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ChemPort
search Chemical Abstracts to find references of interest and get the full article from the web sites of major scientific publishers.
http://www.chemport.org/
Journal of Theoretics
a nonprofit peer-reviewed journal of original and scientifically credible theories from all disciplines. Articles are online.
http://www.journaloftheoretics.com/
Proceedings of the National Academy of Sciences
multidisciplinary journal that covers the biological, physical, and social sciences, publishing research reports, commentaries, reviews, colloquium papers, and actions of the Academy.
http://www.pnas.org/
Public Library of Science
nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a freely available public resource.
http://www.plos.org/
Science Magazine
global weekly journal of research which serves the scientific community as a forum for the presentation and discussion of important issues related to the advancement of science.
http://www.sciencemag.org/
