* [https://freedoom.github.io/ Official website]
* [https://github.com/freedoom/freedoom Official Git repository]
* [http://freefreedoom.doomerssoulsphere.org/ Nightly Automatic Git builds]
* [http://www.doomworld.com/vb/freedoom/ Official forums (hosted on Doomworld.com)]
* {{dwforums|50461|Doomworld thread about "Hell of Earth II" for the iPhone}}