Software License Agreement

Exhibit 10.1

October 10, 2005

President
Bisys, Inc.
90 Park Avenue
New York, NY 10016

Ladies and Gentlemen:

Reference is made to that certain Software License Agreement effective as of September 1, 2003 by and between Open Solutions Inc. (“ OSI ”) and BISYS, Inc. (“ BISYS ”), as amended (the “ Agreement ”). OSI and BISYS hereby agree as follows:

1. Any defined terms used in this letter shall have the meaning ascribed to such defined term in the Agreement.

2. The date by which BISYS is entitled to terminate the limited non-compete obligations of OSI for a region pursuant to Section 4(b) of the Agreement, and thereby automatically terminate OSI’s Most Favored Customer obligations and BISYS’ Minimum Fee Payment obligations for such region (subject to the 9 month continuation provision of Section 4(b)(4)), among other things, is hereby extended from October 10, 2005 to January 31, 2006 (“ Extension Peri