QuakeDM: A DOOM to Quake Geometery Convertor file
Welcome to QuakeDM! QuakeDM is a convertor program that reads a DOOM or DOOM II wad file and converts it into a MAP file, which can be processed and then used in Quake.
Michael Stokes Quake Geometery Convertor Level Geometery Substitute Quake Objects Automatic Object Lighting Uakedma Doom To Quake Geometery Convertor
Source: moddb.com