AVG Anti-Virus - The best anti-virus! AVG Anti-Virus 7.5 for Windows

OS Support :Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003, Windows Vista

Detect and eliminate viruses, get free protection for home users.

OS Support :Win98,WinME,WinNT 4.x,Windows2000,WinXP

Norton AntiVirus - The most well known anti virus system.

OS Support :Windows2000,WinXP,Windows2003,Unix,Linux,Linux Open Source,MS-DOS,OS/2,OS/2 Warp,OS/2 Warp 4,Mac PPC,Mac OS X,Mac

Detect and eliminate Worm.Sober.J/P/Y and W32.Stanit.A, Worm/NetSky.P worms.

OS Support :Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003

A free tool that removes the most common viruses & worms from your computer.

OS Support :Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003

Tool for getting information on running processes in your Windows.

OS Support :"Win98","Windows2000","WinXP"

This utility is developed to prevent virus activity before any changes are made.

OS Support :WinNT 4.x,Windows2000,WinXP,Windows2003,Windows Vista Starter,Windows Vista Home Basic,Windows Vista Home Premium,Windows Vista Business,Windows Vista Enterprise,Windows Vista Ultimate,Windows Vista Home Basic x64,Windows Vista Home Premium x64,Windows Vista Business x64,Windows Vista Enterprise x64,Windows Vista Ultimate x64

Powerful, secure POP/SMTP/IMAP/HTTP mail server for Windows

OS Support :Windows2000,WinXP,Windows2003

Comodo AntiVirus - Automatically eliminates all known Viruses, Worms and Trojan

OS Support :Windows2000,WinXP

Mail server with anti-virus & anti-spam, built-in firewall with NAT and proxy.

OS Support :Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003