Chat Everywhere gives you the possibility to easily put a real-time discussion forum on your website. It allows extended (Irc-like) commands, several levels of hierarchy and an easy to modify configuration file.
The goal of this project is to provide webmasters with a simple to use, but very configurable, chat zone on their site. The requirements on the client side are as low as a java enabled browser (most of them are). The server is very light (coded in standard, portable C), and can run on very small servers. It does not require admin (root) rights.
It features :
various channel-management functions (kick, ban, etc...)
hierarchy levels (from 0 to 9)
password nick protection
simple config file (a la Apache)
easy integrated java applet with a configurable look
support for remote server (signed applet)
and... it is free and under GPL.