A free, full-text archive of biomedical and life sciences journals maintained by the U.S. National Institutes of Health's National Library of Medicine.
Searchable collection of 3500 scholarly and scientific open access journals, maintained by Lund University Libraries. NOTE: Many titles in this collection are not in English. (What is Open Access?)
Gateway to scientific web sites as well as a search engine for government science information and research results. Maintained by a consortium of U.S. federal agencies.