melonDS - A Nintendo DS emulator with support for commercial games.
nds4droid - nds4droid is a free, open source Nintendo DS emulator written for Android smartphones.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Delta - Delta is the ultimate cryptocurrency portfolio management tool.
NesterDC - NesterDC is an emulator that enables you to play Famicom and NES games.
DEmul - DEmul is a Sega Dreamcast emulator able to play commercial games.