Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Java3d scenegraph editor
3D Procedural Modelling and Procedural Texturing Tool in OpenGL/C++
Modern 3D engine and IDE written using C# and C++.
A tool for creating voxels for the DelphiDoom Engine
A 2D game engine and level editor
A planetarium software that shows a 3D simulation of the night sky
MCEdit: World Editor for Minecraft
.NET - VISUAL BASIC NVIDIA +ATI PHYSX SLIMDX DIRECTX 9 -ENGINE/WRAPPER
Realtime Media Engine (2D/3D/Audio)
Pear3DEngine is a modern and modular 3D development framework
Easy Terrain editing and Heightmap creation
Add-ons for the 3D Terrain & Landscape Editor Artifex Terra 3D
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor