Gnome Chemistry Utils
ACD/ChemSketch
Avogadro
ChemDoodle
BKchem
MolView
MedChem Designer
TrueChem
Socket for Python
Kite
Sourcery
Socket for PythonACD/ChemSketch - ACD/ChemSketch for personal and academic use brings the power of our structure drawing package to your home computer.
Kite - Kite helps you write code faster by bringing the web's programming knowledge into your editor.
Avogadro - Avogadro is a free, fantastically easy to use molecule editor.
Sourcery - Sourcery reviews your code everywhere you work and automatically suggests improvements
ChemDoodle - Chemical drawing and publishing software for desktop, web and mobile. Affordable and used by thousands of scientists around the world. Free trial available for immediate download.
BKchem - BKChem is a free (as in free software :o) chemical drawing program.