JME Molecule Editor
JME Molecular Editor is a Java applet which allows to draw / edit molecules and reactions (including generation of substructure queries) and to depict molecules directly within an HTML page. Editor can generate Daylight SMILES or MDL Molfile of created structures.
The JME Editor has been written by Peter Ertl at Comenius University and later at Ciba-Geigy Basel.
The editor is available for free for non-commercial use and has become a standard for molecular structure input on the web.
For availability information and more details see the JME HomePage.