Atomic Mac - Periodic table of the elements for the Macintosh, including both chemical and nuclear data. For PC user get the Atomic PC.
Atomic PC - Periodic Table Software for the PC. Loads of information. For MAC users get the Atomic MAC.
CRC Handbook of Chemistry and Physics - The CRC Handbook is a desk reference for formulas, tables, scientific terms.
Chemistry Tutor - Basic Fundamental Chemistry information.
Molecular Weight Calculator - Calculates molecular weight of a chemical compound
Periodic Table - Interactive Periodic Table of Elements --Listing Major Information on each element
Thermal Spectrum - List boiling and freezing point for common elements and compounds
X-ray properties via the Periodic Table - Interactive Periodic Table giving important x-ray information, k edge and other edge energies, fluorenscence energy, and more