EdX, the not-for-profit online learning enterprise founded by Harvard University and the Massachusetts Institute of Technology (MIT), today released its XBlock SDK to the general public under the Affero GPL open source license.  XBlock is the underlying architecture supporting the rich, interactive course content found in edX courses.  With XBlock, educational institutions are able to go far beyond simple text and videos to deliver interactive learning built specifically for the Internet environment.  The release of the XBlock source code marks the first step toward edX's vision of creating an open online learning platform that mirrors the collaborative philosophy of MOOCs themselves and is an invitation to the global community of developers to work with edX to deliver the world's best and most accessible online learning experience.

Via Kim Flintoff, Bruno De Lièvre