Joseph Edwards from WindowsIT Pro has written a good article on Rootkit Removal Tools.
He has produce the following list of tools :
- BitDefender RootkitUncover beta, from SoftWin
- DarkSpy, from DarkSpy Security Group
- F-Secure BlackLight
- GMER, from an unknown independent Polish developer
- Helios, from MIEL e-Security
- IceSword, by Xfocus Team
- RKDetector, by Miguel Tarasco Acuna
- RootKit Hook Analyzer, from Resplendence Software Projects
- RootkitRevealer, from Sysinternals
- Rootkit Unhooker, from UG North
- Sophos Anti-Rootkit
- System Virginity Verifier, FLISTER, and KLISTER, by Joanna Rutkowska
- UnHackMe, from Greatis Software
To get info on each tool you must read the article.