http://www.eric.ed.gov : Education Resource Information Centre (ERIC) provides unlimited access to more than 1.4 million bibliographic records of journal articles and other education-related materials.
http://doaj.org: Directory of Open Access Journals (DOAJ) provides open access to 10,073 journals.
http://editlib.org : The Digital Library for Education & Information Technology facilitates learning, discovery and innovation by connecting scholarly research on Educational Technology/E-Learning with learning opportunities.
http://shodhganga.inflibnet.ac.in : The Shodhganga@INFLIBNET Centre provides a platform for research students to deposit their Ph.D. theses and make it available to the entire scholarly community in open access.
http://www.ergobservatory.info/about.html : ERGO is a project on the National Education Policy Center at the University of Colorado, Boulder. As a signatory to the Budapest Open Access Initiative, the ERGO is dedicated to the promotion and dissemination of open access (“free to read”) scholarship in education.
http://www.hindawi.com: Hindawi Publishing Corporation provides access to 436 peer-reviewed, open access journals covering all areas of Science, Technology, and Medicine, as well as several areas of Social Sciences.