ShapeShop - ShapeShop is an advanced and professional 3D design and modeling application that comes with an easy-to-use and user-friendly interface.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Misfit Model 3D - Misfit Model 3D is a 3D model editor that basically operates with triangle-based models.
ZBrush - ZBrush is a digital sculpting and painting software solution.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
SculptGL - SculptGL is a browser-based 3d-modeling application.