MDL Chime was a free plugin used by web browsers to display the three-dimensional structures of molecules.
One significant feature added in 1997 was the ability to display spectroscopic data in the form of the IUPAC JCAMP-DX protocols.
Apart from this, most subsequent updates were for the installation package to follow the development of Windows and Internet Explorer.
[4] Chime was part of the ISIS product line acquired by Symyx Technologies from scientific publisher Elsevier in October 2007.
Now Chime is owned by Dassault Systemes BIOVIA (formerly Accelrys), and has been merged into Discovery Studio, but no longer exists as a free browser plugin.