Avast 4 (new)

Avast! Home Edition includes the following components:

On Demand Scanner - with Skinnable Simple Interface - just select what you want to scan, in which way, and press the Play button.

On-Access Scanner - with special providers to protect:
most available E-mail clients,
Instant Messaging - ICQ, Miranda etc.,
Network traffic - Intrusion Setection,
P2P protection for Kazza, BitTorrent etc.,
Web shield - monitors and filter all HTTPtraffic,
NNTP Scanner - scans all Usenet Newsgroup traffic
and of course all operations on PC files.

avast! can scan inside the huge number of different packers including ZIP, ARJ, RAR etc. even Outlook Express .dbx files.

Boot-Time Scanner - scans disks in the same way and in the same time as Windows CHKDSK does (on NT/2000/XP only).
Screen Saver Scanner - scans PC during your coffee breaks.
Virus Chest - safe, isolated folder to store infected, suspicious and even some system files - to restore them.

Download: click here