avast! Professional Edition: antivirus & anti-spyware software for Windows

Complete virus protection for your desktop

avast! antivirus software represents complete virus protection, offering full desktop security including a resident shield with anti-spyware technology. It can be downloaded and used free of charge for a 60-day trial period. At the end of the trial period, a license key must be purchased to continue using the product, which will be then valid for a further 1, 2, or 3 years. Daily automatic updates ensure continous data protection against all types of malware and spyware.

ALWIL Software offers a special discount program for all avast! antivirus products for non-profit, charity, educational, health and government institutions. Please apply for any special discounts using this form.

All-inclusive, comprehensive protection: avast! 4 Professional Edition includes anti-spyware protection, certified by the West Coast Labs Checkmark process, to protect against the latest spyware threats and anti-rootkit detection based on the best-in class GMER technology, built into the scan engine.

Simple to use and fully automated: Automatic incremental updates provide real-time protection of your system, including web surfing. We've made avast! antivirus as simple to use as possible, while allowing full control of your computer's security.

Tried and Trusted: With over 80 million users of avast!, you can rest assured that you are using one of the most tried and trusted antivirus products in Windows security. avast! supports more MS Windows versions (from Windows 95 to Vista 64-bit) than any other anti-malware product.

Full technical description of avast! Professional Edition.

Awards and certifications