avast! Professional Edition is a complete antivirus package for small office home office use. It includes an on-demand scanner to scan files or directories as needed as well as an on-access scanner for automatic scanning of all files being opened, read and written. In addition, a behavior blocker monitors for dangerous actions.

Memory requirements for the engine have been cut in half and scanning is 40 percent faster, saving both time and computer resources. Complete rootkit protection includes real-time detection to ward off initial installation, on-demand scanning and boot-time scans. The user friendly 5.0 has a new interface with easy-to-adjust settings, a context-sensitive help menu and graphs showing ongoing protection activities. Users can set the time and conditions for complete scans, with avast even waking up their computer from hibernation for midnight scans before putting it back to bed.

The license of this software is Free Trial Software, the price is $39.95, you can free download and get a free trial.