Blender - Blender is the open source, cross platform suite of tools for 3D creation.
BioBlender - BioBlender is a software package built on the open-source 3D modeling software ...
MeshLab - System for processing and editing 3D triangular meshes, provides a set of tools for editing...
pymol - PyMOL is a powerful and comprehensive molecular visualization product for rendering and animating...
Autodesk FBX Review - FBX Review is a lightweight, standalone software tool for viewing 3D assets and baked animations...
Online 3D Model Converter - free online 3D model converter, upload a model and export it into popular formats