AVG Anti-Virus Free Edition is for private, non-commercial, single computer use only. It protects against viruses and spyware. Its LinkScanner Active Surf-Shield protects in real time against poisoned web pages while you’re surfing. You can download this antivirus from here.

avast! antivirus Home Edition

avast! Home Edition – Free Antivirus represents the best FREE antivirus protection currently available on the market. This edition is FREE OF CHARGE for non-commercial & home use only. FREE avast! antivirus Home Edition includes ANTI-SPYWARE protection, certified by the West Coast Labs Checkmark process, and ANTI-ROOTKIT detection based on the best-in class GMER technology. You can download this antivirus from here.