Open Access Resources: These are research materials made available to the general public, free of charge: data and datasets, books and articles, including scholarly research articles.  This is not the same thing as public domain works, or those items that have fallen out of copyright protection; open access authors have chosen to share freely, so anyone can use the works legally without permission or fees. (https://libguides.cmich.edu/web_research/oa). Some of them are as follows:

1. Directory of Open Access Journals (DOAJ)

2. e-GyanKosh

3. Elsevier open access journals

4. e-PG Pathshala

5. NMEICT

6. NPTEL

7. Open Journal Access System (OJAS)-INFLIBNET

8. Shodh Ganga-INFLIBNET

9. Shodh Gangotri- INFLIBNET

10. e-Pustakdwar

National Digital Library of India

DULS(Delhi University Library System) Subject wise Databases

ERIC – Education Resources Information Center

Infoport

Institute of LIfe Long Learning

MOOC

NMEICT

NPTEL

Open Journal Access System (OJAS)-INFLIBNET

Open Access Text Books

2. • Directory of Open Access Books (DOAB)

   • Google Books

   • Project Gutenberg

   • Metamuseum.org

   • Hathi Trust Digital Library

   • https://bookboon.com/

   • https://open.umn.edu/opentextbooks

   • https://www.opentextbookstore.com/

   • https://catalog.flatworldknowledge.com/

   • https://milneopentextbooks.org/

   • https://openstax.org/

   • https://drc.ohiolink.edu/

   • http://textbookrevolution.org/index.php/Main_Page

   • https://aimath.org/ :Mathematics

   • https://nobaproject.com/ :Psychology

   • https://www.freetechbooks.com/     :Computer Science

   • https://www.americanyawp.com/ :American History

Sakshat

Spoken Tutorial

Sugamya Pustakalaya

Swayamprabha

Talks to teacher

Virtual Lab