DeSmuME - DeSmuME is a freeware emulator for the NDS roms & Nintendo DS Lite games created by YopYop156.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
mGBA - mGBA is an open source emulator of the Game Boy Advance. The goals are speed and accuracy.
melonDS - A Nintendo DS emulator with support for commercial games.
ePSXe - ePSXe (enhanced PSX emulator) is an emulator of the PlayStation video game console for x86-based PC...
GPemu - GPemu is a Chrome Extension that serves as a video game emulator designed to play ROMs of various gaming consoles, including Gameboy Advance, NES, Gameboy, and SNES.