Open Access E-Books
- Directory of Open access Books (DOAB)
- IntechOpen
- National Academic Press
- Brill Books
- Book Boon
- Online Programming
- IOS Press
- MDPI BOOKS
- PROJECT GUTENBERG
- OPEN TEXTBOOK LIBRARY
- OPEN ACCESS BOOKS ON JSTOR
- SPRINGER OPEN ACCESS BOOKS
- CAMBRIDGE UNIVERSITY PRESS
- HATHITRUST
- INTERNET ACHIEVE
- OPEN LIBRARY
- MIT PRESS
- OAPEN
- OXFORD UNIVERSITY PRESS OPEN ACCESS BOOK TILES
- TAYLOR & FRANCIS OPEN ACCESS BOOKS – ROUTLEDGE
- OPEN ACCESS SCHOLARLY PUBLISHING ASSOCIATION
- CORNELL OPENA GLOBAL OPEN ACCESS PORTAL
- KARGER
