HEATKEYS

Free chemical structure search engine. Millions of public domain structures. Very fast substructure searching. Results link to data about these structures.

Support for high school science courses, including chemistry, AP Chemistry, biology and physics. ScienceGeek.net is the website of Andy Allan, science instructor at El Diamante High School in Visalia, CA.

PubChem homepage

ChemSpider is a free chemical structure database providing fast access to over 26 million structures, properties and associated information.

Your Partner in Chemistry Software for Analytical and Chemical Knowledge Management, Chemical Nomenclature, and In-Silico PhysChem and ADME-Tox

Find organic chemistry tutorials, self-grading tests, common organic chemistry reaction mechanisms, chemistry FAQs, and laboratory help

Scilligence provides the most innovated informatics technology for Pharma, BioTech and Chemical industry: Products including Scilligence ELN, Chem4SharePoint, Chrawler, JSDraw, MolEngine, MolSql

Edraw is a powerful yet easy-to-use program for creating flowcharts, organizational charts, network diagrams, business presentations, building plans, mind mapping and lots more.

A new spin on the perceptions, procedures, and principles of flight. 20 chapters, over 200 illustrations.