For private server enthusiasts, god minded jerk, or simply a GM botbuster. 

https://github.com/mangos/mangos - World of Warcraft

https://github.com/blueboy/mangos - World of Warcraft + bot

http://www.aion-lightning.com/ - AION Online

http://forum.evemu.org/ - Eve Online

http://www.l2jserver.com/ - Lineage 2 Online