RetroArch - RetroArch is a frontend for emulators, game engines and media players.
OpenEmu - Console and Arcade video game emulator for macOS.
Mesen - Mesen is a NES/Famicom emulator and NSF player.
ePSXe - ePSXe (enhanced PSX emulator) is an emulator of the PlayStation video game console for x86-based PC...
Snes9x - Snes9x is a portable, Super Nintendo Entertainment System (SNES) emulator.
Mame - MAME stands for Multiple Arcade Machine Emulator.