A broad collection of open-access scholarly articles across various fields.

https://www.oalib.com/

Thousands of academic peer-reviewed books from leading publishers.

https://www.doabooks.org/

One of the world’s most voluminous search engines for academic web resources.

https://www.base-search.net/en/index.php

A selection of peer-reviewed journals across disciplines.

https://www.elsevier.com/open-access/open-access-journals

Directory of Open Access Journal - https://doaj.org/

ERIC - Education Resources Information Center – https://eric.ed.gov/

Taylor and Francis Online - https://www.tandfonline.com/openaccess/openjournals

CORE (COnnecting REpositories) - https://core.ac.uk/

Springer Nature - https://www.springernature.com/

Open Access Research Journal of Science and Technology - https://www.oarjst.com/

JSTOR Open Access - https://about.jstor.org/oa-and-free/open-access-journals/

Sage Journals Open Access -  https://www.sagepub.com/journals/open-access