RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Mesen - Mesen is a NES/Famicom emulator and NSF player.
BSNES - bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
Nestopia - A portable and cycle-accurate NES emulator written in C++
ZSNES - ZSNES is a Super Nintendo Entertainment System emulator.
FCEUX - FCEUX is a Nintendo Entertainment System (NES), Famicom, and Famicom Disk System (FDS) emulator.