- National Digital Library of India https://ndl.iitkgp.ac.in/
- E-shodhgang https://shodhganga.inflibnet.ac.in/a
- N-LIST https://nlist.inflibnet.ac.in/
- e-pg pathshala https://epgp.inflibnet.ac.in/
- NPTEL https://nptel.ac.in/
- SWAYAM https://swayam.gov.in/
- SWAYAM PRABHA: EDUCATINAL CHANNEL https://www.swayamprabha.gov.in/
- eGyanKosh https://egyankosh.ac.in/
- DIRECTORY OF OPEN ACCESS BOOKS https://www.doabooks.org/
- Google BOOKS https://books.google.com/
- PDFDRIVE https://welib.org/
- PROJECT GUTENBERG https://www.gutenberg.org/
- OPEN LIBRARY https://openlibrary.org/
- kids power https://www.kidpower.org/books/
- FORGOTTEN BOOKS https://www.forgottenbooks.com/en
- INTERNET ARCHIEVE https://archive.org/
- SPRINGER JOURNALS https://www.sciencedirect.com/browse/journals-and-books
- SCIENCE ALERT https://scialert.net/journals.php
- Directory of Open Access Journals https://doaj.org/
- CHMK Library Calicut Univeristy https://library.uoc.ac.in/en/
- Kerala University Library https://kulib.in/
- M.G University Library https://library.mgu.ac.in/
- CUSAT Library http://library.cusat.ac.in/
- Kannur University Library http://hgcl.kannuruniversity.ac.in/
