Developer Guide

1. Documentation topics
2. Tools

Whether you're an old hand or just getting started, articles you can find starting from this page will help you while you're working on Mozilla development.

Documentation topics

Working with Mozilla Source Code: A code overview, how to get the code, and the coding style guide.
Build Instructions: How to build Firefox, Thunderbird, SeaMonkey, or other Mozilla applications.
Automated Testing: How to run Mozilla's automated tests, and how to write new tests.
Getting your patch into the tree: After getting your patch written, you need to get it checked into the tree. This article explains the review process and how to get your patch approved.
Mozilla modules and module ownership: This article provides information about Mozilla's modules, what the role of a module owner is, and how module owners are selected.
Hacking the Firefox User Interface: How to get involved in developing the Firefox user interface and front-end software.
Code snippets: Useful code samples for a wide variety of things you might need to figure out how to do.
Mozilla development strategies: Tips for how to make the most of your time working on the Mozilla project.
Debugging: Find helpful tips and guides for debugging Mozilla code.
The Mozilla platform: Information about the workings of the Mozilla platform.

Tools

Bugzilla: The Bugzilla database used to track issues for Mozilla projects.
MXR: Browse and search the Mozilla source code repository on the Web.
Bonsai: The Bonsai tool lets you find out who changed what file in the repository, and when they did it.
Mercurial: The distributed version-control system used to manage Mozilla's source code.
Tinderbox: Tinderbox shows the status of the tree (whether or not it currently builds successfully). Check this before checking in and out, to be sure you're working with a working tree.
Crash tracking: Information about the Socorro and Talkback crash reporting systems.
Performance tracking: See performance information for Mozilla projects.
Developer forums: A topic-specific list of discussion forums where you can talk about Mozilla development issues.