Internet Public Library
A public service organization and learning/teaching environment founded at the University of Michigan School of Information.
A digital library of authoritative medical information and education for all students of medicine. Recommended sites include free online textbooks and journals.
Public Library of Science
PLoS provides fulltext, peer reviewed, and scientific or medical research articles in various subject areas. PLoS has created several journals to group similar content together. PLoS also provides links to articles not provided in PLoS.