Citadel is an advanced messaging and collaboration system for groupware and BBS applications. Users can connect to Citadel using any telnet, WWW, or client software.
Among the features supported are public and private message bases (rooms), electronic mail, real-time chat, paging, shared calendaring, address books, mailing lists, and more.
Unlike other collaboration servers, Citadel provides its own data stores and is therefore extremely easy to install; you don't have to "bring your own" email and database because they're built in.
The server is multithreaded and scalable. In addition, SMTP, IMAP, and POP3 servers are built-in for easy connection to Internet mail. Citadel is both robust and mature; it has been in production since 1987.
What's New in This Release: [ read full changelog ]
· New features include a greatly improved XMPP (Jabber) service for better compatibility with more instant messenger clients, a completely new bulletin board (forum) view that is greatly improved in both performance and features, a brand new multiuser chat facility redesigned for better access through a Web browser, and many bugfixes and performance enhancements.