[frik]

Microsoft bought Groove in 2005 and renamed the client to Sharepoint Workspace 2010. It was not that great and it got canned.

http://de.wikipedia.org/wiki/Microsoft_Groove

[TheRealDunkirk]

Well I never used it after Microsoft put it through their software "enterprizer." I seem to remember reading a product announcement when they released it, and understood that they had nerfed it pretty badly.