ClamAV is a Windows command line version of the GPL licensed anti-virus solution.
It includes a set of command line tools, including a high speed scanning daemon, that can be used to scan computers for viruses, or used by mail servers or proxy servers (via command line) to clean incoming messages.
The program offers free definition updates and comes with detailed (PDF) documentation. Suited for advanced users only.
What's New in ClamAV 0.88.4 :
· This release fixes a possible heap overflow in the UPX code.
Warning: There has been an upstream change to the config file format that ClamAV uses. Please uninstall and delete your old config files (in C:clamav-develetc) before installing this version, or download new versions here (and edit them to your need):