Mame - MAME stands for Multiple Arcade Machine Emulator.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Mesen - Mesen is a NES/Famicom emulator and NSF player.
FB Alpha - FB Alpha or FBA as it is commonly known is an emulator of arcade games, that is, it takes the...
Snes9x - Snes9x is a portable, Super Nintendo Entertainment System (SNES) emulator.
Nebula - Nebula is an arcade emulator.