Open textbooks are free, online learning materials with Creative Commons licenses. Many of the collections will have links to the same books, but each will have a particular focus, and items you can't find in other collections.
As a partnership of the University Library and Health Information Technology and Services, it is the home for all things open at the University of Michigan—including expertise and services for open educational resources, open data, and open publications.
OpenStax is a nonprofit educational initiative based at Rice University that publishes high-quality, peer-reviewed, openly licensed college textbooks that are absolutely free online and low cost in print.
Collection of openly-licensed textbooks that been reviewed by faculty from a variety of colleges and universities to assess their quality. The Open Textbook Library is supported by the University of Minnesota Center for Open Education and the Open Education Network.
A non-commercial open textbook organization initiated at the University of California, Davis. Their collection is used across the nation as primary course textbooks and as supplemental learning resources.
An open-access textbook publishing initiative established by State University of New York libraries and supported by SUNY Innovative Instruction Technology Grants. They publish high-quality, cost-effective course resources by engaging faculty as authors and peer-reviewers, and libraries as publishing service and infrastructure.
Collection of open textbooks for a variety of subjects and specialties from the B.C. Campus OpenEd. The open textbooks have been reviewed by faculty, meet accessibility requirements, and/or include ancillary materials (quizzes, test banks, slides, videos, etc.).
OER repositories contain more than just open textbooks. Learning materials in these collections include full courses, syllabi, images, presentations, videos, simulations, and many more.
A digital public library and collaboration platform launched by the Institute for the Study of Knowledge Management in Education (ISKME). OER Commons allows searching by material types, educational or grade levels, and subject disciplines.
The Multimedia Educational Resource for Learning and Online Teaching (MERLOT) provides access to curated online learning and support materials and content creation tools, led by an international community of educators, learners and researchers.
Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of open content easier. OASIS currently searches open content from 115 different sources and contains 440,380 records.
The OAPEN Library contains freely accessible academic books, mainly in the area of humanities and social sciences. OAPEN works with publishers to build a quality controlled collection of open access books.
A collection of expertly developed educational materials – including textbooks, syllabi, course activities, readings, and assessments – for 81 high-enrollment college courses. This collection was developed by the Washington State Colleges.