| 1. | BCcampus Open Education | https://open.bccampus.ca/browse-our-collection/find-open-textbooks/ |
| 2. | Bloomsbury Open | https://www.bloomsburycollections.com/open-access |
| 3. | Cambridge Journal | https://www.cambridge.org/core |
| 4. | Directory of Open Access Books | https://www.doabooks.org/ |
| 5. | Directory of Open Access Journals | https://doaj.org/ |
| 6. | Elsevier Open Access Journals | https://www.elsevier.com/open-access/open-access-journals |
| 7. | Google Scholar | https://scholar.google.com/ |
| 8. | IntechOpen | https://www.intechopen.com/ |
| 9. | OAPEN | https://www.oapen.org/ |
| 10. | OMICS Online | https://www.omicsonline.org/open-access-journals-list.php |
| 11. | Open Book Publishers (OBP) | https://www.openbookpublishers.com/ |
| 12. | Open Texbook Library | https://open.umn.edu/opentextbooks |
| 13. | Oxford Open Access Journals | https://academic.oup.com/pages/open-research/open-access |
| 14. | PLOS | https://plos.org/ |
| 15. | Project Gutenberg | https://www.gutenberg.org/ |
| 16. | Pubmed Central (PMC) | https://pmc.ncbi.nlm.nih.gov/ |
| 17. | ResearchGate | https://www.researchgate.net/ |
| 18. | Scientific Research Publishing (SCIRP) | https://www.scirp.org/journal/Index |
| 19. | Springer Nature Open Access Journals | https://www.springernature.com/gp/open-science/journals-books/journals |
| 20. | Wiley Open Access Journals | https://authorservices.wiley.com/author-resources/Journal-Authors/open-access/about-our-fully-gold-open-access-journals/index.html |