Mame - MAME stands for Multiple Arcade Machine Emulator.
FCEUX - FCEUX is a Nintendo Entertainment System (NES), Famicom, and Famicom Disk System (FDS) emulator.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Nestopia - A portable and cycle-accurate NES emulator written in C++
FB Alpha - FB Alpha or FBA as it is commonly known is an emulator of arcade games, that is, it takes the...
Nebula - Nebula is an arcade emulator.