Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Unity - The multiplatform game creation tools for everyone.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Aartform Curvy 3D - Aartform Curvy 3D is an easy and fast sculpting program for Windows.
PathEngine - PathEngine is a middleware toolkit for the implementation of intelligent agent movement, built around and implementation of points-of-visibility pathfinding on 3D ground surfaces.