Open edX is an open-source platform for online learning, with a learning management system (LMS) for learners and Studio, the environment in which course content is authored. The software is written in Python and JavaScript on Django, supplemented by separate React micro-frontends. Open edX grew out of edX, an initiative of MIT and Harvard, and was released as open source in 2013. You can run it yourself, for example with the Docker-based distribution Tutor, or have a service provider host it.
Since edX was sold to 2U in 2021, the project has been stewarded by Axim Collaborative, a nonprofit founded by Harvard and MIT (formerly the Center for Reimagining Learning). 2U acquired edX, but maintenance of Open edX moved to the nonprofit. The code is licensed under AGPL-3.0. Because the software is free and can be self-hosted, European organisations can keep learner data under their own control or with a European hosting partner. Where data is stored then depends on the hosting chosen.