| SL | Name | Description | Access |
|---|---|---|---|
| 1. | Book online | Listing over 3 million free books on the Web | Online |
| 2. | ComputerBooks.com | Free Computer, Mathematics, Technical Books and Lecture Notes, etc. | Online |
| 3. | Directory of Open Access Books | Directory of Open Access Books is a joint service of OAPEN, OpenEdition, CNRS and Aix-Marseille Université | Online |
| 4. | ebook3000.com | Engineering Technology | Online |
| 5. | Freebookcentre.net | Free online technical books - computer science, networking, programming languages,etc. | Online |
| 6. | OAPEN | Open access for academic books by providing open infrastructure services to stakeholders in scholarly communication. | Online |
| 7. | OpenStax | Free textbooks for students. | Online |
| 8. | Freebookcentre.net | Free online technical books - computer science, networking, programming languages,etc. | Online |
| 9. | Freebookcentre.net | Free online technical books - computer science, networking, programming languages,etc. | Online |
| 10. | Freebookcentre.net | Free online technical books - computer science, networking, programming languages,etc. | Online |
| 11. | Bookfi | It is a non-profit project and is completely free with uninterrupted access to literature. | Online |
| 12. | Internet Archive | It is a non-profit library of millions of free books, movies, software, music, websites, and more | Online |