avast! 4 Professional antivirus, anti-spyware & anti-rootkit for Windows

The professional solution to great protection

avast! 4 Professional Edition represents the best antivirus protection available and 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, which will be valid for a further 1, 2, or 3 years. avast! 4 Professional Edition comes with anti-spyware, anti-rootkit and strong self-protection built-in. It is designed to protect your valuable data and programs, as well as keep itself up-to-date and has the kind of built-in features that many vendors charge for additionally, or don't include at all.

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 security.

Tried and Trusted - With over 60 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.

Please see here for a full technical description of avast! Professional.