The Genebot (generic bot) is a project for a fully working true client base for bot authors to build upon primarilly for the QuakeWorld server. All you need to do here is download the source code and start adding onto the existing bot AI.
This mod contains class systems, spell casting, and money systems, as well as bots.
Great deathmatch bot to play on any level.
MaNiAcBot Bots for Quake
A bot designed for easy integration into QuakeC mods.