The University of Massachusetts Amherst

OER Repositories

Vista de la Biblioteca Vasconcelos

Stacks of the José Vasconcelos Library in Mexico City

The following are links to aggregators containing free, open source, creative commons licensed, or public domain educational material.

OER Metafinder

A single search engine of dozens of open access and open educational databases all in one. A Google for OER!

Digital Public Library of America (DPLA)

Contains links to a wide range of multimedia objects form libraries, archives and museums around the United States.

The copyright status of items vary because it is collected from many sources. However, many items are public domain or available for re-use, and there is information in a "rights" field for each item.

Live Lingua

A collection of U.S. Government created public domain language eBooks and a/v resources for almost every language.


Free online peer-reviewed publication service for medical resources such as teaching materials, assessment tools and faculty development.

Promotes educational collaboration through the open exchange of scholarly educational resources.

Users can download and utilize any and all of the published resources for educational purposes without legal infringements.


Merlot "is a curated collection of free and open online teaching, learning, and faculty development services."

Links to online learning materials are collected here along with assignments and comments to enhance the teaching experience of an exercise.


Provides over 1600 open teaching and learning resources: online presentations; course material; learning modules; podcasts; simulation tools.

Created by the NSF-funded Network for Computational Nanotechnology.


Openly Available Sources Integrated Search (OASIS) is a search tool developed by SUNY Geneseo, in consultation with Alexis Clifton, SUNY OER Services Executive Director, that aims to make the discovery of open content easier. OASIS currently searches open content from 73 different sources and contains 171,998 records.

OER Commons

A repository of OERs from many disciplines in multiple formats including textbooks, syllabi, activities, video, images and more.

Open Course Library 

Range of manterials including syllabi, course activities, and assessments created by faculty, instructional designers, librarians, other experts. Some of these materials are intended to be paired with textbooks.

This is a smaller collection, but is sponsored by the Washington State Board of Education and therefore the materials have undergone testing for accessibility and assessed for quality.

Unless otherwise noted, all materials are shared under a Creative Commons (CC BY) license.and are available for download and editing via Google Docs.

Open Learning Initiative

Free online courses and course materials offered by Carnegie Mellon University.

Skills Commons

A repository of OER supported by the U.S. Department of Labor’s Trade Adjustment Assistance Community College and Career Training (TAACCCT) program that lets you browse by material type, discipline, credential type and more.

Teaching Commons

A showcase of high-quality open educational resources from leading universities. 

Curated by librarians and their institutions and hosted by bepress, the Teaching Commons includes open-access textbooks, course materials, lesson plans, multimedia, lectures, k-12 materials, and more.

TESSA (Teacher Education in Sub-Saharan Africa)

A bank of OER, linked to the school curriculum, and designed to support teachers and teacher educators in developing active approaches to learning. The network is co-ordinated by The Open University, UK. Contains links to other Africa-centered OER.

Unglue It

A collection of openly licensed eBooks on a variety of academic and non-academic topics.


An evolving online community intended for the planning of education projects linked with the development of free content and the development of free content on WikiEducator for free learning.