Godot is a powerful cross-platform game engine
Firefox for Android
Solar2D Game Engine main repository (ex Corona SDK)
Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Sceneform Maintained is an ARCore Android SDK with Google Filament
3D Engine c++
A JavaScript engine optimized for running React Native
Game engine supporting many 3D/2D formats and graphic effects
UCI chess engine
Open source routing engine for OpenStreetMap
Innovative user interfaces made easy
Sandbox video game with a powerful physics engine
An elegant and beautiful premium Android app manager
A safe home for all your data
GemRB is a portable open-source implementation of the Infinity Engine
Open source voxel game engine with support for survival and crafting
Chess engines in APK format that provide the OEX format.
Chess engines that support the UCI or XBoard protocol.
Realtime application framework (Node.JS server)
Home theater software and entertainment hub for digital media
Java/JavaFX/Kotlin Game Library (Engine)
Engo is an open-source 2D game engine written in Go
The game engine for everyone
RenderDoc is a stand-alone graphics debugging tool
Open source text shaping engine