CPx86 (currently in Alpha development stages) will be a fully fledged IRC bot, multi-user BNC server, and an Automated Network protection bot. Currently, the SDK covers all needed aspects of IRCd, and is extremely stable and functional. For Linux/Windows
Sanvirc is a script for KVirc that includes funtions like: nick identification, autojoin, defense, atack, bots management, away system, etc.
At the moment works whis IRC-Hispano bots but is very easy to adapt to other servers.