This antivirus software currently can detect more than 63,500 viruses and trojans, many of which it can disinfect.

DOS and Linux versions are distributed as freeware for private user. You can use it if your Windows Antivirus fail to function (infected by viruses).

Web Site
http://www.f-prot.com/f-prot/

Download
http://www.f-prot.com/f-prot/download/