- Honest Intellectual Inquiry into Science
Includes categorized links to general science, anthropology, archaeology, astronomy, biology, genetics, evolution, chemistry, physics, climatology, computers, ecology, geology, mathematics, medicine, and paleontology.
- Refdesk.com - Science Information Resources
Annotated collection of resource pages for chemistry, physics, technology, anthropology, biology, food science, genetics, geology, cosmology, science history, engineering, math, and related online magazines.
- STN Easy
Web-based search engine that accesses more than 60 databases in the Scientific and Technical Information Network. Includes Scitech, regulatory information, MSDS, chemical inventories, toxicology, chemical suppliers, other topics.
Descriptions, ratings and links for a few "top internet sites" in biology, chemistry, computer science, mathematics, medicine, physics, and psychology.
- STN International on the Web
An online scientific and technical information service (subscription required) that provides access to more than 200 in-depth databases in science and technology to offer direct links to the scientific literature, patents, and chemical catalogs.
- Science Resources on the Net
A selection of listings covering museums, K-12 sites, math, computer science, philosophy of science, physics, chemistry, astronomy and cosmology, biology, geology, ecology, agriculture, medicine, psychology, anthropology and archeology. Includes website search engine.