"Open edX is the open-source educational platform developed by edX and its open source partners, including leading institutions. It powers the edX.org destination site and research initiatives and will power mooc.org."
A Massive open online course (MOOC) is a course where the participants are distributed and course materials also are dispersed across the web. This is possible only if the course is open, and works significantly better if the course is large. The course is not a gathering, but rather a way of connecting distributed instructors and learners across a common topic or field of discourse.[1] MOOCs are a more recent form of online course development --
"Class Central is a free online course aka MOOC aggregator from top universities like Stanford, MIT, Harvard, etc. offered via Coursera, Udacity, edX, Canvas Network, & others"
"Minerva combines the best of a liberal arts and sciences education with cutting-edge technology and the latest research on how people learn for improved student outcomes. This unparalleled academic experience is designed to prepare students to be future leaders and innovators across all disciplines."