Wraith is an open source IRC bot written in C++. It has been in development since late 2003. It is based on Eggdrop 1.6.12 but has since evolved into something much different at its core.
IRC Daemon based on UnrealIRCd with added features and enhancements, including features from Bahamut, UltimateIRCd, Hybrid and other IRCd software.
CABAL == C++ Automatic Bot As a Lifeform. CABAL is just an IRC bot with a lot of features.
InspIRCd is no longer managed though SourceForge. For information and the latest version, please check out: http://www.inspircd.org
e2ircd: escii's 2nd edition irc daemon, now with 30% less callories! (is a) C++ object orientated ircd that aims to be flexible, robust and unbreakable. With opers having 'godlike' controll over the server, and features a extended irc protocol )