ClamAV/SOSDG 0.92.1-2a Free Download
Shareware: You can try this program, but this version has some limited features or time usage restrictions. You should purchase it in order to remove those limits.
An open source command line anti-virus scanner for Windows that is fast and powerful and can easily be integrated with server applications for use in a mail server or proxy server. It can also be used to scan individual files or folders when necessary.
Includes a high speed scanning daemon, completely free and unlimited definition updates, and full documentation.
NT based OS recommended