A development environment focused on modding
Bloat-free Graphical User interface for C++ with minimal dependencies
Blockbench - A low poly 3D model editor
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Cross-Platform C++ 2D/3D game engine
3D Procedural Game Engine Using OpenGL
LayaAir is an open-source 2D/3D engine
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Powerful, mature open-source cross-platform game engine for Python
Java/JavaFX/Kotlin Game Library (Engine)
3D game engine/framework in C, with Luajit and Python bindings now
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Server-side rendering and prerendering for Angular
The data structure for multimodal data
Embeddable unity game engine view for Flutter
Build cross-modal and multimodal applications on the cloud
Large-scale WebGL-powered geospatial data visualization analysis
A modern, cross-platform Quake game engine based on FitzQuake.
The Skyscraper Project
GemRB is a portable open-source implementation of the Infinity Engine
Game engine supporting many 3D/2D formats and graphic effects
Vivid3D is an open-source 3D engine with powerful 2D UI.