Submit website
Quickly submit to top 350 search engines and directories.
http://www.mass-submit.com/

Free Website Content
Large database of reprintable articles for your website, blog, ezine, newsletter, etc.
http://www.articledepot.net

Free URL Submission
Submit to dozens of search engines for FREE. No strings attached!
http://www.searchenginesubmission.biz

Apple parts
Best deals on hard-to-find Apple Macintosh computers, parts and accessories.
http://www.nexcomp.com/

A Periodic Table of the Elements at Los Alamos National Laboratory
[Very basic data, detailed write-ups] The Chemical Science and Technology division's Periodic Table describes the history, properties, resources, uses, isotopes, forms, costs, and other information for each element.
http://periodic.lanl.gov

Abstract Database from Rapra
Subscription based online library providing information to rubber, plastic, and polymer industries.
http://abstracts.rapra.net

Beta-Theta
Gives general defintions, background and examples from the science fields of biology, physics, chemistry, math, and history. Includes forum boards.
http://www.beta-theta.com

Carnegie Mellon Engineering and Science Library
Variety of subject guides, mainly in the applied sciences and engineering, and links to related collections in other Pittsburgh libraries.
http://www.library.cmu.edu/Research/EngineeringAndSciences

Center for Science and Technology Studies
Develops, monitors and assesses the fundamentals for policy decisions in the fields of research, higher education and innovation in Switzerland.
http://www.cest.ch/en

ChemBank
Initiative for Chemical Genetics. Freely available collection of data about small molecules (over 2000 compounds) and resources for studying their properties, especially their effects on biology.
http://chembank.med.harvard.edu

ChemBank - Small Molecule Bioactives Database
Chemical structures and biological activity data for over 2,000 compounds, primarily from published sources.
http://chembank.med.harvard.edu/bioactives

Chemcyclopedia Plus
An annual supplement to Chemical & Engineering News (C&EN). Provides users/purchasers of chemicals with trade names, packaging, special shipping requirements, potential applications, and CAS Registry Numbers. Chemicals are listed in categories.
http://pubs.acs.org/chemcy

Chemfinder Chemical Directory
Directory of chemicals, physical properties, and Internet links.
http://chemfinder.cambridgesoft.com

Chemical Abstracts Service (CAS)
Provides pathways to published research in the world's journal and patent literature through tools such as SciFinder, SciFinder Scholar and STN. CAS databases provide access to over 25 million documents, 26 million chemical substances, and 56 million sequences.
http://www.cas.org