SketchUp - 3D for Everyone
Unity - The multiplatform game creation tools for everyone.
Lightwave 3D - LightWave 3D combines a state-of-the-art renderer with powerful, intuitive modeling, and animation...
Godot Engine - Feature-packed 2D and 3D open source game engine.
Sketcher 3D - Sketcher3D is a 3D modeling, design, and fun physics sandbox.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.