The National Digital Library of India (NDLI) is an extensive online repository developed by the IIT Kharagpur, that provides free access to millions of academic resources, including books, articles, and multimedia content, to learners and educators across the country.

The Global Digital Library (GDL) provides free, multilingual educational resources for early-grade learners, aiming to enhance literacy worldwide by making quality content accessible to all.

The UNESDOC Digital Library offers free access to a vast collection of UNESCO’s publications and documents, promoting global education, culture, and science by making knowledge widely available.

Open Library is a digital platform that provides free access to millions of books, allowing users worldwide to read, borrow, and explore a vast collection of literary works.

Oxford Owl Library offers free access to a wide range of eBooks and educational resources, supporting children's learning and literacy with expertly curated content for home and school use.

Z-Library is a vast digital resource offering free access to millions of books and articles, dedicated to making knowledge easily accessible to readers and researchers globally.

The Open Research Library is a digital platform that offers free access to a wide array of academic books and research materials, aiming to make scholarly knowledge universally accessible to researchers and students.

The Marin Library provides free access to a diverse collection of books, digital resources, and films catering to students and researchers across the world.

Keystone Digital Library streamlines different knowledge stratas in one place, facilitating knowledge sharing within its academic community.