Exhibit 10.35

Consent and Waiver Agreement

February 9, 2006

This Consent, Waiver and Release Agreement (this “Agreement”) is made and
entered into as of the 9th day of February, 2006 among Artisoft, Inc., a
Delaware corporation (the “Company”), and each of the undersigned holders
(collectively, the “Stockholders”) of shares of the Company’s common stock,
$0.01 par value per share (the “Common Stock”), and warrants (the “Warrants”) to
purchase Common Stock who are parties to any of the Prior Agreements or the 2004
Agreement (as such terms are defined below) (such Stockholders holding a
sufficient number of shares of Common Stock and interests in the Warrants to
take the actions provided for herein).

WHEREAS, the Company desires to enter into a purchase agreement substantially in
the form attached hereto as Exhibit A (the “2006 Purchase Agreement”) with
certain investors (the “Investors”), including certain Stockholders, relating to
the issuance and sale of the Company’s Series D Convertible Preferred Stock (the
“Series D Preferred Stock”) and warrants to purchase shares of the Company’s
Common Stock (the “2006 Warrants”);

WHEREAS, the Company and the Stockholders are parties to, as applicable,
(i) that certain Stock Purchase Agreement, dated September 28, 2004 (the “2004
Agreement”), and (ii) that certain Stock Purchase Agreement, dated September 28,
2005 (the “2005 Agreement”);

WHEREAS, each of the Stockholders has separately entered into a Voting
Agreement, dated as of September 28, 2005 (each, a “Voting Agreement”) with the
Company;

WHEREAS, the Stockholders desire that the Company and the Investors enter into
the 2006 Purchase Agreement; and

WHEREAS, the parties hereto desire to make certain consents and waivers in
connection with the 2006 Purchase Agreement.

NOW, THEREFORE, in consideration of the foregoing and the promises and covenants
set forth herein and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the parties hereto consent and
agree as follows:

1. Consent to 2006 Purchase Agreement. The Stockholders hereby consent to the
2006 Purchase Agreement and the transactions contemplated thereby, including
without limitation, the issuance and sale of the Series D Preferred Stock and
the 2006 Warrants pursuant thereto.

2. Waiver of Provisions of the 2005 Agreement. The Stockholders that are parties
to the 2005 Agreement, on behalf of all of the parties to the 2005 Agreement,
hereby waive Sections 3.4 [Right of First Refusal] and 4.2 [Issuance of Equity
Securities], solely for purposes of effecting the transactions contemplated by
the 2006 Purchase Agreement.

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3. Waiver of Provisions of the 2004 Agreement. The Stockholders that are parties
to the 2004 Agreement, on behalf of all of the parties to the 2004 Agreement,
hereby waive Sections 3.4 [Right of First Refusal] and 4.2 [Issuance of Equity
Securities], solely for purposes of effecting the transactions contemplated by
the 2006 Purchase Agreement.

4. Consent to Amendment of Voting Agreements. Each Stockholder hereby consents
to the amendment of each Voting Agreement as provided in each Amendment No. 1 to
Voting Agreement of even date herewith, the form of which is attached hereto as
Exhibit B.

5. Counterparts. This Agreement may be executed in two or more counterparts,
each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument. This Agreement may be executed via
facsimile, which shall be deemed an original.

6. Severability. If any provision of this Agreement shall be declared void or
unenforceable by any judicial or administrative authority, the validity or
enforceability of any other provision and of the entire Agreement shall not be
affected.

7. Enforceability. Upon execution of this Agreement by the undersigned
Stockholders, the validity of any waiver, consent or amendment made hereunder
shall be unaffected by the failure of any one or more stockholders of the
Company to execute this Agreement.

8. Governing Law. This Agreement shall be governed by and construed and enforced
in accordance with the laws of the State of New York.

9. Confidentiality. Each of the Stockholders hereby agrees, that except as
required by law, to hold in confidence the 2006 Purchase Agreement, this
Agreement, all of the terms thereof and all of the transactions contemplated
thereby and hereby until such time as the material terms thereof and hereof are
publicly disclosed by the Company (which the Company agrees to do in compliance
with applicable law).

[Signature pages follow]

 

2

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IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the
date first above written.

 

COMPANY:

ARTISOFT, INC.

By:

 

/s/ KEN CLINEBELL                                             

Name: Ken Clinebell

Title: CFO-Interim

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STOCKHOLDERS:

M/C VENTURE PARTNERS V, L.P.

By M/C VP V, LLC, its general partner

By:

 

/s/ JOHN W. WATKINS

   

Name:

     

Title:

     

M/C VENTURE INVESTORS, LLC

By:

 

/s/ JOHN W. WATKINS

   

Name:

     

Title:

     

CHESTNUT VENTURE PARTNERS, L.P.

By Chestnut Street Partners, Inc., its general partner

By:

 

/s/ JOHN W. WATKINS

   

Name:

     

Title:

     

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SPECIAL SITUATIONS FUND III, L.P.

    SPECIAL SITUATIONS CAYMAN FUND, L.P. By AWM Investment Company, Inc., its
general partner     By AWM Investment Company, Inc., its general partner

By:

 

/s/ DAVID M. GREENHOUSE

   

By:

 

/s/ DAVID M. GREENHOUSE

Name:

        

Name:

    

Title:

        

Title:

     SPECIAL SITUATIONS PRIVATE EQUITY FUND, L.P.     SPECIAL SITUATIONS
TECHNOLOGY By MG Advisers L.L.C., its general partner     By SST Advisers,
L.L.C., its general partner

By:

 

/s/ DAVID M. GREENHOUSE

   

By:

 

/s/ DAVID M. GREENHOUSE

Name:

        

Name:

    

Title:

        

Title:

     SPECIAL SITUATIONS TECHNOLOGY FUND II, L.P.       By SST Advisers, L.L.C.,
its general partner      

By:

 

/s/ DAVID M. GREENHOUSE

     

Name:

          

Title:

          

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PATHFINDER VENTURES III, L.L.C. By RRS Investments II, L.L.C., its Manager By
Stolworthy Revocable Trust, its Manager

By:

 

/s/ R. RANDY STOLWORTHY

        R. Randy Stolworthy, Trustee

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CORAL’S MOMENTUM FUND,
LIMITED PARTNERSHIP By Coral’s Momentum Fund Management
Partners, LLC, its General Partner

By:

 

/s/ TODD ORTBERG

Name:

 

Todd Ortberg

Title:

 

Managing Director

By:

 

/s/ MARK C. HEADRICK

Name:

 

Mark C. Headrick

Title:

 

Managing Director