Free virus protection and optimization
A free and safe companion: Avast Free Antivirus
Free and comprehensive protection suite
Free and simple antivirus software from Microsoft
AIM Fix
Removes all known AIM viruses
HitmanPro
Think you've got a virus? Get a second opinion
VirusTotal Uploader
Downloadable antivirus tool from VirusTotal
Panda Dome Essential
Reliable security software suite