Dotjosh Open Source
Easily add your friends, then see which servers they're on.
Create, modify and edit the VGUI command menus available in Counter-Strike.
ModernRcon is a great choice for remote controlling a game server.
This rich application will help you manage your servers in a userfriendly way.
It allows server owners to customize the gameplay in Battlefield 3 game.
AGRcon is an amazing utility that provides easy remote control options.