Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Sculptris - Sculptris: Enter a world of digital art without barriers.
IronCAD - IronCAD is intuitive 3D CAD software that increases efficiency and can be used standalone or to complement an existing design environment.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Inventor - Inventor is a 3D CAD software that lets you quickly create 3D models with embedded intelligence, intuitive workflows, and optimized performance.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.