Open Educational Resources

Open Educational Resources (OER) are freely accessible, openly formatted and openly licensed documents and media that are useful for teaching, learning, educational, assessment and research purposes.

Books

• http://www.opentextbookstore.com - few text books, CC-BY-NC-SA and CC-BY-SA
• Open Course Library

Organizations

• http://oerpub.org/ - OERPUB is creating innovative open-source tools for authoring, adapting, remixing, and publishing open education resources and then delivering them to the web, mobile, tablet, and print.

Germany

• Schulbücher - wie man es besser machen könnte