Open Courseware Consortiumsearch free online courses from prestigious higher education institutions around the globe. Contains over 5,000 courses in 15 languages
World Lecture Hall University of Texas collection of free online course materials from around the world
Some specific course collections
a far from comprehensive and completely subjective list of a few open courseware sites
Khan Academycovers K-12 math, science topics such as biology, chemistry, and physics, as well as finance and history. Each video is a digestible chunk, approximately 10 minutes long, and especially purposed for viewing on the computer
MIT Open Coursewarea web-based publication of virtually all MIT course content
