Biography Resource Center - A comprehensive database of biographical information on over 340,000 people from throughout history, around the world, and across all disciplines and subject areas.
Braintrack - University index, links to higher educational institutions.
Chemistry central - An open access research in chemistry.
EOLSS - Encyclopedia of Life Support Systems.
JSTOR - Journal storage-access to scholarly literature.
Medline Via PubMed - National Library of Medicine, free access to medical databases.
MERC INDEX - An encyclopedia of chemicals, drugs, and biologicals that contains more than 10,000 monographs.
NIST Data Gateway - Easy access to NIST scientific and technical data.
ProQuest - Powerful search methods in electronic collections of articles on variety of subjects.
SciCentral - Science and engineering metadirectory, for access to information originally scattered over the internet.
Science Express - Provides rapid electronic publication of selected research papers in science, in advance of print.
Science.gov - Public access and unified search of USA government scientific and technical information.
Science signaling - Resources in the field offered by Science online.
Scientific WebPluse - Search scientific information on the web.
Scirus - Search engine for scientific information.
Web of Science - Citation indexes including abstracts and full-text.
מדד ירושלים - סיווג כתבי עת מדעיים.
AAAS - American Association for the Advancement of Science.
ASTM - America Society for testing and materials.