Open Access Repositories store copies of scholarly and research materials that are made available for public use. They are usually maintained by academic institutions and sometimes libraries. Repositories may contain text, data, presentations, and other materials.
If you would like more information on what Open Access Repositories are and how they can be utilized, check out this article from Science Direct.
To evaluate the content in an open access repository, look for these clues:
(The University of Albany, Evaluating Web Content: Open Access Repositories,2024)
"The Directory of Open Access Journals is a community-curated online directory that indexes and provides access to open access journals". (Directory of Open Access Journals, 2023)
Below you will find some Open Access Browser Extensions
Open Access Browser Extensions
Available as a browser extension, you can use the Open Access Button to find open access versions of articles by searching by title, DOI, URL, and more.
Available as a browser extension, Unpaywall looks for open access versions of published articles that have a DOI.