Contribute to Wikimedia open source

Help build the Wikimedia ecosystem with open source software.

Learn how contributing works ¶

Get the basics of how to contribute to MediaWiki and other Wikimedia open source projects.

Contribute by topic ¶

Find ways to contribute, and connect with others with shared interests.

Contribute by programming language ¶

Choose a project to contribute to based on programming language.

Search all projects ¶

Search all Wikimedia open source software projects.