ClamAV 0.103.2Description by the Software Developer:
"ClamAV For Windows is a completely free and open source anti-virus software package. ClamAV is an open source antivirus solution for UNIX/Linux operating systems.
It features a command line interface for scanning files, updating the virus definitions, and a daemon for faster scanning needed on high performance systems. ClamAV is a security software that protect your PC against virues."