Textbooks and Repositories

Search Tools


There are many ways to find OER. We have listed below some of the most common tools and popular repositories to find open, free, or affordable resources, but if you are having trouble, we suggest reaching out to your local OER representative. 


Since 2012, OpenStax, as an educational initiative out of Rice University, has been breaking down barriers to education by publishing high-quality and peer-reviewed openly licensed textbooks and supplemental educational materials for a wide range of subjects. OpenStax Textbooks are made available instantly and permanently in a variety of formats to accommodate for different devices and situations. 

Open Textbook Library

The Open Textbook Library, from the University of Minnesota and sponsored by the Open Education Network, is an openly licensed textbook repository providing a “comprehensive referatory” of a growing library of hundreds of openly-licensed textbooks. 


Are you an instructor, student, librarian, or just interested in free textbooks? The Pressbooks directory offers a myriad of OER in a variety of formats from pdfs to mobi (for Kindle) to epub and other open formats.


OER Commons

The OER Commons is a searchable database from the Institute for the Study and Knowledge Management in Education.

OASIS (Openly Available Sources Integrated Search)

OASIS is a database and user-friendly search tool from SUNY Geneseo’s Milne Library. 


Merlot is a project that was started in 1997 by the California State University system. The repository includes thousands of resources contributed by members, including original content and links to resources found through other platforms.

Open Textbooks Directory & OpenEd Resources

BCcampus Open Textbooks & BCCampus OER Directory collect resources created, reviewed, or adopted by instructors at British Columbia universities. Materials can be searched by accessibility features, inclusion of ancillary materials, or faculty review as well as whether they have been adopted by BCCampus courses.

Teaching Commons

The Teaching Commons brings together high-quality open educational resources from leading colleges and universities. Curated by librarians and their institutions, the Teaching Commons includes open access textbooks, course materials, lesson plans, multimedia, and more.


Lumen Learning

Lumen’s affordable course materials are designed to strengthen learning using open educational resources (OER). They provide high quality, interactive learning content, online homework, and personalized feedback to help them study and learn more effectively, with plenty of opportunities to engage students in active learning. Lumen Learning applies learning science principles and analyzes learning data to identify where students struggle and make targeted improvements that strengthen learning. Lumen Learning offers course materials on over 50 college courses, digital courseware, and professional development opportunities for educators. 


The mission of the LibreTexts project is to unite students, faculty and scholars in a cooperative effort to develop an easy-to-use online platform for the construction, customization, and dissemination of open educational resources (OER), particularly for courses relevant to academic programs, to reduce the burdens of unreasonable textbook costs to our students and society.

Khan Academy

Khan Academy’s mission is to “provide a free, world‑class education for anyone, anywhere” offering K-14 courses on computing, humanities, science, math, and more. Material for each class includes interactive exercises, videos, and a personalized learning dashboard for teachers and students. 

MIT Open Courseware

Massachusetts Institute of Technology OpenCourseware (OCW) offers over 2500 courses for educators, students, and self-learners alike from professors at MIT. MIT OpenCourseWare is a web-based publication of virtually all MIT course content. OCW is open and available to the world and is a permanent MIT activity. Through OCW, educators improve courses and curricula, making their schools more effective; students find additional resources to help them succeed; and independent learners enrich their lives and use the content to tackle some of our world’s most difficult challenges, including sustainable development, climate change, and cancer eradication.