Bots serve a variety of functions but their main purpose is to act similar to human players instead of just normal players controlled by the computer. Below is list of bot resources and a few of the more popular bots for the most popular online shooter in the world Half-Life.
JoeBOT – An excellent bot for Counter-Strike.
HPB Bot – One of the top ranked Half-Life bots on the Internet.
Odd Bot – Simple bot that is best used for Team Fortress.
Akimbot – One of the best bots for Half-Life multiplayer mods.