Freedoom is a project to create a complete, free Doom IWAD
file. Combined with the GPLed Doom source code, it creates a
completely free Doom-based game.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.