John GBA - The GBA emulator is a software program that allows you to play Game Boy Advance games on your computer.
RetroArch - RetroArch is a frontend for emulators, game engines and media players.
MESS - Emulates most gaming systems that exist, emphasizing accuracy over speed.
Playnite - Source code generated using layoutit.com
Eclipse emu - Eclipse is a multi-platform emulator of Game Boy Advance and Nintendo DS games.
Batocera.linux - Batocera.linux is an open-source and completely free retro-gaming distribution that can be copied to a USB stick or an SD card with the aim of turning any computer/nano computer into a gaming console during a game or permanently.