Public Library of Science (PLoS) - PLoS is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.
Social Science Research Network (SSRN) - Social Science Research Network is devoted to the rapid worldwide dissemination of social science research. The SSRN eLibrary consists of two parts: an Abstract Database containing abstracts on over 197,700 scholarly working papers and forthcoming papers and an Electronic Paper Collection, with many downloadable papers.
