• American Chemical Society
• American Society for Cell Biology
• ASDL Collection (The Analytical Sciences Digital Library)
• BioChemWeb
• BioOne Digital Library
• Biology Online
• BioRxiv
• CAS Common Registry
• ChemRxiv
• Electrochemistry Encyclopedia
• Organic Compounds Database
• Patent Public Search (U.S. Patent and Trademark Office public search tool for patent and patent application information.)
• PhysLink.com (PhysLink: The Ultimate Physics Resource)
• Protein Data Bank
• PubChem  (Open chemistry database at the National Institutes of Health)
• PubMed Central (U.S. National Library of Medicine's free digital archive of biomedical and life sciences journal literature)
• Science Daily
• Science Learning Network (partially sponsored by the National Science Foundation)
• ScienceOpen Research (publishes articles across all disciplines with a unique open peer review concept)
• ScientificAmerican.com (Scientific American Online)

Last updated: 9/8/2025