Open Source for All Knowledge

Discover, contribute and help us build a more open future with free software and collaboration.

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Our Open Source Mission

Open Source Code

At Wikimedia, we believe free and open-source software is essential to achieving our mission of free knowledge for all. Our code base is fully available for inspection, contribution, and adaptation.

All code licensed under GPL v3+

Code hosted on GitHub

200+ active contributors

Featured Open-Source Projects

MediaWiki

The open-source wiki engine at the heart of Wikimedia platforms.

Core Extensions

Modular extensions for enhanced functionality and personalization.

Developer Tools

Libraries and APIs to help integrate Wikimedia content into applications.

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Contribution Steps

  1. 1 Browse our GitHub repositories
  2. 2 Fork the repository and make changes
  3. 3 Submit pull request through our contribution portal
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