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The following resources contain open content, meaning that you can freely access and make use of the materials by providing a direct link. However, some resources may not allow for adaptations, meaning you can not download, modify, and repurpose the content. Check the licensing for each resource you use and when in doubt, use a direct link.
Openly Available Sources Integrated Search (OASIS)
Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of open content easier. OASIS currently searches open content from 52 different sources and contains 155,375 records.
Searches 16 OER repositories in real-time, returning the top several hundred or so relevant hits from each site. Created by George Mason University.
Enter an ISBN number and find free online course materials related to a book.
Additional PSU Resources
OER by Discipline
Suggested OER resources, organized by subject area
PSU Image Guide
This guide focuses on finding, and ethically using images, as well as image collections that are openly licensed for nonprofit/educational use
Copyright & Fair Use
More information on the topics of Copyright and Fair Use
An open access textbook publishing initiative established by Portland State University library. PDXOpen publishes open access textbooks designed for PSU courses.
Open Textbook Library
A consortium of higher ed institutions and systems has networked to support the use of OER within their programs. Supported by the University of Minnesota Center for Open Education within the College of Education and Human Development, the library of textbooks pulls titles from multiple sources, including many others in this list.
An initiative of Rice University with free learning modules and textbooks developed and peer-reviewed by educators.
Open Book Publisher
An Open Access publisher in the Humanities and Social Sciences in the UK: run by scholars who are committed to making high-quality research freely available to readers around the world.
Curated collection of open textbooks for 40 high enrollment post-secondary subject areas. Includes reviews and up to date content.
Open SUNY Textbooks
The latest publication in this pilot effort by the State University of New York libraries is Writing in College: From Competence to Excellence, which joins 14 other titles written by faculty and published by the libraries.
This effort to digitize cultural works has been plugging away at its mission since 1971, when it undertook the creation of an electronic version of the Declaration of Independence, item No. 1 in its collection. Most of the contents are public domain books — both the obscure and the beloved. On any given day nearly 100,000 copies of books are downloaded from the site.
Promising "open books for an open world," this site, which is hosted by the Wikimedia Foundation, offers 2,900 textbooks, categorized by subject, completion status and reading level. Many of the books are available for download as PDF files.
Open Streaming Videos
YouTube Education University
Browse by disciplinary category to find instructional videos (mostly lectures).
Youtube provides a Creative Commons filter.
RefSeek Educational Video Sites
RefSeek has a list of 25 resources for free educational videos. Most sites offer their videos free of charge and registration.
Moving Image Archive
Over a million free movies, films, and videos uploaded by users to Internet Archive. Many but not all of these videos are available for free download; check for the permissions information that is included in the video description to determine whether you'll need to contact the producer for permissions.
C-Span Video Library
The C-Span Video Library is comprised of streaming video with indexing and brief descriptions. Closed cations available.
A large collection of open syllabi, lesson plans, assignments, learning objects, modules, textbooks, and more created by educators around the world.
MERLOT - Multimedia Educational Resources for Learning and Online Teaching
A curated collection of free and open online teaching, learning, and faculty development services contributed and used by an international education community.
Open Course Library
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, from Washington State Board for Community and Technical Colleges.
Online courses sponsored by the Saylor Foundation, including many that are peer reviewed and offer open access online teaching materials.
MIT Open Courseware
MIT OCW is a web-based publication of virtually all MIT course content, including syllabi, reading lists, and quizzes.
Khan Academy offers practice exercises and instructional videos on a variety of subjects
Open Education Consortium
A search engine for OERs.
Free learning modules and course materials from the U.K.
The Orange Grove
The Orange Grove is a repository of resources for instructors to use, remix, share, and contribute to.
Images and information for over 7,000 advertisements printed in U.S. and Canadian newspapers and magazines between 1911 and 1955. Ad*Access concentrates on five main subject areas: Radio, Television, Transportation, Beauty and Hygiene, and World War II.
Creative Commons Search
Convenient access to search services provided by other independent organizations. Not all resources will have been distributed with a CC license. You should always verify that the work is actually under a CC license by following the link.
Europeana is a single access point to millions of books, paintings, films, museum objects and archival records that have been digitised throughout Europe.
Freely usable images drawn from the collections of numerous cultural heritage institutions including national museums and libraries.
Getty Open Content
All images of public domain artworks in the Getty’s collections. Roughly 4,600 high-resolution images of the Museum’s collection free to use, modify, and publish for any purpose.
New York Public Library Digital Gallery
"NYPL Digital Gallery provides free and open access to over 800,000 images digitized from the The New York Public Library's vast collections, including illuminated manuscripts, historical maps, vintage posters, rare prints, photographs and more." Some of the images are subject to Terms and Conditions.
Travelers in the Middle East Archive. Contains documents of travelers to the Middle East in the 18th and 19th centuries.
U.S. Government Photos and Images
Some of these photos are in the public domain or are U.S. government works and may be used without permission or fee. However, some images may be protected by license or copyright. You should check the permissions on each image. Search by keyword and then use the "images" limiter on the result screen.
A portal from the Wikimedia foundation that hosts openly licensed and public domain images and media.
The Noun Project
The Noun Project is a website that aggregates and catalogs symbols that are created and uploaded by graphic designers around the world. Many are Creative Commons.