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
* wiki
* multiple domain support
* a powerful web interface
Features:
*Email, calendaring, address books, bulletin boards, instant messaging, and more … all in one tightly integrated server package. Unlike other open source GroupWare systems, all of Citadel's data stores are built-in. All that tedious mucking about with dependencies and config files is a thing of the past.
*High-performance, multiprotocol, multithreaded server engine
*Web Browser, telnet/SSH, local client software accessible
*Standards-compliant e-mail built in: IMAP, POP3, ESMTP
*Group calendaring and scheduling (GroupDAV and Kolab-1 compatible)
*Built-in listserv (mailing list server)
