Blender - Blender is the open source, cross platform suite of tools for 3D creation.
pymol - PyMOL is a powerful and comprehensive molecular visualization product for rendering and animating...
open3mod - A free, Open-Source 3D Viewer designed to make it all easier. Massive 3D Format support
UCSF Chimera - UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular...
cmftStudio - GUI counterpart of cmft - cross-platform open-source cubemap filtering tool.
Calistry.org - Calistry is an online Chemistry Calculator.