MCAT Practice Tests -- The MCAT online course provides an extensive resource of free self assessment module quizzes designed to assist in both structuring and completing test preparation.
Meducation -- Meducation is a non-profit organization created to promote the use of software technology in medical education. Meducation's main goal is to provide efficient links to the vast amount of medical information available on the internet.
PubMed Central -- PubMed Central is a digital archive of life sciences journal literature managed by the National Center for Biotechnology Information (NCBI) at the U.S. National Library of Medicine (NLM). Access to PubMed Central is free and unrestricted.
U.S. National Library of Medicine
WebCat -- World Health Organization - WHOLIS webcat
WebMedLit -- WebMedLit indexes medical web sites every day and presents the articles from each in a streamlined consistent format. WebMedLit is a service of SilverPlatter Information, the leading provider of electronic information to researchers and librarians worldwide.