A real-time 3D engine for DOS-talgics (see GLOBE_3D for new stuff !)
3D Engine with Blender Integration
Java/JavaFX/Kotlin Game Library (Engine)
Open game and rendering engine packed into a JavaScript framework
The open-asset-importer-library repository
Vivid3D is a C++ IDE/3D engine, with python scripting.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
Lightweight, high-performance HTML renderer for game developers
Growth-grammar related Interactive Modelling Platform
Vivid is a modern C++ 3D engine using OpenGL4+
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Cross-platform 2D and 3D game engine
CSG for jMonkey
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Realtime 3D engine for game development
3D .NET engine for Windows, Linux, Mac
A public domain cross platform 3D game