As with the Alexandria PL/SQL Utility Library, the source code for the Thoth Gateway, a mod_plsql and Apex Listener/ORDS equivalent for Microsoft IIS, now has a new home on GitHub. This should make it easy for anyone to look at and perhaps contribute to the code.
If you don't care about the source code, you can head straight to the releases page to download just the binaries. Updated installation instructions for IIS 8 will be forthcoming, but deploying the Thoth Gateway is really as easy as just dropping the binaries into the wwwroot and using IIS Manager to turn the folder into an application.
Also, there were a few minor tweaks needed to support Apex 5.0. As far as I can tell from my own testing, everything now works, but do let me know if you have any issues.
Download the lastest version of the Thoth Gateway with Apex 5.0 support here.