Check-out this free online databases to give you more sources of information for your research and study. Just click the image/logo below for your preferred research database.
Arxiv e-Print Archive–The arXiv e-Print Archive has been around since 1991 and is a well-known resource in the fields of mathematics and computer science. It is run by Cornell University Library and now offers open access to more than one million e-prints.
Biomedcentral – BMC has an evolving portfolio of some 300 peer-reviewed journals, sharing discoveries from research communities in science, technology, engineering and medicine. In 1999 we made high quality research open to everyone who needed to access it – and in making the open access model sustainable, we changed the world of academic publishing.
CIA World Factbook – is a little different from the other resources on this list in that it is not an online journal directory or repository. It is, however, a highly useful research database for academics in a variety of disciplines. All the information is free to access, and it provides facts about every country in the world, including information about history, geography, transportation, and much more.
Core – CORE’s mission is to aggregate all open access research outputs from repositories and journals worldwide and make them available to the public. In this way CORE facilitates free unrestricted access to research for all.
dblp Computer Science Bibliography– is an online index of major computer science publications. It provides access to both free access articles and those behind a paywall, you can limit your search to only full-text articles. The site indexes more than three million publications, making it a useful resource in the world of computer science.
Digital Library of The Commons –Run by Indiana University, (DLC) Repository is a multidisciplinary journal repository that allows users to check thousands of free and open access articles from around the world. The DLC provides full-text articles, papers, and dissertations. This site contains an author-submission portal; an Image Database; the Comprehensive Bibliography of the Commons; a Keyword Thesaurus, and links to relevant reference sources on the study of the commons.
EconBiz – For students, researchers and teachers EconBiz offers orientation and help in the search for articles, working papers, e-books and more. A service made by Leibniz Information Centre for Economics, it offers access to full texts online, with the option of searching for open access material only.
ERIC– The Education Resources Information Center (ERIC), of the Institution of Education Sciences, allows you to search by topic for material related to the field of education. Links lead to other sites, where you may have to purchase the information, but you can search for full-text articles only.
OpenDoar – the Directory of Open Access Repositories, is a comprehensive resource for finding open access journals and articles. Using Google Custom Search, OpenDOAR combs through open access repositories around the world and returns relevant research in all disciplines.
Paperity Open Science Aggregated – is the first multi-disciplinary aggregator of Open Access journals and papers, “gold” and “hybrid”. It gives readers easy and unconstrained access to thousands of journals from hundreds of disciplines, in one central location; helps authors reach their target audience, disseminate discoveries more effectively and maximize research impact; raises exposure of journals, boosts their readership and encourages new manuscript submissions.
Public Library of Science – (PLOS) is a big player in the world of open access science. Publishing seven open access journals, the nonprofit organization is committed to facilitating openness in academic research. According to the site, “all PLOS content is at the highest possible level of open access, meaning that scientific articles are immediately and freely available to anyone, anywhere.”
Science Open– is a discovery platform with interactive features for scholars to enhance their research in the open, make an impact, and receive credit for it. They provide context building services for publishers, to bring researchers closer to the content than ever before.
Social Science Research Network – (SSRN) is a collection of papers from the social sciences community. The site offers more than 700,000 abstracts and more than 600,000 full-text papers.There is not yet a specific option to search for only full-text articles, but because most of the papers on the site are free access, it is not often that you encounter a paywall.