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Open source textbooks that are written by professional content developers who are experts in their fields and undergo a rigorous peer review process. All textbooks meet standard scope and sequence requirements.
Open Textbook Library
Provides a growing catalog of free, peer-reviewed, and openly-licensed textbooks. The Open Textbook Library is supported by the Center for Open Education and the Open Textbook Network.
Links to various OER collections, compiled by OPEN Washington, an Open Educational Resources (OER) network, managed by Washington State Board for Community and Technical Colleges
A curated collection of free and open online teaching, learning, and faculty development services contributed and used by an international education community. The MERLOT Collection is made up of over 40,000 materials in 19 different material type categories.
Open SUNY Textbooks
Established by SUNY libraries and supported by SUNY Innovative Instruction Technology Grants, this initiative publishes high-quality, cost-effective resources by engaging faculty as authors and peer-reviewers, and libraries as publishing service and infrastructure.
BC Campus OpenEd
Textbooks aligned with the province's top 40 highest-enrolled subject areas, as well as trades and skills training. These textbooks are openly licensed using a Creative Commons license, and are offered in various e-book formats free of charge, or print on demand books available at cost.
Helps educators, students, and lifelong learners avoid time-consuming searches and find exactly the right materials. Search, browse, and evaluate resources in OER Commons’ growing collection of over 50,000 high-quality OER.
Galileo Open Learning Materials
Open textbooks, syllabi, and supporting materials created under Affordable Learning Georgia OER grants. Materials are licensed under various Creative Commons licenses.
1 Fixing The Broken Textbook Market report, U.S. Public Interest Research Group, 2014