Creative Commons is a public charity dedicated to reducing barriers to the free exchange of knowledge and culture by making it easy and efficient to obtain legal permission to reuse creative, scientific, and educational works. Taking inspiration from the open source movement, CC has developed Web applications that help people license their original works for specified uses while retaining their copyrights. CC licenses have been adopted by such diverse organizations as the BBC, MIT, and the Public Library of Science. Over 60 million documents on the Internet are offered under CC licenses. CC was established in 2001 with the assistance of Berkman Center fellows and clinical students.