Academia.edu - Academia.edu helps academics follow the latest research in their field: You can follow what academics in your field are working on:the latest papers they are publishing, talks they are giving, blog posts and status updates they are writing.

Alkek Library - science and technology databases via Alkek Library at Texas State University

Aecportico - architecture, engineering, and construction search engine

Avano - marine and aquatic sciences search engine

Bedford St. Martin's - science research and documentation online

BioMed Search - free biomedical search engine that contains NIH/PubMed documents, plus a large collection of theses, dissertations, and other publications

Botany - internet directory for botany

Chemistry.org - gateway to links for chemists

Eldis - development policy, practice, and research

Entrez - life sciences search engine

Google Scholar - article search

InfoMine - NFOMINE is a virtual library of Internet resources relevant to faculty, students, and research staff at the university level. It contains useful Internet resources such as databases, electronic journals, electronic books, bulletin boards, mailing lists, online library card catalogs, articles, directories of researchers, and many other types of information. INFOMINE is librarian built. Librarians from the University of California, Wake Forest University, California State University, the University of Detroit -Mercy, and other universities and colleges have contributed to building INFOMINE.

Intuit - browse by subject web resources

Math Forum - internet math library from Drexel University

National Biological Information Infrastructure - The National Biological Information Infrastructure (NBII) is a broad, collaborative program to provide increased access to data and information on the nation's biological resources.

Open Access Journals - directory of open access journals in all fields

OpenJGate - 4403 open access journals

PubMed - PubMed comprises more than 20 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites

Research Gate - large global community dedicated to science and research; science network and search engine

ScienceDirect - the world's largest electronic collection of science, technology, and medicine full-text and bibliographic information

Scirus - Scirus is the most comprehensive science-specific search engine on the Internet. Driven by the latest search engine technology, Scirus searches over 250 million science-specific Web pages

web GURU - guide to research for undergraduates