RetroArch

RetroArch is a frontend for emulators, game engines and media players.

EmulationStation

a graphical emulator front-end

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Happy Chick emulates more than 18 systems all in one APP

HyperSpin is an animated arcade frontend for Windows for use on Home Arcade Machines.

Kega Fusion is an emulator for the Sega Genesis / Megadrive, Master System, Game Gear, 32x…

Lakka is the official Linux distribution of RetroArch and the libretro ecosystem.

Lutris is an open source gaming platform for GNU/Linux.

Emulates most gaming systems that exist, emphasizing accuracy over speed.

MAME stands for Multiple Arcade Machine Emulator.

Mednafen is a portable, utilizing OpenGL and SDL, argument(command-line)-driven multi-system…

Project64 is a Nintendo 64 emulator for the Windows platform.

Snes9x is a portable, Super Nintendo Entertainment System (SNES) emulator.

Snes9x EX is an SNES/Super Famicom emulator written in C++ for Android, iOS, WebOS and Linux.

higan was formerly known as bsnes. The project was renamed after becoming a multi-system emulator.