avast! 4 scans and protects your computers against viruses, worms and Trojans on

OS Support :Windows XP, Windows Vista,windows 2000, WIndows 98, ME

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

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

Scans your computer for malicious software: Trojan Horse, Dialer, Worms, Spyware

OS Support :Win98,WinME,Windows2000,WinXP,Windows2003

FREE anti virus scanner to cure your computer from viruses and malware

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

Complete network vulnerability scanning, patch management and auditing solution.

OS Support :Windows2000,WinXP,Windows2003

DOS based Malware Removal Tool suitable for use on a number of operating systems

OS Support :Win 3.1x,Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003,MS-DOS,OS/2,OS/2 Warp,OS/2 Warp 4

An open source command line anti-virus scanner for Windows

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

An incredibly fast IP scanner!

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

DOS based Malware Removal Tool suitable for use on a number of operating systems

OS Support :Win 3.1x,Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003,MS-DOS,OS/2,OS/2 Warp,OS/2 Warp 4

Advanced LAN Scanner is a fast and easy-to-use multithreaded LAN scanner.

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