We are proud to pronounce that per AV Comparatives website, which is an Independent Test of Anti-Virus Software, Avast Free Antivirus takes the first place in Consumer categories and gains 3 stars rating.

We are proud to pronounce that per AV Comparatives website, which is an Independent Test of Anti-Virus Software, Avast Free Antivirus takes the first place in Consumer categories and gains 3 stars rating.
The testing is based on all platforms and it includes test methods such as Real-World Protection test, Malware Protection test, Performance test, File Detection test, Malware Removal, Heuristic/Behavioral Tests, Mobile Security reviews, Mac Security Reviews, Business Security Test and Reviews, Parental Control Reviews and PUA tests.

http://www.av-comparatives.org/vendors/avast/