2. OmgifolA Python library for manipulation of Doom WAD files
3. KdceditorKirby's Dream Course / Kirby Bowl level editor (C++ / Qt)
4. DmvisDoom / Doom II map design visualizer
5. kaleKirby's Adventure Level Editor (C++ / Qt)
7. exhalCompression and decompression tools for NES, SNES, and Game Boy games by HAL Laboratory
8. roswellSuper UFO Pro 8 (SNES backup unit) tools and documentation
9. prboom-3dsNintendo 3DS port of the Doom engine, based on PrBoom v2.5.0