 Rasmol
is a structure viewing program intended for the visualisation of proteins,
nucleic acids and small molecules. |
 University
of Sheffield's WebElements
is an online periodic table that provides a great deal of information on
each of the elements. |
 CambridgeSoft
Corporation's ChemFinder allows
you to search for a wide range of chemical compounds. It gives 2d and 3d
structures, properties, and pointers to more information. |
 For
Mass Spectrometry, here is a Table
of Common Fragments and a Table
of Common Fragment Losses. |
 For
NMR here is an NMR
Periodic Table and a Table
of Chemical Shifts. |
 CambridgeSoft
Corporation also offers a free, but limited, version of CS ChemOffice called
CS ChemOffice Net. Included
in this is ChemDraw and Chem3D. |
 MDL
Inc. gives ISIS/Draw
free to educational users. It is very similar to ChemDraw and has many
of the same capabilities. |
 The
ChemPuter offers a
few chemistry calculators that perform common chemistry calculations. |
 The
American Chemical Society. |