pymol - PyMOL is a powerful and comprehensive molecular visualization product for rendering and animating...
Rasmol - RasMol. 96 likes. RasMol is a computer program written for molecular graphics visualization intended and used mainly to depict and explore biological...
Jmol - Jmol is a free, open source molecule viewer for students, educators, and researchers in chemistry...
VMD - Visual Molecular Dynamics - VMD - Visual Molecular Dynamics, molecular graphics software for MacOS X, Unix, and Windows
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
QuteMol - QuteMol is an open source (GPL), interactive, high quality molecular visualization system.