Code Security - This program takes a random screenshot at a random time of a person's game and then the person has to send the screenshot to you. This way you can tell if they are cheating or not. (The screenshot cannot be faked, as it prints a random number on the screen.)
http://web.interware.hu/kirkie/code/codesecurity.zip
Delator 2.0 - This program scans for bright skins and can detect wallhacks, aimbots, nofog, 3rd person, and modified game files. It also manages private slots as well.
http://www.uv.es/~astracan/delator20.zip