| 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. |
| CombiChem Lab | | Reviews, links and news in combinatorial chemistry, high and ultra-high throughput screening, and lab automation. |
| Not Voodoo | | "Demystifying synthetic organic laboratory technique": tips, traps, troubleshooting, and techniques. |
| OCHeM.com | | A site dedicated to helping students with organic chemistry by providing quick reference topics. |
| Organic Name Reactions | | Schematic representation of about 140 organic name reactions with references. Some of the schemes are animated. |
| Organic-Chemistry.org | | Includes a searchable literature index, named reactions and protecting groups as well as a chemical database. [English and German] |
| ORGLIST Archive | | Discussion list of nearly 500 organic chemists worldwide. Join this community or search their previous discussions by author, subject, date, or thread. |
| Porphynet | | Portal of porphyrins and related molecules. | |
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