ClamAV/SOSDG is a part of the powerful ClamAV anti-virus software package from UNIX/Linux to Windows using the Cygwin compatibility layer.
It has been tweaked while still maintaing complete compatibility with the original version, allowing unmatched compatibility with other apps that can use ClamAV.
Like the original version, ClamAV/SOSDG is based on the GPL v2 license, which means it is free to download and use provided if you make any changes, that you contribute them back to the community.