RetroArch is the reference frontend for libretro for Linux, Windows, Mac OS X, *BSD, PS3, XBox360, Wii, Android, iOS, Blackberry (and more to come).

 

RetroArch talks to libretro, a generic API for games and emulators. This means that RetroArch is core agnostic, and it does not care which emulator core is running.

 

Currently there are libretro implementations for systems such as SNES, NES, GBA, GB/GBC, Genesis, and even arcade games (Final Burn Alpha).

 

Game cores include Quake, Cave Story, Dinothawr, etc.

 

Libretro implementations are maintained in the libretro organization on Github. The official home page for this project is here.