Hijackthis

Homepage: http://www.merijn.org/programs.php#hijackthis

Download link: http://www.trendsecure.com/portal/en-US/threat_analytics/hijackthis.php

Operating Systems: Windows 95, 98, ME, NT, 2k, XP,Vista

Description: Hijackthis can finda all software that runs automatically at startup . i can check  registry, lsp, ini files, start up folder and browser settings. Very fast and efficient but also dangerous unless you really know what you’re doing.