Usage and retention metrics for Mozilla products. a.k.a GUD

See the activity, behavior, and hardware configuration of Firefox users.

View the measure distributions and evolutions over time. a.k.a TMO

Find what data is available & how to use it. a.k.a DTMO

Learn how to record data & what data gets sent.

Find what probes are submitted from Firefox.

Learn how to run add-on and pref-flip studies & experiments