Citadel is a complete and feature-rich open source groupware platform.
* Email, calendaring/scheduling, address books
* Bulletin boards, mailing list server, instant messaging
* Multiple domain support
* An intuitive, attractive AJAX-style web interface
The Citadel system is extremely versatile. It provides numerous front ends to
present to users, such as a text-based interface, an AJAX-style web interface,
and many popular PIM clients using SMTP/POP/IMAP. All of these can be used
It's also extremely scalable. Not only can a well-equipped Citadel server
support a large number of concurrent users, but you can also build
a distributed network of Citadel nodes that share rooms and their content.
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Install this software package
If the package is available for the distribution you are currently using on your computer then install the software by clicking on… Install citadel-server