bugzilla.mozilla.org (often abbreviated b.m.o) is Mozilla.org's bug-tracking system, a database for recording bugs and enhancement requests for Firefox, Thunderbird, SeaMonkey, Camino, and other mozilla.org projects.

Documentation about B.m.o.

What to do and what not to do in Bugzilla
Tips for how to use Bugzilla, as well as things you should avoid.
Bugzilla etiquette
A guide to etiquette; this guide will help you understand how best to conduct yourself on b.m.o. and how using proper manners and civility will help ensure your problem gets solved sooner rather than later.
How to tell if a bug has already been reported
It's useful (but not mandatory) for you to check if the problem you're reporting has been already tracked. This guide will help you do so.

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Other materials


  • Bugzilla Todos lists review and flag requests, patches to check in, unfulfilled requests you made of other people, and assigned bugs.
  • Bz Kanban is a board to visualize the status of bugs within a milestone.