avast! 4 Professional Edition is a complete ICSA certified antivirus package for business and office use - from SOHO to largest corporations. avast! 4 obtained multiple VB100% awards in Virus Bulletin comparative reviews under Microsoft Windows.

avast! 4 scans and protects your computers against viruses, worms and Trojans on any PC running Microsoft Windows workstation OS.

avast! 4 Professional Edition includes the following components:

• On Demand Scanner - with two user interfaces:
• Windows like or Skinnable Simple Interface - just select what do you want to scan in which way and press the Play button
• Enhanced User Interface - Outlook like UI allows user to set any feature of avast!, prepare and run tasks, store and check task's results
• On Access Scanner - resident scanning of all files being opened, read and written and behavior blocker monitoring dangerous actions of viruses or even users themself
• E-mail scanner easily integrates with most mail clients and it checks both incoming and outgoing mails, it provides heuristic analysis of mail content to protect against new Worms, it supports multiple SMTP servers
• Instant messaging protection - checks communication over MSN Messenger, ICQ, mIRC, Yahoo Messenger, AIM, Trillian etc.
• P2P protection - scans all files exchanged over Kazaa, Kazaa Lite, Direct Connect, DC++, WinMX etc.
• Network Shield - analyses all network traffic and scans it for malicious contents (Intenet Worms as Sasser, Blaster, SQL Slammer etc). It can be also taken as a lightweight firewall - or more precisely, an IDS (Intrusion Detection System) (on NT/2000/XP only)
• Script Blocker - checks all scripts running under Windows Scripting Host and Web browsers
• Boot Time Scanner - scans disks in the same way and in the same time as Windows CHKDSK does (on NT/2000/XP only)
• Explorer Scanner - right click on the object allows you to scan it
• Screen Saver scanner - integrates with your Screen Saver to scan PC during your coffee breaks
• Integrated Virus Cleaner - removes the most of the dangerous virus/worm including Sobig, Klez, Yaha etc.
• Virus Chest - safety isolated folder to store infected, suspicious and even some system files - to restore them

Our true incremental updates are based on iAVS technology and they are available for virus definition file update and for program upgrade.

• You can download and install updates by simple clicking on the iAVS icon, it can be checked and done automatically when you are On-line, and by our exclusive PUSH technology.
• The update files of size under 100 KB are available at least twice a week and within couple of hours in the case of emergency of new virus. They are automatically downloaded, installed and loaded to avast! without restart or logoff.
• Program upgrades are available to incorporate new features time to time, they are incremental too (about 300 KB)
• Updates and program upgrades are included for the selected length of contract (1, 2 or 3 years). Following years will be available for about 60% of the one year price.

avast! 4 is available in English, Bulgarian, Czech, Dutch, Finnish, French, German, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Turkish languages. You can download other installation files and documentation from our download site. You will download a 60 days fully functional demo. You will obtain the license key by E-mail after the purchase. Download, install, try, buy, register, update and relax!

avast! 4 Professional Edition cannot be installed under Windows NT/2000/2003 server or Windows Small Business Server. Such customers should use avast! 4 Server Edition or avast! 4 SBS Edition

You can buy avast! 4 Professional Edition license with 1, 2 or 3 years of updates/upgrades included. Select the right package below, please. The Volume Discount Prices are available for two and more PCs - to see them just press the "Display volume discount prices" link.