xIRCd
xIRCd is an IRCd (Internet Relay Chat daemon) built in java. It is still in development, and will be for a month or so more before there is a solid and compiled release. You can still access the source repository and compile from there (all version submitted are tested prior to submission). Why xIRCd I hear you ask? Why not! It runs on any OS that has java! This has it's own site on a project resources site, you can view it here