Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
UCSF Chimera - UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular...
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Jmol - Jmol is a free, open source molecule viewer for students, educators, and researchers in chemistry...
ZBrush - ZBrush is a digital sculpting and painting software solution.