Avogadro

Avogadro is a free, fantastically easy to use molecule editor. Because this editor is cross platform and light on computer resources, you know you can run it when and where you need it.

Free Open Source Mac OS X Windows Linux

Calistry.org

Calistry is an online Chemistry Calculator. Till date Calistry contains 70+ calculators in the field of Chemistry. Everything in the website is entirely free to use.

Free Android Web

pymol

PyMOL is a powerful and comprehensive molecular visualization product for rendering and animating 3D molecular structures.

Commercial Mac OS X Windows Linux

Rasmol

RasMol is a computer program written for molecular graphics visualization intended and used primarily for the depiction and exploration of biological macromolecule...

Free Open Source Mac OS X Windows Linux

UCSF Chimera

UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular structures and related data.

Free Mac OS X Windows Linux

Ghemical

Ghemical is computational chemistry package, which is licensed under GNU GPL . The ghemical authors are listed here . Ghemical is implemented using the C++...

Free Mac OS X Windows

RasTop

RasTop is a molecular visualization software adapted from the program RasMol, which was initially developed by Roger Sayle. RasTop is particularly adapted for...

Free Open Source Mac OS X Windows Linux Wine