- 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. the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.

-ICI World of Journals is a basic tool recommended for every scientific journal which enables to strengthen the process of its digitalization. ICI World of Journals is the third largest international database.

- provides ready access to education literature to support the use of educational research and information to improve practice in learning, teaching, educational decision-making, and research. Directory of Research Journals Indexing is a free online service that helps you to find web resources for your articles and research.

-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.

-J-Gate is an electronic gateway to global e-journal literature. Launched in 2001 by Informatics India Limited, J-Gate provides seamless access to millions of journal articles available online offered by 11,428 Publishers. It presently has a massive database of journal literature, indexed from 36,987 e-journals with links to full text at publisher sites.

-Advanced Science Index is an indexing service that indexes publishers of scientific materials. It is aiming at rapid evaluation and indexing of all local and international scholarly scientific journals. Advanced Sciences Index provides following services with Frequency of 12-indexing round per year.