avast! software provides complete virus protection for your computer. Antivirus engine is complemented by anti spyware, firewall and antispam modules to protect you against phishing schemes, identity theft and internet distributed web viruses. Automatic updates for greater user convenience and safety.
Top user ratings among free antivirus software. The new avast! includes a spyware detection engine. To protect you from identity theft as well as viruses. avast! Pro Antivirus better protection during web surfing. Full featured antivirus software. Better than our free antivirus, especially for web surfing, but without the firewall and antispam included in avast! Internet Security. Also if you wish to customize your security, this is the recommended software.
avast! Internet Security
Active internet users need greater protection for themselves as they shop and bank on line. To secure against threats from infected web sites and the growing risk of identity theft, avast Internet security provides you with continuous protection from its layers of antivirus, anti spyware, anti rootkit protection, firewall and antispam.

avast! Pro Antivirus
Full featured antivirus software. Better than our free antivirus, especially for web surfing, but without the firewall and antispam included in avast! Internet Security. Also if you wish to customize your security, this is the recommended software.

Whats new in avast 6
Major changes / improvements:
AutoSandbox suspect the program will be further work in isolation
Avast! WebRep browser plugin for the site rating reputation, a combination of data from our laboratory, the virus and the community vote
Scenario Shield now even free AV
Blocking the site is now even free AV
SafeZone special virtual field for sensitive operations (for example, security of online banking) (paid only products)
Recovery Team to factory settings (Settings > Troubleshooting)
Automatic actions in the boot scan
A new method of compression in the installer makes the installation of approximately 20 less.
Scenario Shield now functional even with IE8/IE9 protected mode
Sidebar Gadget
Improved stability and compatibility of the behavior of the shield
Improvements to the Avast! sandbox