Blender - Blender is the open source, cross platform suite of tools for 3D creation.
ENIGMA – LateralGM - LateralGM is a powerful IDE for ENIGMA, and both of these combine to offer you a cross-platform game environment.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Godot Engine - Feature-packed 2D and 3D open source game engine.
DAZ 3D - Daz 3D, 3D Models, 3D Animation, 3D Software
Lobster - Lobster is a game programming language.