Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines.
ResearchGate is a social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators.
EBSCO is the leading provider of research databases, e-journals, magazine subscriptions, e-books and discovery service to libraries of all kinds.
Scribd is a digital library, e-book and audiobook subscription service that includes one million titles. Scribd hosts 60 million documents on its open publishing platform.
The CiteFactor server provides indexing of major international journals and proceedings. Author can get information about international journal impact factor, proceedings (research papers) and information on upcoming events.
PubsHub is a database containing comprehensive details on peer-reviewed medical journals and academic conferences for those interested in scholarly publishing or presentation.
Ulrich’s is named after its originator, Carolyn Farquhar Ulrich, the Head of Periodicals at the New York Public Library. Ulrich’s was first published in 1932 as ” Periodicals Directory: A Classified Guide to a Selected List of Current Periodicals Foreign and Domestic .”
CiteSeerx is an evolving scientific literature digital library and search engine that has focused primarily on the literature in computer and information science.
UNIVERSE DIGITAL LIBRARY is an innovative digital library that contains academic resources of engineering, medical, business, science, Islamic and general reference books, theses, dissertations and journals with built in software tools.
An e-journal closely resembles a print journal in structure: there is a table of contents which lists the articles, and many electronic journals still use a volume/issue model, although some titles now publish on a continuous basis.