Godot is a powerful cross-platform game engine
Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Solar2D Game Engine main repository (ex Corona SDK)
Open source routing engine for OpenStreetMap
Sceneform Maintained is an ARCore Android SDK with Google Filament
A JavaScript engine optimized for running React Native
UCI chess engine
Innovative user interfaces made easy
Sandbox video game with a powerful physics engine
Open source voxel game engine with support for survival and crafting
A safe home for all your data
Home theater software and entertainment hub for digital media
Open QR Code is an open-source, cross-platform app
The game engine for everyone
JUCE is an open-source cross-platform C++ application framework
Template-driven engine to generate documentation
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Open source text shaping engine
Capstone disassembly/disassembler framework
Realtime application framework (Node.JS server)
Lua Virtual Reality engine
Real-time physically based rendering engine for Android, iOS, and more
Open-source engine for Heroes of Might and Magic III
Urho3D Game engine
A sizzlin' hot selector engine