IDC also ranked the top vendors from a revenue perspective in a different study, “Worldwide Enterprise Social Software 2011 Vendor Shares.” Tops by far was IBM with $105.4 million, followed by Jive Software ($65.3 million), Communispace ($60 million), Telligent ($42.7 million), and Socialtext ($34.5 million). Rounding out the top 10 were Mzinga, Lithium, Yammer, NewsGator, and VMware. I guess Microsoft was feeling left out so they picked up Yammer. It is also smart of IDC to not count SharePoint as social software.

Bill Ives on the market numbers from IDC. Guess which two statements I like most …