PrBoom, the purest Doom-Port? Aims to be the most stable Doom port with the highest compatibility to the major Doom versions. Highres software and nice OpenGL rendering. Full Boom and most if not all MBF features.
Doom 2 MAP11 "Circle of Death" - software mode.
Doom 2 MAP28 "The Spirit World" - GL mode.
Doom E3M6 "Mt. Erebus" - software mode
Final Doom, Plutonia MAP13 "The Crypt" - GL mode
Final Doom, TNT Evilution MAP02 "Human BBQ" - software mode.