searches for scholarly literature from sources: articles, theses, books, abstracts and court opinions from academic publishers, professional societies, repositories, universities and other web sites.
provides a quality-assured listing of open access repositories around the world. It maintains a comprehensive and authoritative list of institutional and subject-based repositories.
provide free access to digital library of Internet sites and other cultural artifacts such as free books, movies, software, music, websites, and more.
provides free access to full-text scholarly articles and other research from hundreds of universities and colleges worldwide.
is a list of subject respositories taken from the Open Access Directory. An online archive containing works or data associated with these works of scholars in a particular subject area.
is powered by a database of 100 million scholarly papers. Of these, about 16 million have links to fulltext open access, making it the largest open database of legal Open Access.
gathered about 30 million books. Search millions of book records and narrow results by facet, or search across the full text of 1 million scanned books.
