You can obtain developer access to two important tools in one go:
- Wikimedia Code Review, the Gerrit instance for our Git repositories where all code contributions are reviewed. Code contributions to existing projects or to your own new project will go through this tool. See also How to contribute.
- Wikimedia Labs is a virtualization cluster aimed at helping volunteers get involved in Wikimedia operations and software development. Get your own instance to experiment and test your MediaWiki projects.