eGroupWare demo
Citadel
OpenGroupware
phpGroupWare
Simple Groupware
NullLogic Groupware is a multi-user web-based groupware package designed for contact management and event scheduling, which includes additional features such as instant messaging, public forums, shared hyperlinks, file system, a web e-mail client, and a simple order processing system. (License: GNU GPL)
Zie ook:List of collaborative software
O3Spaces
“The O3Spaces Workplace Community Edition downloads are distributed 'as is' with a 10 user non-time limited license key. The O3Spaces Workplace Community Edition installers provide an easy set-up of a pre-configured and self-contained Workplace system. The Community Edition deployments are not intended for production use.”