| S.No | Description | Weblink |
|---|---|---|
| 1. | Directory of Open access Books (DOAB) | VIEW |
| 2. | IntechOpen | VIEW |
| 3. | National Academic Press | VIEW |
| 4. | Brill Books | VIEW |
| 5. | Book Boon | VIEW |
| 6. | Online Programming | VIEW |
| 7. | IOS Press | VIEW |
| 8. | MDPI BOOKS | VIEW |
| 9. | CABI Books | VIEW |
| 10. | PROJECT GUTENBERG | VIEW |
| 11. | OPEN TEXTBOOK LIBRARY | VIEW |
| 12. | OPEN ACCESS BOOKS ON JSTOR | VIEW |
| 13. | SPRINGER OPEN ACCESS BOOKS | VIEW |
| 14. | CAMBRIDGE UNIVERSITY PRESS | VIEW |
| 15. | HATHITRUST | VIEW |
| 16. | OPEN LIBRARY | VIEW |
| 17. | INTERNET ACHIEVE | VIEW |
| 18. | MIT PRESS | VIEW |
| 19. | OAPEN | VIEW |
| 20. | OXFORD UNIVERSITY PRESS OPEN ACCESS BOOK TILES | VIEW |
| 21. | TAYLOR & FRANCIS OPEN ACCESS BOOKS – ROUTLEDGE | VIEW |
| 22. | OPEN ACCESS SCHOLARLY PUBLISHING ASSOCIATION | VIEW |
| 23. | CORNELL OPENA GLOBAL OPEN ACCESS PORTAL | VIEW |
| 24. | KARGER | VIEW |