RetroArch - RetroArch is a frontend for emulators, game engines and media players.
BSNES - bsnes is a Super Nintendo (SNES) emulator focused on performance, features, and ease of use.
Mupen64Plus - N64 emulator and plugins for Linux, Mac OSX, FreeBSD, and Windows
ZSNES - ZSNES is a Super Nintendo Entertainment System emulator.
1964 - 1964 is a Nintendo 64 emulator for Microsoft Windows, written in C and released as free software.
Mesen - Mesen is a NES/Famicom emulator and NSF player.