DBGL - DBGL is a free, open source, multiple frontends for DOSBox.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Terminal Launch V - For those that want a clean, simple fast emu frontend.
mGBA - mGBA is an open source emulator of the Game Boy Advance. The goals are speed and accuracy.
RetriX - RetriX is an emulator front end for UWP, on all the hardware platforms it supports: it serves the...
DeSmuME - DeSmuME is a freeware emulator for the NDS roms & Nintendo DS Lite games created by YopYop156.