Open source virus program

[Swansen]

ClamWin Free Antivirus. GNU GPL Free Software Open Source Virus and Spyware Scanner. Download Free Windows Antivirus. Stay Virus and Spyware Free with Free Software. - How You Can Help

Its an open source virus program, so its cool. Granted it scans really slowly.

 

[Impotence]

runs on linux too, of course its only really useful for an email server / similar idea to check attachments going to windows pc's