Avast 4 Professional Edition is a complete ICSA & Checkmark certified antivirus, Checkmark certified anti-spyware & anti-rootkit software package for corporate and advanced home use. avast Professional Edition includes an on demand scanner with two user interfaces, a skinnable simple interface: just select what you want to scan and in which way and press the play button, an enhanced user interface: Outlook like UI allows users to set any feature of Avast, prepare and run tasks, store and check task results, on access scanner: special providers to protect: most available e-mail clients, instant messaging: ICQ or Miranda, network traffic: lightweight firewall, P2P protection for Kazaa, BitTorrent, Web shield: all HTTP traffic, script blocker. avast Professional Edition is available in 32 languages. Small, true incremental, updates are downloaded and installed automatically. Version 4.8.1169 is complete anti-malware protection.