Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more.
Self-host this app on a heavily discounted RackNerd VPS for $0.99/mo only!
Meet the Citadel System.
Easy to install. Easy to use. 100% open source. No compromises.
Email, collaboration, groupware, and content management -
up and running in minutes, on your own hardware or in the cloud.
Citadel is easy, versatile, and powerful, thanks to its exclusive "rooms" based architecture. No other platform seamlessly combines so many different features using this familiar and consistent metaphor.
Citadel is 100% open source software using the GNU General Public License. It's not a crippled, cut-down version of some expensive "enterprise" edition. The software you download here is the very best available, and it's all free software.
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