http://www.edcenter.sdsu.edu/repository/Mbcw/chime.html

CHIME - MDLI

Chime is a free program to show molecular structure in three dimensions. Its images look like RasMol's because Chime is derived, in part, from RasMol. Chime differs from RasMol in that Chime sits directly on a web page (runs inside your browser as a plug-in), whereas RasMol is a standalone program (runs outside your browser, independently).  This makes them more easily accessible than are RasMol "movie" scripts. By virtue of being embedded in web pages, Chime removes many limitations which RasMol places on educational tutorials. In addition, enhancements to RasMol's scripting language which have been implemented in Chime make it far superior to RasMol for educational scripts.  Chime also differs in that it shows only the molecule(s) provided by the author of the web page you view, whereas RasMol can show any molecule for which you have an atomic coordinate (PDB) file.

Chime 2.0 offers enhancements over 1.0 with additional supported chemical MIME types and enhanced visualization.

See configuring Netscape for using molecular viewing programs