that his action was in the best interests of the Company.  If any such 
claim, action, suit or proceeding is disposed of, on the merits or otherwise, 
without the disposition being adverse to such person, without a plea of 
guilty or NOLO CONTENDRE and without an adjudication that such person did not 
act in good faith in the reasonable belief that his action was in the best 
interests of the Company, the director or officer is entitled to 
indemnification as a matter of right.  In all other cases, indemnification 
shall be made upon a determination that such person's conduct was in good 
faith and in the reasonable belief that his action was in the best interests 
of the Company by (a) a quorum of disinterested directors, or (b) independent 
legal counsel (who may be regular counsel of the Company), or (c) the holders 
of a majority of outstanding stock entitled to vote (exclusive of stock owned 
by an interested directors or officer).  Expenses may be advanced by the 
Company prior to any final disposition of any such action upon receipt of an 
undertaking by the person indemnified to repay such advances if it is 
ultimately determined that such person is not entitled to indemnification 
under the Agreement.  Such Agreements provide that the right of 
indemnification provided therein is in addition to any rights to which any 
person concerned may be entitled by other agreements or as a matter of law, 
and shall inure to the benefit of the heirs, executors and administrators of 
the indemnified person. The rights of indemnification provided in such 
Agreements are in addition to any rights under any insurance policy in 
effect, provide that to the extent any claim is covered by any such insurance 
policy, the Company will provide coverage after the full coverage of the 
insurance policy is exhausted or otherwise unavailable.

    (d)  Article 6D of the Company's Articles of Organization provides that, to
the fullest extent permitted by Chapter 156B of the Massachusetts General Laws,
a director of the Company shall not be personally liable to the Company or its
stockholders for monetary damages for breach of fiduciary duty as a director,
notwithstanding any provision of law imposing such liability.  Section 13(b)(1
1/2) of Chapter 156B of the Massachusetts General Laws permits a corporation to
include in its articles of organization a provision eliminating or limiting the
personal liability of a director to the corporation or its stockholders for
monetary damages for breach of fiduciary as a director, except for (i) any
breach of the director's duty of loyalty to the corporation and its
stockholders, (ii) acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of the law, (ii) improper
issuances of stock or unauthorized distributions to stockholders, or (iv) any
transaction in which the director derived an improper personal benefit.

                                         II-2

<PAGE>

Item 16.  Exhibits.

Exhibit                      Description of Exhibit
Page

  4.1         Restated Articles of Organization of the Company, 
              as amended                                                      *
  4.2         Amended and Restated By-laws of the Company                    **
  4.3         Specimen Certificate for Shares of the Company's 
                Common Stock                                                ***
  5.1         Opinion of Craig Newfield, Esq.                          Included
 23.1         Consent of Ernst & Young LLP                             Included
 23.2         Consent of Craig Newfield, Esq. (included in 
                Exhibit 5.1)                                           Included
 24.1         Power of Attorney (included in II-6)                     Included

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

*        Incorporated herein by reference from the applicable Exhibit to the
         Company's Report on Form 10-Q for the quarter ended September 30,
         1997, File Number 0-14713.

**       Incorporated herein by reference from the applicable Exhibit to the
         Company's Annual Report on Form 10-K for the year ended March 31,
         1994, File Number 0-14713.

***      Incorporated herein by reference from the applicable Exhibit to
         Registration Statement on Form S-1 (File No. 33-5743)


Item 17.  Undertakings.

    The Company hereby undertakes:

    (1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this Registration Statement:

         (i)     To include any prospectus required by Section 10(a)(3) of the
    Securities Act of 1933, as amended (the "Securities Act"); 

         (ii)    To reflect in the prospectus any facts or events arising after
    the effective date of this Registration Statement (or the most recent
    post-effective amendment thereof) which, individually or in the aggregate,
    represent a fundamental change in the information set forth in this
    Registration Statement; 

         (iii)   To include any material information with respect to the plan
    of distribution not previously disclosed in this Registration Statement or
    any material change to such information in this Registration Statement;

provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if the
information required to be included in a post-effective amendment by those
paragraphs is contained in periodic reports filed by the Company pursuant to
Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as amended
(the "Exchange Act") that are incorporated by reference in this Registration
Statement.

    (2)  That, for the purposes of determining any liability under the
Securities Act, each post-effective amendment that contains a form of prospectus
shall be deemed to be a new registration statement relating to the securities
offered therein, and the offering of such securities at the time shall be deemed
to be the initial bona fide offering thereof.

                                         II-3

<PAGE>


    (3)  To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

























                                         II-4

<PAGE>

    The Company hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Company's annual report
pursuant to Section 13(a) or 15(d) of the Exchange Act (and, where applicable,
each filing of an employee benefit plan's annual report pursuant to Section
15(d) of the Exchange Act) that is incorporated by reference in this
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein and the offering of such securities
at the time shall be deemed to be the initial bona fide offering thereof.

    Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the Company
pursuant to the indemnification provisions described herein, or otherwise, the
Company 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 Company
of expenses incurred or paid by a director, officer or controlling person of the
Company 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 Company 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-5

<PAGE>

                                      SIGNATURES
                                           
    Pursuant to the requirements of the Securities Act of 1933, the Company
certifies that it has reasonable grounds to believe that it meets all of the
requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Waltham, Commonwealth of Massachusetts on the 
26th day of November, 1997.
                                           
                                           
                                            INTERLEAF, INC.
                                           
                                           
                                            By: /s/ Jaime W. Ellertson 
                                                -------------------------
                                               Jaime W. Ellertson
                                               President and Chief 
                                               Executive Officer
                                           
                                           
                           SIGNATURES AND POWER OF ATTORNEY
                                           
    Each person whose signature appears below constitutes and appoints Jaime W.
Ellertson, Robert R. Langer, and Craig Newfield, and each of them, his true and
lawful attorneys-in-fact and agents, with full power of substitution and
resubstitution in each of them, for him and in his name, place and stead, and in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement on Form S-3 of Interleaf, Inc. and to
file the same, with all exhibits thereto, and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite or necessary to be done in
and about the premises, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them or their or his substitutes or
substitute, may lawfully do or cause to be done by virtue hereof.

    Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities indicated on the 26th day of November, 1997.


    Signature                          Title
    ---------                          ------

/s/ JAIME W. ELLERTSON            President and Chief Executive Officer,
- -------------------------         and Director 
    Jaime W. Ellertson            (Principal Executive Officer)


/s/ ROBERT R. LANGER              Vice President of Finance and Administration,
- -------------------------         Chief Financial Officer and Treasurer 
    Robert R. Langer              (Principal Financial and Accounting Officer)


/s/ FREDERICK B. BAMBER           Director
- -------------------------
    Frederick B. Bamber


/s/ DAVID A. BOUCHER              Director
- -------------------------
    David A. Boucher


/s/ RORY J. COWAN                 Chairman of the Board of Directors
- -------------------------
    Rory J. Cowan

                                         II-6

<PAGE>


/s/ MARCIA J. HOOPER              Director
- -------------------------
    Marcia J. Hooper


/s/ GEORGE D. POTTER, JR.         Director
- -------------------------
    George D. Potter, Jr.











                                         II-7

<PAGE>

                                                            EXHIBIT 5.1


November 26, 1997


Interleaf, Inc.
62 Fourth Avenue
Waltham, MA  02154


Gentlemen:

               I have assisted in the preparation of a Registration Statement 
on Form S-3 to be filed with the Securities and Exchange Commission (the 
"Registration Statement"), relating to 5,592,000 shares of Common Stock, $.01 
par value per share (the "Shares"), of Interleaf, Inc., a Massachusetts 
corporation (the "Company"), pursuant to the several 6% Convertible Preferred 
Stock Investment Agreements between the Company and each of certain accredited 
investors (collectively, the "Agreement").

               I have examined (i) the Restated Articles of Organization and 
By-laws of the Company and all amendments thereto, (ii) the Agreement, and 
(iii) such records of meetings of the directors and stockholders of the 
Company, documents and other instruments as in my judgment are necessary or 
appropriate to enable me to render the opinion expressed below.

               In my examination of the foregoing documents, I have assumed 
the genuineness of all signatures and the authenticity of all documents 
submitted to me as originals, the conformity to original documents of all 
documents submitted to me as certified or photostatic copies, and the 
authenticity of the originals of such latter documents.

               Based upon the foregoing, I am of the opinion that the Shares 
have been duly authorized for issuance and, when issued upon conversion of 
the Series 6% Convertible Preferred Stock in accordance with the terms 
thereof and pursuant to the terms of the Agreement, will be legally issued, 
fully paid and nonassessable.

               I hereby consent to the use of my name in the Registration 
Statement and consent to the filing of this opinion with the Securities and 
Exchange Commission as an exhibit to the Registration Statement.

Very truly yours,


/s/ CRAIG NEWFIELD
- --------------------
Craig Newfield, Esq.
GENERAL COUNSEL


<PAGE>

                                                           Exhibit 23.1


                         CONSENT OF INDEPENDENT AUDITORS
                                        
                                        
    We consent to the reference to our firm under the caption "Experts" in 
the Registration Statement (Form S-3) and related Prospectus of Interleaf, 
Inc. for the registration of 5,592,000 shares of its common stock and to the 
incorporation by reference therein of our report dated June 16, 1997, with 
respect to the consolidated financial statements and schedule of Interleaf, 
Inc., included in its Annual Report (Form 10-K) for the year ended March 31, 
1997, filed with the Securities and Exchange Commission.

                                                     /s/ ERNST & YOUNG LLP

Boston, Massachusetts
November 26, 1997




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