EdX is a massive open online course provider that hosts university-level courses for free or low-cost for a worldwide student body. It was created in 2012 by MIT and Harvard and now has over 14 million students taking more than 1,800 courses from more than 70 schools and organizations. The website loads quickly, has readable fonts and formatting, and makes important information like course listings, search functions, and contact details easily accessible without distracting ads or popups.