DooMania!

DooMania! was a for downloading and uploading external PWADs, hosted by Paul Johnson (Dr. Doom). It claimed to be the "second largest Doom BBS in the world", with the first being The Game Palace. A selection of PWADs hosted on DooMania! were burned to sometime in the mid 90s. Id Software also recommended this BBS for custom PWADs in the README.TXT file for Doom 1.8.