Phoenix
A beautiful macOS game launcher. Completely open source, built with SwiftUI, and optimized for macOS.
Game Launchers
Heroic Games Launcher
Heroic is a Free and Open Source Epic, GOG and Amazon Prime Games launcher for Linux, Windows and macOS. Also available on the SteamDeck!
Mythic
An open-source Epic Games Launcher alternative and game launcher for macOS written in Apple Swift, with the ability to run Windows® games.
Lutris
Play all your games on Linux. Lutris is an Open Source gaming platform for Linux. It installs and launches games so you can start playing without the hassle of setting up your game. Get your games from GOG, Steam, Battle.net, Origin, Uplay and many others.
Playnite
Video game library manager with one simple goal: To provide a unified interface for all of your games.