The test_harness module is kept in a Subversion repository.
To follow development, you have two choices:
Check out a read-only copy of the repository on your own machine. After installing Subversion, a simple
svn checkout http://oakwinter.com/svn/test_harness
will do the trick.
We also provide a browser-based interface to the repository using WebSVN.
If SVN is down (as it sometimes is), we also provide a tarball of the latest trunk revision.