What Is Open edX? The Complete Guide for 2025
Open edX is the open-source learning management system (LMS) that powers edX.org — the online education platform founded by MIT and Harvard. Today it runs over 10,000 learning platforms worldwide, from Fortune 500 corporate training portals to national government education initiatives.
History
In 2012, MIT and Harvard jointly launched edX.org. The technology was open-sourced in June 2013 under the name Open edX. Each release is named alphabetically — the current stable release is Sumac (2025), running on Tutor v21.
Architecture
Open edX is built on Python/Django with React micro-frontends (MFEs). It uses MySQL for user data, MongoDB for course content, Redis for caching, and Elasticsearch for search.
Key Features
- Studio course authoring with XBlock system
- Video lectures, quizzes, peer assessment, discussion forums
- Custom-branded certificates
- SCORM 1.2 and 2004 via openedx-scorm-xblock plugin
- WCAG 2.1 Level AA accessibility
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