OER - Open Educational Resources

Animal Photos is a great source of Creative Commons licensed photos of animals. All of the photos are categorized by animal. Each image indicates the type of Creative Commons license associated with the picture.

Art and architecture images photographed by art historian and visual resources curator Allan Kohl.

Open Source Multimedia, Open Source Sound, Open Source Photos

Enhanced search of Flickr content. Limit to Creative Commons.

The Digital Public Library of America brings together the riches of America's libraries, archives, and museums, and makes them freely available to the world.

A great feature from the popular photo sharing site Flickr where institutes such as The Library Of Congress, Powerhouse Museum, Brooklyn Museum, Smithsonian Institution, and various users can post and share images that have no known copyright restrictions.

Search overlay to Flickr. Retrieves images more images by using related tags. Select "Advanced" to limit to Creative Commons content.

To find images that can be reused and remixed use Google's Advanced Image search options. To use the usage rights filter option, select "advanced image search" on the main Google Images page. Once in the "advanced image search" page, you will find the usage rights options at the bottom of the page. In the usage rights menu you can select one of four options; "labeled for reuse," "labeled for commercial.

A good collection of original pictures from old books that are no longer copyrighted and considered public domain. This is a great place to find obscure and unique pictures and illustration.

Another fantastic location to locate high resolution digital stock photography. The site offers thousands of free images almost all that have no restrictions or agreements attached. In addition the site requires no login to download the high quality files.

With the launch of NGA Images, the National Gallery of Art implements an open access policy for digital images of works of art that the Gallery believes to be in the public domain. Images of these works are now available free of charge for any use, commercial or non-commercial. Users do not need to contact the Gallery for authorization to use these images. They are available for download at the NGA Images website

The Open-i project aims to provide next generation information retrieval services for biomedical articles from the full text collections such as PubMed Central.

Public domain images, royalty free stock photos, copyright friendly free images. Not copyrighted, no rights reserved. All pictures on this site are explicitly placed in the public domain, free for any personal or commercial use.

A repository for free public domain images. Download high quality HD photos or upload your own. Make money from your hobby, gain popularity and improve your photographic and graphic skills. If you intend to use an image you find here for commercial use, please be aware that some photos do require a model or property release. Pictures featuring products should be used with care.

Stock Exchange The best site to locate free stock photo's. The site contains in our opinion the best site to locate free stock photo's. The site contains thousands of free images that can be used. While many of the pictures are free some of the images do require written permission first.

Searches only Creative Commons content in Flickr. Additional tools for blogs and websites, including resizing tool, photo credit builder, and code generator.

Yahoo Images has an option similar to Google's for finding Creative Commons licensed images. When you search for images using Yahoo's image search tool, you can select filters to refine results to show only images that are licensed under Creative Commons. The filters allow you to select filters for images that can be used for commercial purposes or images that are licensed for remixing and building upon.

Open Clip Art Library Public domain contemporary graphics contributed by users.

Open Icon Library Open collection of icons.

Wikimedia Commons - Crystal Clear Icons Icon collection in the Wikimedia Commons.

Icon collection in the Wikimedia Commons.

This library contains recordings ranging from alternative news programming, to Grateful Dead concerts, to Old Time Radio shows, to book and poetry readings, to original music uploaded by our users. Many of these audios and MP3s are available for free download. Check our FAQ for more information.

The purpose of the Open Video Project is to collect and make available a repository of digitized video content for the digital video, multimedia retrieval, digital library, and other research communities.