Antivirus is a software needed for every windows user to prevent infection from trojans or worms. Here i have listed some personal Free Antivirus software for your PC and Laptop.

Avast Home Edition – Avast home edition is a free anti-virus for home users which is for non-commercial purpose. Avast Home edition supports all Windows Versions.

AVG Free Edition – AVG AVG Free edition Protects against viruses and spyware and compatible to vista and xp

Avira AntiVir – Avira AntiVir Avira Antivir protects against viruses, worms and Trojans. It Monitors every action done in the pc. It repair,delete, block, rename and quarantine programs or files.

ClamWin – ClamWin Free Anti-virus for Microsoft Windows 98/Me/2000/XP/2003 and Vista. ClamWin Free Antivirus comes with an easy installer and open source code.

Comodo – Comodo eliminates Viruses, Worms and Trojans from desktops and networks.
Comodo Internet Security contains Antivirus,Firewall,Proactive Security

PC Tools Anti-Virus - PC Tools Anti-Virus is a Powerful FREE Software which Scans and remove malicious Virus, worm, Trojans. It has Smart Updates and IntelliGuard Protection.