There are many resources and repositories for high-quality OERs, so finding affordable course materials is easier than ever! View subject-specific repositories below.
General
OER Commons is a public digital library of open educational resources. Explore, create, and collaborate with educators around the world to improve curriculum.
The works included in the collection have all been previously published in print by the partnering university presses and are now being made openly available in digital form to read and reuse at no cost. Each title has undergone a rigorous selection and quality certification process that allows readers and users of this collection to trust the veracity of the content made available.
All Libretexts libraries are accessible to everyone via the internet, completely free.
Free and flexible textbooks and resources.
The MERLOT system provides access to curated online learning and support materials and content creation tools, led by an international community of educators, learners and researchers.
Free videos on a wide variety of topics.
GALILEO Open Learning Materials brings together open educational resources throughout the University System of Georgia, including open textbooks and ancillary materials.
Scroll to the bottom of the page to change the usage rights filter to search for free and open materials. For images, any search term will do. For textbooks, include "open or e textbook" in your search terms.
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.
Search through photographs, oral histories, museum objects, artwork and government documents in a library that strives to maximize access to shared history, culture and knowledge.
Creative Commons is an American non-profit organization and international network devoted to educational access and expanding the range of creative works available for others to build upon legally and to share.
View a collection of open textbooks applicable to courses with high-enrollment, including trade and tourism.
Search open textbooks and course materials across disciplines, sponsored by a collaboration between the CSU, UC and CCC.
Free textbooks for accounting, business, STEM, social sciences, writing & communication, and more.
The open textbooks have been published by the University of Minnesota Libraries Publishing and are licensed to be freely used, adapted, and distributed.
Courses
With powerful courseware and teaching tools, we make it easy to inspire deeper learning for each and every student.
Free courses with interactive content from MIT OpenCourseWare and MITx courses.
Free interactive simulations for science and math.
The Open Course Library (OCL) is a collection of shareable course materials, including syllabi, course activities, readings, and assessments designed by teams of college faculty, instructional designers, librarians, and other experts.
Math, Science, Engineering, Computing, Economics and a bit of Art/History activities and exercises for self-assessment for intro college level courses.
Humanities and Social Sciences
We are the leading independent Open Access publisher in the Humanities and Social Sciences in the UK.
This is a curated list of over 60 social work textbooks available at OER repositories from October 2021 conducted by Matt DeCarlo and Anne Marie Gruber.
Open-access journals, books, and other resources for teachers who use writing in their courses.
Art
Over 375,000 high-res art images searchable by artist, material, geography and period (No Rights reserved).
Search over 45,000 high-resolution art images available to scholar, educators and the general public to support academic research and teaching by nurturing artistic appreciation.
View over 300,000 high-resolution art images searchable by artist, material, geography, period, color and technique (No Rights Reserved).
Discover the digital archive of the Museum of Modern Art’s exhibition history, including primary documents, an index of participating artists and catalogues. Please note: the MOMA’s Art Collection is separate and is neither free nor open.
Science and Health
Browse journal articles in diverse scientific subject areas.
Search through peer-reviewed health education resources.
View a free full-text archive of biomedical and life sciences journal literature, available from the National Institutes of Health’s National Library of Medicine (NIH/NLM).
Business
Review Information Systems for Business and Beyond accessible textbooks and supplemental materials.