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                                                                   Exhibit 10.16


CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE  SECURITIES AND
EXCHANGE COMMISSION. THE TERM "[REDACT]" DENOTES  SUCH OMISSIONS.

                                  FIRST AMENDMENT
                                        TO
                        EXCLUSIVE SOFTWARE LICENSE AGREEMENT

     This First Amendment dated as of May 22, 1997 (this "Amendment") amends the
Exclusive Software License Agreement (the "Agreement") dated as of June 1, 1995
by and between Cornell Research Foundation, a New York corporation
("FOUNDATION"), and White Pine Software, Inc., a Delaware corporation
("LICENSEE").

     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.   Section 1.6 of the Agreement is hereby deleted in its entirety and replaced
with the following:

     "'License Year' shall mean (i) the period beginning on the Effective
     Date and ending on November 30, 1996 and (ii) each twelve (12) month
     period beginning on January 1 of a year during the term of this
     Agreement, commencing with the twelve (12) month period beginning on
     January 1, 1997."

In consideration of the above modification, LICENSEE will pay FOUNDATION $16,666
within five business days after the signing of this Amendment.

2.   LICENSEE agrees that all Licensed Commercial Products will be marked as
follows: "CU-SeeMe is a registered trademark of Cornell Research Foundation,
Inc."  In addition, LICENSEE acknowledges and agrees that the Licensed Trademark
is the property of FOUNDATION and that LICENSEE has rights in the Licensed
Trademark only to the extent set forth in the Agreement.

3.   FOUNDATION shall be relieved of its obligation to provide any of the
services contemplated by Section 4.2  of the Agreement and Exhibit C to the
Agreement.  As a result, Section 5.5 of the Agreement no longer has any force or
effect and is hereby deleted in its entirety.

4.   Section 5.2 (A) of the Agreement is hereby deleted in its entirety and
replaced with the following:

     "A.  Licensee Products.  LICENSEE agrees to pay, for each License
     Year, a royalty of [Redact] of the Net Sales Price actually collected
     by LICENSEE from the sale of Licensed Commercial Products.  For
     purposes of this Section 5.2(A) only, Net Sales Price shall exclude
     the amount of the LICENSEE's list price for any third-party technology
     incorporated in or bundled with any Meeting Point/Reflector Server
     included in such Licensed Commercial Products, provided that (i)
     LICENSEE has established a separate list price for such third-party
     technology and such list price is in effect at the time of the sale of
     such Meeting Point/Reflector Server and (ii) LICENSEE


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CONFIDENTIAL MATERIAL OMITTED AND FILED SEPARATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION.  THE TERM "[REDACT]" DENOTES SUCH OMISSIONS

     has paid (or is obligated to pay) to any third-party a royalty in an amount
     equal to at least [Redact] of the Net Sales Price of such Meeting
     Point/Reflector Server.


5.   Sections 5.2(B), (C) and (D) are hereby deleted in their entirety and
replaced with the following:

     "C.  Minimum Royalty Per Copy.

     1.   LICENSEE agrees to pay to FOUNDATION, for each License Year, an
     additional royalty equal to the amount, if any, by which the royalty
     with respect to any sale of a Meeting Point/Reflector Server
     calculated pursuant to Section 5.2(A) is less than the greater of
     [Redact] per unit and [Redact] of the list price of such Meeting
     Point/Reflector Server.

     2.   Other than the minimum royalty per copy set forth in Section
     5.2(C)(1), LICENSEE shall not pay any minimum royalty per copy for
     Licensed Commercial Products."

     "D. Minimum Annual Royalty.

     1.  LICENSEE agrees to pay to FOUNDATION a minimum royalty of [Redact]
     for the twelve month period beginning January 1, 1997 and [Redact] for
     each subsequent year in which this Agreement is in effect.  To effect
     the minimum royalty, LICENSEE shall pay an amount equal to the amount,
     if any, by which such minimum royalty for a License Year exceeds the
     sum of the royalties payable under Section 5.2(A) and (C).  In the
     final License Year, the minimum royalty payments will be prorated for
     the fraction of the License Year the Agreement was in existence.

     2.  There will be no sublicensing minimum royalties, but LICENSEE
     agrees to use its reasonable efforts to sublicense to third parties on
     a reasonable business basis."

 6.  LICENSEE shall prepay a total of $1,000,000 as an advance against royalties
and/or minimum royalties payable under the Agreement. LICENSEE and FOUNDATION
hereby acknowledge and agree that LICENSEE has already prepaid $100,000  of such
advance and that the balance due to FOUNDATION from LICENSEE is $900,000. Such
amount will be paid by LICENSEE to FOUNDATION within five business days after
the date of this Amendment.

7.   LICENSEE shall issue and deliver to FOUNDATION, within five business days
after the date of this Amendment, a stock warrant to purchase 150,000 shares of
LICENSEE's Common Stock at an exercise price of $6.00 per share.  The stock
warrant will contain a cashless exercise provision and will be in a form agreed
upon by the parties.  FOUNDATION agrees that it will not exercise more than
50,000 shares covered by the warrant during any period of 90 consecutive days.

8.   The third sentence of Section 5.6 is hereby deleted and replaced with the
following:

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CONFIDENTIAL MATERIAL OMMITTED AND FILED SEPAREATELY WITH THE SECURITIES AND
EXCHANGE COMMISSION.  THE TERM "[REDACT]" DENOTES SUCH OMISSIONS.


     "LICENSEE shall make quarterly royalty reports and payments within 30
     days after the end of a calendar quarter."

     In addition, the following sentence is added after the second paragraph of
     Section 5.6:

     "FOUNDATION has the right from time to time during ordinary business
     hours and no more than  two times every calendar year to have its
     representative speak with the members of the Audit Committee of
     LICENSEE's Board of Directors for the purpose of obtaining information
     to support or confirm financial information provided to FOUNDATION by
     LICENSEE's management in connection with the Agreement.  FOUNDATION
     acknowledges and agrees that it does not have the right to receive any
     financial projections or other information that has not been publicly
     disclosed."

9.   Section 9.1 is hereby modified to delete the phrase "for an initial term of
three (3) years and six (6) months" and to replace it with "until December 31,
2000."

10.  Both parties acknowledge and agree that, as of the date hereof, neither
party has breached or violated, or is in breach or violation of, any term or
provision of the Agreement.

11.  Except as amended by this Amendment, the Agreement shall remain in effect
in accordance with its terms. Except as provided by Sections 1 and 10 of this
Amendment, the provisions of this Amendment shall take effect as of the date
hereof and shall not be retroactive to the Effective Date.

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

CORNELL RESEARCH FOUNDATION, INC.       WHITE PINE SOFTWARE, INC.



/s/ H. Walter Haeussler                 /s/ Howard R. Berke
------------------------------          ------------------------------
H. Walter Haeussler                     Howard R. Berke
President, Director Patents &           President and Chief Executive Officer
Technology Marketing

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