Playnite - Source code generated using layoutit.com
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...
Lutris - Lutris is an open source gaming platform for GNU/Linux.
Game World - Game World has free games that you can play online on any device.
LaunchBox - LaunchBox is a portable, box-art-based games database and launcher for DOSBox, emulators, arcade cabinets, and PC Games. Download it free!
WildTangent - Play Games Online at WildTangent Games! Play 1,000's of Casual Games, Enthusiast Games and Family Games! Try, Buy, or Rent!