Citadel Reviews

Citadel Description

Email, collaboration, groupware and content management can be set up in minutes on your own hardware or in the cloud. Citadel's exclusive room-based architectural design makes it easy, versatile and powerful. No other platform combines so many features with such ease using this familiar and consistent analogy. Citadel is open source software that uses the GNU General Public License. It's not some crippled version of an expensive "enterprise edition". All the software available here is free and of the highest quality.