open3mod - A free, Open-Source 3D Viewer designed to make it all easier. Massive 3D Format support
MilkShape 3D - The MilkShape 3D website has been down for almost one week.
noesis - Rich Whitehouse's project web site.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Calistry.org - Calistry is an online Chemistry Calculator.
BioBlender - BioBlender is a software package built on the open-source 3D modeling software ...