Avira AntiVir Personal offers premium antivirus protection for no cost to home users. Given the stellar protection AntiVir offers, it's no wonder 62% of readers declared Avira AntiVir Personal their favorite free antivirus.
Avira AntiVir Personal: 62%
avast! antivirus: 13%
Microsoft Security Essentials: 10%
AVG Free: 9%
Panda Cloud Antivirus: 6%