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The rest API for discussions was using custom HTML sanitisation code that
matched the behaviour of the client-side library. This replaces the custom
code with bleach for better security.


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Jul 9, 2013

This is the core repository of the Open edX software. It includes the LMS (student-facing, delivering courseware), and Studio (course authoring) components.


Installing and running an Open edX instance is not simple. We strongly recommend that you use a service provider to run the software for you. They have free trials that make it easy to get started:

If you will be modifying edx-platform code, the `Open edX Devstack`_ (Developer Stack) is a Docker-based development environment.

If you want to run your own Open edX server and have the technical skills to do so, Open edX Installation Options explains your options.


The code in this repository is licensed under version 3 of the AGPL unless otherwise noted. Please see the LICENSE file for details.

More about Open edX

See the Open edX site to learn more about the Open edX world. You can find information about hosting, extending, and contributing to Open edX software. In addition, the Open edX site provides product announcements, the Open edX blog, and other rich community resources.


Documentation can be found at

Getting Help

If you're having trouble, we have discussion forums at where you can connect with others in the community.

Our real-time conversations are on Slack. You can request a Slack invitation, then join our community Slack team.

For more information about these options, see the Getting Help page.

Issue Tracker

We use JIRA for our issue tracker, not GitHub issues. You can search previously reported issues. If you need to report a problem, please make a free account on our JIRA and create a new issue.

How to Contribute

Contributions are welcome! The first step is to submit a signed individual contributor agreement. See our CONTRIBUTING file for more information – it also contains guidelines for how to maintain high code quality, which will make your contribution more likely to be accepted.

Reporting Security Issues

Please do not report security issues in public. Please email