Owned, operated and funded by Cornell University and the National Science Foundation, this database includes articles in the fields of physics, mathematics, non-linear science, computer science, quantitative biology and statistics 

A complete digital archive of the back issues of the Journal of the American Mathematical Society (1988-1995). Full article PDFs in all volumes older than five years are available electronically free of charge 

Peer reviewed open access scientific and medical research. Free registration is required to search and download articles. Members of the board of directors include faculty from Harvard, Oxford, and Rockefellar Universities as well as scientists from Memorial-Sloan Kettering and Dana Farber Institute. 

Begun by BioMed Central, these are peer reviewed articles on chemical research. Free registration is required to search and download articles. 

The largest collection of open access journals covering topic areas such as Biology and Life Sciences, Chemistry, Mathematics, Social Sciences, and Technology and Engineering. 

From Stanford University Libraries, an extensive collection of science, mathematics, and social science journals. 

A comprehensive collection of academic and professional research articles online - some 4.5 million articles from 13,500 publications. 

Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: articles, theses, books, abstracts and court opinions, from academic publishers, professional societies, online repositories, universities and other web sites. Google Scholar helps you find relevant work across the world of scholarly research. 

Abstracts in science and medicine from leading researchers in the world.  

A nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature freely available to the public. 

A free digital archive of biomedical and life sciences journal articles at the U.S. National Institutes of Health. 

Full text of all issues from 1845 to the most current issue.  Includes supplemental and special issues. 

A portfolio of over 160 peer-reviewed open access journals across all areas of science. 

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