AGREEMENT OF JOINT FILING

Exhibit 1

AGREEMENT OF JOINT FILING

Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13D need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Artisoft, Inc.

EXECUTED this 17th day of October, 2005.

M/C VENTURE PARTNERS V, L.P.
By:		M/C VP V, LLC
By:		/s/ Xxxx X. Xxxx
		Xxxx X. Xxxx, Manager
M/C VP V, LLC
By:		/s/ Xxxx X. Xxxx
		Xxxx X. Xxxx, Manager
M/C VENTURE INVESTORS, LLC
By:		/s/ Xxxx X. Xxxx
		Xxxx X. Xxxx, Manager
CHESTNUT VENTURE PARTNERS, L.P.
By:		CHESTNUT STREET PARTNERS, INC.
By:		/s/ Xxxx X. Xxxx
		Xxxx X. Xxxx, as Attorney in Fact
CHESTNUT STREET PARTNERS, INC.
By:		/s/ Xxxx X. Xxxx
		Xxxx X. Xxxx, as Attorney in Fact