Software Catagory :

Avast	Antivirus Free
AVG Antivirus Free	Antivirus Free
Avira Free Antivirus	Antivirus Free
Bitdedender	Antivirus Free
Clamwin Antivirus	Antivirus Free - Open Source
Emsisoft Emergency Kit	Programs that can be used without installation to scan and clean infected computers
Kaspersky	Antivirus 30 Day Trial
McAfee	Antivirus 30 Day Trial
Microsoft Security Essentials	Antivirus Free