avast! 4 Professional Edition is a collection of award winning, high-end technologies that work in perfect synergy, having one common goal: to protect your system and valuable data against computer viruses. It represents a best-in-class solution for any Windows-based workstation. This page demonstrates its most important features and provides links to further resources.

Features overview
Antivirus kernel	Automatic updates
Simple User Interface	PUSH updates
Enhanced User Interface	Virus Chest
Resident protection	System integration
Script blocker	Command-line scanner
P2P and IM Shields	Integrated Virus Cleaner
Network Shield	Support for 64-bit Windows
Web Shield	Internationalization