avast! Home Edition

avast! Home Edition is a complete anti-virus package. It is currently the ultimate antivirus for home, non-commercial use. It has on-demand scanner, on-access scanner and e-mail scanner which scans incoming and outgoing email messages. It integrates with the Windows Explorer right click menu so you can easily scan selected files. Updates are available for manual or scheduled download.

Rating: 9.5/10.
Homepage: http://www.avast.com