Mesen - Mesen is a NES/Famicom emulator and NSF player.
Kawaks - Winkawaks Emulator Official Website,Latest version of Winkawaks,Best Neo Geo Emulators,and Neo Geo Game Roms Download, The King of Fighters Download.
Nestopia - A portable and cycle-accurate NES emulator written in C++
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
VirtuaNES - VirtuaNES is Famicom/NES emulator for Win32.
Mame - MAME stands for Multiple Arcade Machine Emulator.