Chemaxon Marvin is described as «Marvin suite is a chemically intelligent desktop toolkit built to help you draw, edit, publish, render, import and export your chemical structures and as well as allowing you to convert between various chemical and graphical file formats» and is an app in the web browsers category. There are more than 10 alternatives to Chemaxon Marvin for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad. The best alternative is Avogadro, which is both free and Open Source. Other great apps like Chemaxon Marvin are BKchem, Gnome Chemistry Utils, JChemPaint and ACD/ChemSketch.
