A large user friendly OER search engine that allows for users to search by subject or by course material type (e.g. textbooks, simulations, audio).

This search engine from George Mason University is connected to 15 major OER repositories.

This repository is one of the biggest and more famous places to find and share teaching resources.

Large repository of individual teachers' content, some courses and lots of modular writings about a variety of topics.

This resource seeks to collect and distribute a variety of OER at a variety of levels and subjects.

This repository contains learning materials, software, data, and models for teaching quantitative skills in undergraduate biology courses. QUBES is developed in part by faculty at the University of Pittsburgh.

Open educational materials for K-12.

Materials in the Applied Math and Science Educational Repository are free for use and adaptation. Most resources are at the high school and community college levels.

Learning objects and lessons from the National Endowment for the Humanities. It offers a large collection of peer evaluated websites.

Open resource for faculty and librarians about Research Assignments. A research assignment is anything that requires students to engage with information resources in a critical or reflective way. This most often includes finding, retrieving, analyzing and evaluating, using and integrating, or organizing the information in order to produce new knowledge.

This blog formatted repository seeks to bring together free resources on culture and education. The list of movies here is impressive.

These are Google Docs made by Portland Community College librarians in response to requests for help from instructors.

On this pages you will find openly licensed textbooks along with supplemental material, interactive simulations, and other resources.

A collection of resources divided into humanities, social science, and STEM categories.

On this page, you will find the largest, most popular repositories of open educational resources separated by subject.

WeBWorK is an open-source online homework system for math and science courses. WeBWorK is supported by the MAA and the NSF and comes with a National Problem Library (NPL) of over 20,000 homework problems. Problems in the NPL target most lower division undergraduate math courses and some advanced courses. Supported courses include college algebra, discrete mathematics, probability and statistics, single and multivariable calculus, differential equations, linear algebra and complex analysis.

Find lectures and videos from some of the most respected instructors in the world.

Materials, mostly study skills, to support students transitioning to college.

Large library of MOOCs, some of which have material freely licensed for re-use.

Library of college-level courses from a variety of high-profile universities. Some course materials are freely licensed for reuse.

All of the learning materials presented on this site are CC licensed, but don't confuse "Learning Spaces" with the full Open University- their licensing/copyrights are different.

Open education course materials aimed at a high school level.

Miríadax is an Ibero-American MOOC platform with complete courses in Spanish for a variety of topics.

The WA Open Course Library project offers 81 of Washington's most enrolled courses. There are a lot of great readings in these course files. Great community college content

An independent search engine that indexes open education classes from places like MIT, Yale and UMass. Adds extension to your browser.

Saylor offers full courses online. It can be really helpful to use the reading lists from Saylor to find and organize your courses.

Complete courses from Carnegie Mellon University

A series of modules in the field of Psychology from Introductory courses to more advanced topics.

OERu offers a number of full courses in fields like business, economics, digital literacy, and history from partner universities around the world.

Offers complete courses composed of mostly open materials that can be copied and adapted for free. Lumen also offers partnering with institutions to manage and adapt resources for courses at a cost to students. Contact us if you would like to partner with Lumen.

Rice Connexions is providing peer reviewed, quality open textbooks with interactive components. There are some amazing textbooks available here, with more in production.

Hundreds of complete, open college-level textbooks collected by the University of Minnesota.

A curated collection of open textbooks, many reviewed by British Columbia faculty.

A project of the Wikimedia Foundation, this collection of group written textbooks in a variety of sources follows rules similar to Wikipedia.

Find the full text of classics and public domain works from the first massive ebook creating organization in existence. Nothing fancy here, just files with the full text.

Some books presented in this mass conglomeration of scanned books are fully available, most are excerpted.

A list of open textbooks in various subdisciplines of Mathematics approved by the AIM editorial board.

Open Textbooks on Aviation from the Federal Aviation Administration (US).

Free medical textbooks.

Lyryx offers high-quality open textbooks in the fields of accounting, mathematics, and economics. They also have optional added (paid) resources such as homeworks and quizzes to accompany the open textbooks.

Bloomsbury is a well-respected and long time UK publisher who has released some of their academic titles for open access/open education.

Inspiring thinkers on a range of subjects present big ideas and lectures on a regular basis- completely CC licensed.

Hundreds of short educational videos covering many subjects; especially strong collections in science and math.

These interactive tools from the University of Colorado at Boulder are mostly CC licensed.

The thinkers behind Wikipedia bring you images, video and music all openly licensed or in the public domain.

HippoCampus, a project of the Monterey Institute of Technology and Education (MITE), is full of high-quality resources in a variety of subjects. It is aimed at high school and college level users.

Songs by musicians who want to share their music.

A social network of video producers. This is a great place to look for a wide variety of content- some is completely open for redistribution, some is open access.

A community of people who seek to promote the use of media in teaching. The materials posted here are mostly presented using Fair Use guidelines.

Creative Commons has created this really useful search engine that lets you search for resources that are CC licensed. The image search is the most useful.

We've put together this page on the Public Domain and how to find images and artwork that are in the Public Domain. Included are several resources for searching and finding images that are in the Public Domain.

You can download, share, and reuse millions of the Smithsonian’s images. With new platforms and tools, you have easier access to nearly 3 million 2D and 3D digital items from the Smithsonian collections

Overe 1 million photos that can be freely downloaded and used for either commercial and non-commercial purposes, no permission needed (though attribution is appreciated!).