Remember, if you see something that you like but is not quite what you're looking for, then you can think about adapting it - editing it or revising it to better fit your needs.

Textbooks

BC Open Textbooks

• A collection of open textbooks managed by the University of British Columbia, freely available to use and adapt.  The collection includes FET equivalent textbooks, including a trades collection intended for use by apprentices.

LibreTexts

• Non-profit online educational resource project based at the University of California Davis.

OpenStax

• A charitable corporation set up by Rice University (USA) providing good quality, peer-reviewed, openly licensed college textbooks that are free online

Open Textbook Library

• A growing catalogue of free, peer-reviewed, and openly-licensed textbooks managed by the University of Minnesota

Pressbooks Directory

• Pressbook is a publishing platform used to create OER textbooks. This is a directory of all (nearly 2000) CC licenced and public domain books.

Saylor Academy Textbooks

• A collection of open textbooks provided by Saylor Academy, a non-profit organisation offering free and open online courses

OER Collections

California Open Online Library for Education (COOL4Ed)

• State-backed effort to reduce the cost of tertiary education by creating open textbooks and course materials

MIT OpenCourseWare

• Educational material from of all MIT's undergraduate and postgraduate courses, freely and openly available to everyone through a Creative Commons licence

OER Commons

• A public digital library of open educational resources.  Includes a career and technical education section.

Open Course Library

• A collection of high quality, free-to-use courses that you can download and use for teaching. All content is stored in Google docs making it easy to access, browse and download.

Skills Commons

• Free and open learning materials and program support materials for job-driven workforce development

Teaching Commons

• A collection of OERs from leading colleges and universities available to educators and students around the world

OER Search Engines and other tools

AIT OER Subject Index

• A growing list of OERs classified by subject and managed by AIT Library

Community College Consortium for Open Educational Resources (CCCOER) - Finding OERs

• A listing of different OER (and OA) repositories

Major OER Repositories

• A growing collection of OER and other related resources maintained as a Padlet board (don't forget to scroll right!)

The Mason OER Metafinder (MOM)

• A search engine covering 18 different OER sources

MERLOT

• Another search engine for OERs.  A neat feature is being able to enter the ISBN of a textbook and MERLOT will search for an OER equivalent.

OASIS

• Openly Available Sources Integrated Search (OASIS) is a search tool that aims to make the discovery of OERs easier

OER Search

• A video describing strategies to search for OERs

Copyright Free Content

How to find free-to-use images with Google Search

• For when you need to find images that you can use, share, or modify.

Bing: Filter images by license type

• As above, but for Bing

BBC Sound Effects

• These 16,000 BBC Sound Effects are made available by the BBC in WAV format to download for use under the terms of the RemArc Licence. The Sound Effects are BBC copyright, but they may be used for personal, educational or research purposes, as detailed in the license.

Creative Commons Image Search

• Search over 500 million openly licensed images

DALL-E

• DALL-E is an AI system that can create realistic images and art from a description in natural language.

Flickr Creative Commons

• Flickr is a photo and image sharing archive. This is a link to content available under Creative Commons licences

Free Images

• 21,000+ Free Stock Photos in 89 searchable categories. Free of charge for both commercial and personal use under an attribution licence

Internet Archive Stock Footage

• Stock video footage intended for use in other videos and licensed under a variety of licences or are in the public domain

Morgue File

•  Over 400,000 high quality, high resolution photos. Free for commercial use. No attribution required.

Pixabay

• A free-to-use website for sharing photos, illustrations, vector graphics, film footage and music

Unroyalty (YouTube)

• A YouTube channel of royalty-free music and sound effects

Unsplash

• Unsplash is a stock photograph site which uses a licence that allows users to "copy, modify, distribute and use the photos for free, including commercial purposes, without asking permission from or providing attribution to the photographer or Unsplash" Update: Unsplash has been acquired by Getty Images who have added "Unsplash+" photos, which require a subscription.

Vimeo: Creative Commons

• Browse Creative Commons licensed videos on Vimeo. Note that you can also filter your Vimeo (and YouTube) searches to include only Creative Commons-licenced videos.

Wikipedia Commons

•  A database of media files (images, sound, video) that are freely available for use with attribution

Wikipedia Public Domain Images Sources

• A Wikipedia page listing sources of public domain images on the web. CAVEAT: the presence of a resource on this list does not guarantee that all of the images in it are in the public domain and you will need to check individual licencing information