From AVAST Software:
Avast 4 Home Edition is a complete ICSA-certified antivirus package for home noncommercial use. Avast Home Edition includes On-Demand Scanner with a skinnable simple interface. Just select what you want to scan and press the Play button. On-Access Scanner does resident scanning of all files being opened, read, and written, and the behavior blocker monitors for dangerous actions of viruses. E-mail Scanner easily integrates with most mail clients and it checks both incoming and outgoing mail. It provides heuristic analysis of mail content to protect against new worms. Boot-Time Scanner scans disks in the same way and in the same time as Windows CHKDSK. With Explorer Scanner, you can right-click on the object to scan it. Screensaver Scanner integrates with your screensaver to scan your PC during your coffee breaks. Virus Chest is a safety isolated folder to store infected, suspicious files. The true incremental updates are based on iAVS technology and are available at least twice a week.