RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Vortex Cloud Gaming - Cloud gaming app allowing to play PC games on Android, PC or even in web browser
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.
Parsec - Streams games locally or over the internet
Playnite - Source code generated using layoutit.com
Shadow - Transform any device into a supercharged gaming machine.