avast! Free Antivirus 8

avast! Free Antivirus 8 Review and Free Download

AVAST Software's avast! Free Antivirus 8 most certainly deserves to be on any list of the best free antivirus
programs. avast! Free Antivirus has fully functioning antivirus and antispyware engines protecting your PC from threats from the Internet, your files, emails, and even instant messages.
avast! Free Antivirus 8 supports Windows 8, Windows 7, Windows Vista, and Windows XP.
One big reason I included avast! Free Antivirus 8 as a best free antivirus program is because of its "heuristics engine" which can detect previously unknown viruses and other malware. I also like the fact that AVAST has been making this antivirus product since 1988 and is often cited as the most installed antivirus product.