| Base Peak | | Formerly "Mass Spectrometry on the Internet", an index page of mass spectrometry internet sites including links to mass spectrometry groups, companies, resources, and software. |
| ChemDex | | A directory of chemistry resources on the WWW, located on the Sheffield chemistry server. |
| ChemFinder Searching | | An index to chemical information on the Internet, with structures and physical properties, searchable by name, structure, CAS Number, and physical properties. |
| Chemical Resources | | Many places to search chemical information in Internet, page held in Columbia. |
| Chemie.DE | | Chemie.DE is an information service for the german chemistry community. It provides search engines for chemistry and various databases for chemical information. |
| ChemIndustry.com | | Providing information on all facets of the world-wide chemical industry. Many links to web resources of interest to chemists and the chemical industry. |
| Chemsoc | | Online networks in specialist areas, science, industry and product news, a comprehensive events database, job centre, access to major references, and society resources. |
| ChemWeb.com | | Features searchable chemistry journals and databases, jobs, books, software, conferences diary and ChemDex+. |
| Links for Chemists | | An extensive index of chemistry resources maintained at The University of Liverpool. |
| Medicinal Chemistry Links | | A collection of links for chemists and students involved in organic, biochemical, computational, and/or medicinal chemistry research, maintained by Virginia Commonwealth University. |
| moreChemistry | | Maintains lists of events, links and jobs. Registered members can promote their websites themselves. |
| Rolf Claessen's Chemistry Index | | Links to freeware, discounted software, free databases, societies, spectroscopy resources, reaction mechanisms and online discussion forums. |
| The Wired Chemist | | A collection of Chemistry resources, including links to other sites and data tables. |
| Top20Chemistry.com | | Online directory for chemistry education in organic, analytical, bio, physical, electro, atmospheric, and several other topics. |
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