Directory of Open Access journals - https://doaj.org/
INTECH Open Access Journals - https://www.intechopen.com/books
Wiley Open Access Journals - http://www.wileyopenaccess.com/index.html
Taylor & Franics - https://www.tandfonline.com/
Free Medical Journals - http://www.freemedicaljournals.com/
E-journals - http://www.e-journals.org/
Journal of Digital Information - https://journals.tdl.org/jodi/index.php/jodi
Scientific Research Open Access - https://www.scirp.org/journal/Index.aspx
Computational Linguistics (MIT) - https://www.mitpressjournals.org/loi/coli
Strategian (Multi disciplinary) - https://www.strategian.com/full-text-articles/
Plos - https://plos.org/
Open Access Library - http://www.oalib.com/
South Asia Archive - http://www.southasiaarchive.com/
Free Full PDF - http://www.freefullpdf.com/
American Physical Society - https://journals.aps.org/browse.html
arXiv - https://arxiv.org/
Science direct - http://cuklis.weebly.com/sciencedirect.html
Cambridge journals - http://cuklis.weebly.com/cambridge-university-press.html
American Chemical Society - https://pubs.acs.org/
JSTOR - https://www.jstor.org/