Openly Available Sources Integrated Search (OASIS) is a search tool that is being developed at SUNY Geneseo's Milne Library. It searches open educational resources on many sites.
Ted: Inspiring thinkers on a range of subjects present big ideas and lectures on a regular basis- completely CC licensed.
Khan Academy hundreds of short educational videos covering many subjects; especially strong collections in science and math.
PhET Science Simulations: These interactive tools from the University of Colorado at Boulder are mostly CC licensed.
Wikimedia Commons: The thinkers behind Wikipedia bring you images, video and music all openly licensed or in the public domain.
CLIP Information Literacy Tutorials: Find great tutorials on information and research competencies.
HippoCampus: 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.
Jamendo: Songs by musicians who want to share their music.
Critical Commons: 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.
Public Library of Science: An open publisher whose mission is to change the nature of sharing scientific research through open access.
Directory of Open Access Journals: The most comprehensive collection of open access journals in a variety of disciplines. Unfortunately, you can search by journal subject, but not by article subject.