DOAJ - Directory of Open Access Journals
https://doaj.orgDOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. All DOAJ services are free of charge including being indexed. All data is freely available. → Why index your journal in DOAJ? → How to apply. Apply now. Funding. DOAJ is independent. All support is via donations.
Sci-Hub:
https://sci-hub.seThe goal of Sci-Hub is to provide free and unrestricted access to all scientific knowledge ever published in journal or book form. Today the circulation of ...
Journals for Free
www.journals4free.comNov 30, 2020 · Journals for Free (J4F) provides a large database of links to free scientific journals available on the web. Journals can be searched using free text and filtered by category, language and presence on other databases.