The OpenCourseWare (OCW) initiative in the United States was started by the Massachusetts Institute of Technology in 2002. OCW is focused on making an institution's educational course materials created by faculty available outside of the institution. Materials can include syllabi, written lectures, assignments, readings, videotaped lectures, and audio lectures.
Open Courses are complete online courses (often called MOOCs, or Massive Open Online Courses) which are freely available to access and take. They include readings, assignments, and quizzes just like a traditional class. In many cases, certificates are awarded upon successful completion of the course, and in some cases are accepted for continuing education credit.