http://www.developer.com/market_research/article.php/396300/The-Forrester-Wave-Collaboration-Platforms-Q3-2009.htm
In Forrester's survey of collaboration platform vendors, the traditional vendors IBM, Microsoft and Novell offer the broadest functionality. All have invested heavily in their collaboration products in recent years: IBM Lotus in Quickr and Connections, Microsoft in SharePoint, and Novell in SiteScape. However, a number of challengers offer unique strengths. Strong performers include: Contenders include:
The Forrester Wave: Collaboration Platforms, Q3 2009
March 28, 2010