avast! Free Antivirus represents the best free antivirus protection currently available on the market. This edition is FREE OF CHARGE for non-commercial & home use. Its features include: Anti-spyware built-in Web Shield Anti-rootkit built-in Automatic updates Strong self-protection Virus Chest Antivirus kernel System integration Simple User Interface Integrated Virus Cleaner Resident protection Support for 64-bit Windows P2P and IM Shields Internationalization Network Shield.