"Open Educational Resources are teaching, learning, and research resources that reside in the public domain or have been released under an intellectual property license that permits their free use and repurposing by others. OER include full courses, course materials, modules, textbooks, streaming videos, tests, software, and any other tools, materials, or techniques used to support access to knowledge." - Hewlett Foundation
BCcampus OpenEd – a collection of open textbooks created by BCcampus
Directory of Open Access Books (DOAB) – a collection of peer reviewed open access books with Creative Commons licenses
InTech – an open access publisher of books and journals in science, technology and medicine
Libre Texts – a multi-institutional collection of higher learning textbooks
Open Textbook Library – an aggregation of openly licensed textbooks
Open TextBook Store – a catalog of open textbooks collected by educators to make open textbooks more easily adoptable in courses
OpenStax CNX– an extension of OpenStax, a repository of open access textbooks and curricular materials
Search Multiple locations
Search for OER across multiple repositories in the Mason OER Metafinder.
Mason OER Metafinder is searching well-known OER repositories like OpenStax, OER Commons, MERLOT but also sites like HathiTrust, DPLA, Internet Archive and NYPL Digital Collections where valuable but often overlooked open educational materials may be found.