Playnite - Source code generated using layoutit.com
Not Doppler - Featuring the best Free Online Games, with new games added every Thursday on Not Doppler!
Lutris - Lutris is an open source gaming platform for GNU/Linux.
Armor Games - Play free online games at Armor Games! We're the best online games website, featuring shooting games, puzzle games, strategy games, war games, and much more...
LaunchBox - LaunchBox is a portable, box-art-based games database and launcher for DOSBox, emulators, arcade cabinets, and PC Games. Download it free!
Bigdino - Bigdino Online Games, play free online games.