Exhibit 2.1 AMENDMENT TO AGREEMENT AND PLAN OF MERGER This Amendment to Agreement and Plan of Merger (the "AMENDMENT") is made this 10th day of September, 2001 by and among divine, inc., a Delaware corporation ("PARENT"), DI1 Acquisition Company, a...Agreement and Plan of Merger • September 17th, 2001 • Open Market Inc • Services-prepackaged software
