Java/JavaFX/Kotlin Game Library (Engine)
Open Source Solid Modeling CAD
Java3d scenegraph editor
Cross Platform Professional Procedural Terrain Generation & Texturing
Growth-grammar related Interactive Modelling Platform
CSG for jMonkey
Pear3DEngine is a modern and modular 3D development framework
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor