Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Keyshot - KeyShot 3D rendering and animation software is the fastest, easiest way to create amazing, photographic visuals of your 3D models. Enter your search in the box aboveTryYour download of KeyShot is only moments away.
FreeCAD - An open-source parametric 3D modeler
Sculptris - Sculptris: Enter a world of digital art without barriers.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
meshmixer - meshmixer is an experimental 3D modeling tool for making 3D mashups without too much hassle.