avast! Home Edition includes the following components:
- On Demand Scanner - with Skinnable Simple Interface - just select what do you want to scan in which way and press the Play button.
- On Access Scanner - resident scanning of all files being opened, read and written and behavior blocker monitoring dangerous actions of viruses.
- 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.
- Network Shield - scans traffic for malicious content - lightweight Firewall.
- Resident protection for IM programs (e.g. MSN Messenger, ICQ) and P2P programs (e.g. Kazaa, DirectConnect).
- 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 - scans PC during your coffee breaks.
- Virus Chest - safety isolated folder to store infected, suspicious and even some system files - to restore them.

avast! 4 Home is available in English, French, German, Italian, Japaneese, Polish, Portuguese, Russian, Spanish and other languages...