You can make it - Open Source MMORPG Platform
A Native GOG and Epic Games Launcher for Linux, Windows and Mac
Godot is a powerful cross-platform game engine
A Minecraft Launcher which is multi-functional, cross-platform
The main repository for the Linux and Mac OS Bedrock edition Minecraft
A Minecraft Java Edition Launcher for Android and iOS
Self-hosted game stream host for Moonlight
Scripting platform, modding framework and VR support for RE Engine
A cross-platform PSP emulator
Lutris desktop client in Python
Xash3D FWGS engine
Voxel game-creation platform with easy modding and game creation
The Modrinth monorepo containing all code which powers Modrinth
05k0nz's legacy is safe
A complete 3-D game development suite written in Java
Mangos ZERO is a server for World of Warcraft
HTML5 Phigros chart player/simulator
An Open Source Minecraft Launcher with Modern UX
Set of Python modules designed for writing video games
A lightweight, modular and versatile mod loader for Minecraft Bedrock
Lightweight console for Minecraft chat and automated scripts
A Super-fast account switcher for Steam, Battle.net, Epic Games
One framework for creating powerful cross-platform games
Allows the connection of newer clients to older server versions
Stream switch games to your PC via USB or network