Stream switch games to your PC via USB or network
UCI chess engine
Desktop/Android/HTML5/iOS Java game development framework
A simple and easy-to-use library to enjoy videogames programming
Open source cross-platform multi-purpose game toolkit
One framework for creating powerful cross-platform games
A cross-platform PSP emulator
Home theater software and entertainment hub for digital media
The source code to VVVVVV
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The game engine for everyone
An open source reimplementation of the Among Us Server
Netcode that provides networking capabilities to GameObject workflows
Urho3D Game engine
New Godot bindings for Swift
A dead simple 2D game library for Go
The AWS GameKit Plugin for Unreal
An award-winning drawing program for children of all ages
Chess engines that support the UCI or XBoard protocol.
3D Engine c++
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
GemRB is a portable open-source implementation of the Infinity Engine
GEDKeeper - opensource and crossplatform genealogy management program
A MUD client for Android, iOS, Linux, Mac OS X and Windows
Android, UIQ 3.0, Series 60 Edition 5 open-source software