OpenGroupware

See also: Groupware | Kroupware

Hompepage: http://www.opengroupware.org/

Taken in part from the mission (http://www.opengroupware.org/en/about/mission.html):

A project to create an Exchange Server replacement, also on the server level, to interface with a variety of different clients and browsers. Most average users will never actually install OpenGroupware but will connect to its server to interface with their colleages.

Related Projects:

TakeDown.NET -> “OpenGroupware