You can download MizCGI from the menu on the right of the page. I am not able to test MizCGI on every different type of computer, but you can view what I do know about the portablity of the versions at the bottom of this page. I don't really see why it shouldn't work on just about every system in existance, but computers do strange things at times.
All versions are tar.gz files, and contain the source code.
Read the Installation instructions that come with each tarball for how to install it. Architecture Operation Sys.