melonDS - A Nintendo DS emulator with support for commercial games.
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.
nds4droid - nds4droid is a free, open source Nintendo DS emulator written for Android smartphones.
ZSNES - ZSNES is a Super Nintendo Entertainment System emulator.
gpSPhone - gpSPhone is a Nintendo Gameboy Advance emulator for the iPhone and iPod Touch.