BioMedSearch is a biomedical search engine that contains NIH/PubMed documents, plus a large collection of theses, dissertations, and other publications not found anywhere else for free. http://www.biomedsearch.com/
Account features are available that allow saved searches, alerts, saving documents to portfolios, commenting on documents and portfolios, and sharing documents with other registered users.
Free Registration is required.
Note: Tulane users will need to use the Library E-Journals link to locate full text as the TULink is not available in this free search engine.