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Email, calendars, contacts, instant messaging, BBS/forums, AJAX web frontend, and much more.

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Features

Citadel is a turnkey open-source solution for email and collaboration. One simple installation delivers a multitude of powerful features, including:

* email
* calendaring/scheduling
* address books
* bulletin boards
* mailing list server
* instant messaging
* multiple domain support
* modern AJAX-style web interface

Users love Citadel because it's software that helps them work together and stay in touch without calling attention to itself. System administrators love Citadel because it installs in minutes without the need to manually integrate all the different components together.The key to Citadel's versatility is its unique architecture. A Citadel system is made up of containers called “rooms.” A room may be used as an email folder, a discussion forum, a real-time chat, a mailing list, a calendar, an address book, an RSS reader … sometimes a combination of any of the above, and certainly any other uses which could be added in the future. You can also distribute a Citadel installation across multiple servers, allowing unlimited horizontal scalability.

With that in mind, Citadel excels at applications such as:

* E-mail and groupware (shared calendaring, etc.)
* Bulletin Board System (BBS)
* Online discussion forums / chat rooms

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 simultaneously.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.

Technical Specifications

Operating System:

Linux - CentOS 4.4

VMware Tools installed: Yes

Size: 483MB

Allocated Memory (RAM): 256

Applications Installed:

Citadel v7.30 with WebCit 7.30 (see http://www.citadel.org for more information). SpamAssassin and ClamAV are also installed and pre-integrated with the Citadel system in this virtual appliance.

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