ChemStack is a collection of components that allow users to build chemically intelligent systems, such as collaboration tools, information portals, electronic laboratory notebooks, eLearning systems etc.

Some examples of useful chemical interfaces include:

• A sketcher to draw molecules
• Viewers to display molecules
• Components to display and interact with spectra
• 3D graphics engines to investigate 3D structures
• Text based input for IUPAC names and queries

There is a demo here that searches the ChEMBL database of 1.5M structures.