[input_sh]

Special features: kind of like an IDE on top of Firefox, meant to be used by web developers. Comes with its own config profile, so you can fuck around and not break stuff in stable/beta that you are supposed to have concurrently installed.

Kind of like beta: all of the new APIs and features related to web development are there three months before they hit stable.

[shawnz]

The retail edition of Firefox already includes dev tools.

[input_sh]

...and Firefox Developer comes with dev tool features that have not yet reached Firefox Stable.

[ihuman]

Which ones are not in the stable version yet?