Organic

Classic Organic Reactions - A database of named and alphabetized organic reactions with references.
http://www.chempensoftware.com/organicreactions.htm

CombiChem Lab - Reviews, links and news in combinatorial chemistry, high and ultra-high throughput screening, and lab automation.
http://www.combichemlab.com

OCHeM.com - A site dedicated to helping students with organic chemistry by providing quick reference topics.
http://www.ochem.com/

Not Voodoo - "Demystifying synthetic organic laboratory technique": tips, traps, troubleshooting, and techniques.
http://www.chem.rochester.edu/~nvd/

ORGLIST Archive - Discussion list of nearly 500 organic chemists worldwide. Join this community or search their previous discussions by author, subject, date, or thread.
http://www.orglist.net/

Porphynet - Portal of porphyrins and related molecules.
http://www.porphyrin.net/

Jamaican Themes for Lecture Material - The chemistry of Jamaican alumina, spices, coffee, rum, synfuel, marine natural products, and herbal remedies.
http://wwwchem.uwimona.edu.jm:1104/lectures/

About.com - Organic Chemistry - Information about the chemistry of carbon and life. Features lectures, notes, structures, and labs.
http://chemistry.about.com/od/organicchemistry/index.htm

Arkat Foundation - Free ARKIVOC online journal and online education in chemistry.
http://www.arkat-usa.org/

Organic Chemistry Portal - Includes a searchable literature index, named reactions and protecting groups as well as a chemical database.
http://www.organic-chemistry.org/

Organic Chemistry Cram Sheet - Includes study tips, review and formula sheets.
http://www.yourformulasheet.com

Organic Name Reactions - Schematic representation of about 140 organic name reactions with references. Some of the schemes are animated.
http://www.monomerchem.com/display4.html

Chirality and Odour Perception - Odor descriptions and molecular visualization of chiral flavor and fragrance chemicals.
http://www.leffingwell.com/chirality/chirality.htm

ACS Organic Division - The Division of Organic Chemistry of the American Chemical Society. Provides important information and announcements on the divisions activities and member benefits.
http://www.organicdivision.org/

Combinatorial Chemistry Notes - Short descriptions of the history and methods used in combichem as well as events and related links.
http://www.screening-compounds.com/

Wikibooks - Organic Chemistry - A user contributed resource of basic concepts and ideas in organic chemistry.
http://en.wikibooks.org/wiki/Organic_chemistry

Modern Molecular Photochemistry of Organic Compounds - Course page including videotaped lectures and problem sets with solutions.
https://courseworks.columbia.edu/cms/outview/courseenter.cfm?no=CHEMG8313_001_2003_1