pymol - PyMOL is a powerful and comprehensive molecular visualization product for rendering and animating...
ImageJ - and Other Health Care
UCSF Chimera - UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular...
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
Jmol - Jmol is a free, open source molecule viewer for students, educators, and researchers in chemistry...
ACD/ChemSketch - ACD/ChemSketch for personal and academic use brings the power of our structure drawing package to your home computer.