Scopus offers access to more that 14,000 scholarly titles including approximately 750 conference proceedings, all journals in Medline, 400 trade publications and also approximately 500 Open Access Journals. In development for more than two years with the collaborative efforts of 300 librarians and researchers, Scopus covers the content of over 4,000 international scientific, technical, medical and social science publishers.
For information on Scopus APIs, go Elsevier website
Web of Science is the online version of the Science Citation Index, Social Sciences Citation Index and the Arts & Humanities Citation Index. Users can search 8,500 international research journals in the sciences, social sciences, arts and humanities. The Web of Science also provides cited reference searching
Bioline International provides open access to peer reviewed bioscience journals published in developing countries. These journals contain timely research on public health, international development, tropical medicine, food and nutritional security and biodiversity that would not otherwise be readily available to researchers in the developed world, or even within the country of publication.
PubMed comprises more than 24 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.