RetroArch - RetroArch is a frontend for emulators, game engines and media players.
FCEUX - FCEUX is a Nintendo Entertainment System (NES), Famicom, and Famicom Disk System (FDS) emulator.
OpenEmu - Console and Arcade video game emulator for macOS.
Nestopia - A portable and cycle-accurate NES emulator written in C++
ePSXe - ePSXe (enhanced PSX emulator) is an emulator of the PlayStation video game console for x86-based PC...
Mame - MAME stands for Multiple Arcade Machine Emulator.