The OER community is rich and varied in high-quality educational resources that are lower in cost for students. You'll find a wide range of resources on the following sites.
Columbia University's digital repository for scholarly work and research by faculty, students, staff and affiliated institutions. Deposited content is freely available to the public.
Open Educational Resources (OER) are teaching and learning materials that you may freely use and reuse at no cost, and without needing to ask permission. In OER Commons, you can search, browse, and evaluate resources in its growing collection of over 50,000 high-quality resources. OER Commons includes open textbooks, full university courses, interactive mini-lessons, simulations, adaptations of existing open work, lessons, worksheets, and activities at a variety of learning levels.
DPLA connects users to America's libraries, archives, museums, and other cultural heritage institutions. The copyright status of items vary because the collection contains many sources. However, many items are public domain or available for re-use, and there is information in a "rights" field for each item.
DOAB aims to increase discoverability of Open Access books. The foundation is based at the National Library of The Hague and includes a variety of texts in multiple languages across many disciplines.
Developed under a grant from the U.S. Department of Education, español abierto provides educational resources for teachers and learners of Spanish (including classroom activities and literature anthologies) in a variety of educational and geographical contexts including recorridos, Spanish in Texas, and Heritage Spanish, to name a few.
GALILEO Open Learning Materials brings together open educational resources throughout the University System of Georgia, including open textbooks and ancillary materials across a variety of disciplines. It is administered by Affordable Learning Georgia.
Designed by the Athabasca University Library in Canada, the OER Knowledge Cloud is created to identify, collect, preserve and disseminate available documents of enduring value to researchers, industry, government, scholars, writers, historians, journalists and informal learners.
This hub is a multi-institutional collaborative initiative to develop open-access texts for post-secondary education across higher learning. The LibreTexts approach is highly collaborative where an Open Access textbook environment is under constant revision by students, faculty, and outside experts to supplant conventional paper-based books.
The MERLOT collection consists of tens of thousands of discipline-specific learning materials, learning exercises, and content builder webpages together with associated comments, and bookmark collections, all intended to enhance the teaching experience of using a learning material. All the materials in MERLOT are reviewed for suitability for retention in the collection. Many materials undergo an extensive peer-review process.
Supported by George Mason University, the OER Metafinder can perform a simultaneous search across 20 different sources of open educational materials. It also provides a guide for 330+ organizations in accessing OER materials.
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. Its most-visited courses go from Introduction to Computer Science and Programming in Python to Topics in Mathematics with Applications in Finance.
NanoHUB is created by the NSF-funded Network for Computational Nanotechnology and provides over 1600 open teaching and learning resources: courses; animations; simulations; learning modules; podcasts; additional course tools.
The NCBI Bookshelf is provided by the National Center for Biotechnology Information, which is part of the U.S. National Library of Medicine. It contains “free online access to books and documents in life science and healthcare.
OASIS is developed at SUNY Geneseo's Milne Library. It currently searches a wide-range of open content from 88 different sources and contains 352,345 records.
The Open Course Library (OCL) is a smaller collection of shareable materials, sponsored by the Washington State Board of Education. OCL includes syllabi, course activities, readings, and assessments designed by teams of college faculty, instructional designers, librarians, and other experts. Unless otherwise noted, all materials shared are under a Creative Commons (CC BY) License and are free for downloading and editing through Google Docs.
Because OCL is sponsored by the Washington State Board of Education, all materials have undergone testing for accessibility and quality assessment.
This collection has open textbooks in a variety of digital formats. The British Columbia Open Textbook Collection is is a growing selection of open textbooks designed for a variety of subjects and specialties. The sources in this collection have been reviewed by faculty, met accessibility requirements, and/or include ancillary materials (quizzes, test banks, slides, videos, etc.).
This library contains open textbooks within a variety of disciplines that have been funded, published, and licensed to be freely used, adapted, and distributed. These books have been reviewed by faculty from a variety of colleges and universities quality assessment. The Open Textbook Library is supported by the Center for Open Education and the Open Textbook Network.
Free online courses and course materials offered by Carnegie Mellon University.
OpenStax is a nonprofit educational initiative based at Rice University with textbooks that are currently being used in 48% of colleges and universities in the U.S. and over 100 countries. OpenStax provides a variety of resources in Math, Science, Social Sciences, Humanities, and Business that are peer-reviewed, openly licensed, and free to use.
Skills Commons is supported by the US Department of Labor and provides access to free and open learning materials for job-driven workforce development.
This source provides open-access materials, including detailed grammar explanations and video examples, from the Spanish in Texas Project.
The Teaching Commons contains high-quality open educational resources from leading colleges and universities. Curated by librarians and their institutions, it includes open access textbooks, course materials, lesson plans, multimedia, and more.
TESSA is an OER repository, joined with school curriculum, and created to support teachers and teacher educators who are interested in learning approaches that engage, involve, and inspire.
Unglue is a collection of academic and non-academic openly licensed eBooks.
Wikiversity is a Wikimedia Foundation project dedicated to learning resources, learning projects, and research for use in all levels, types, and styles of education from pre-school to university, including professional training and informal learning.
The World Digital Library contains significant primary materials on histories, maps, and frontiers from countries and cultures around the world.