OpenCourseWare (OCW) are course lessons created at universities and published for free via the Internet. OCW projects first appeared in the late 1990s, and after gaining traction in Europe and then the United States have become a worldwide means of delivering educational content.
The OpenCourseWare movement started in 1999 when the University of Tübingen in Germany published videos of lectures online for its timms initiative (Tübinger Internet Multimedia Server). The OCW movement only took off, however, with the launch of MIT OpenCourseWare at the Massachusetts Institute of Technology (MIT) and the Open Learning Initiative at Carnegie Mellon University in October 2002. The movement was soon reinforced by the launch of similar projects at Yale, Utah State University, the University of Michigan, and the University of California Berkeley.
MIT's reasoning behind OCW was to "enhance human learning worldwide by the availability of a web of knowledge". MIT also stated that it would allow students (including, but not limited to, its own) to become better prepared for classes so that they may be more engaged during a class. Since then, a number of universities have created OCW, some of which have been funded by the William and Flora Hewlett Foundation.
According to the website of the OCW Consortium, an OCW project:
Ten years after the US debut of OCW, in 2012 MIT and Harvard University announced the formation of edX, a massive open online course (MOOC) platform to offer online university-level courses in a wide range of disciplines to a worldwide audience at no charge. This new initiative was based on MIT's "MITx" project, announced in 2011, and extends the concepts of OCW by offering more structured formal courses to online students, including in some cases the possibility of earning academic credit or certificates based on supervised examinations. A major new feature of the edX platform is the ability for students to interact with each other and with teachers in online forums. In some cases, students will help evaluate each other's work, and may even participate in some of the teaching online.