
Google Books is an online library and search engine that provides access to a vast collection of books, magazines, and other publications.

Project Gutenberg is a volunteer-driven digital library that offers over 60,000 free eBooks, primarily consisting of public domain works such as classic literature, historical texts, and reference materials.

ManyBooks is a digital library offering over 50,000 free eBooks across various genres, including classics from Project Gutenberg and contemporary works by self-published authors.

DOAB is a community-driven discovery service that indexes and provides access to scholarly, peer-reviewed open access books and helps users to find trusted open access book publishers.

The Open Textbook Library is a comprehensive digital repository offering over 1,600 open-access textbooks across various academic disciplines.

FreeComputerBooks.com is a website that provides links to free computer, programming, mathematics, and technical books, lecture notes, and tutorials.

OAPEN promotes and supports the transition to open access for academic books by providing open infrastructure services to stakeholders in scholarly communication.

IntechOpen is a publisher specializing in Open Access books. They offer a platform where scientific research is published and made freely available online, without financial, legal, or technical barriers for readers.

Springer is a leading global scientific, technical, and medical publisher, offering a wide range of journals, books, and other content.

JSTOR offers a growing list of Open Access ebooks from respected presses, freely available for anyone in the world to use.
