Launching Next has discovered 2 enterprise social startups.
SharePoint 2010 Enterprise Social Computing - NewsGator
NewsGatorÕs Social Networking solutions help you overcome business challenges by providing an integrated social computing platform
Yammer : The Enterprise Social Network
Yammer is a leading enterprise social network used by more than 200,000 companies worldwide, including 85% of the Fortune 500, to get work done smarter and faster. Sign Up Today.