UCI chess engine
Godot is a powerful cross-platform game engine
A safe home for all your data
Open source voxel game engine with support for survival and crafting
Speech recognition module for Python
RetroArch is a frontend for emulators, game engines and media players.
An open source C++ game engine
The game engine for everyone
Multiplatform C++ library for parsing and crafting of network packets
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Command-line translator using Google Translate, Bing Translator, etc.
Solar2D Game Engine main repository (ex Corona SDK)
Open-source engine for Heroes of Might and Magic III
Embeddable unity game engine view for Flutter
A cross-platform, open-source, pure C game engine for mobile game
Sources for OpenXR loader, basic API layers, and example code
API server module for Node/Express
.NET version of the Playwright testing and automation library
New Godot bindings for Swift
Urho3D Game engine
A JavaScript engine optimized for running React Native
Kotlin extensions for the libGDX game framework
Java/JavaFX/Kotlin Game Library (Engine)
Browser extension for reverse image search, available for Chrome
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs