FCEUX - FCEUX is a Nintendo Entertainment System (NES), Famicom, and Famicom Disk System (FDS) emulator.
Mame - MAME stands for Multiple Arcade Machine Emulator.
Nestopia - A portable and cycle-accurate NES emulator written in C++
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
FB Alpha - FB Alpha or FBA as it is commonly known is an emulator of arcade games, that is, it takes the...
VirtuaNES - VirtuaNES is Famicom/NES emulator for Win32.