Open Educational Resources (OERs): OER Respositories

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. All DOAB services are free of charge and all data is freely available.

Bookshelf provides free online access to books and documents in life science and healthcare.

Open educational resources (OER) from University of Michigan. Access a range of course materials, videos, lectures, student work and more. Nearly all of the content here is openly licensed for reuse under Creative Commons.

The University of Michigan Press is a leader in open access book publishing, and makes hundreds of its titles available as openly accessible ebooks.

OpenStax, a part of Rice University, which is a 501(c)(3) nonprofit, publishes high-quality, peer-reviewed, openly licensed college textbooks that are absolutely free online and low cost in print.

Offering over 1,000 open textbooks, the Open Textbook Library is supported by the Open Education Network.