What unique features does Firebug have that are not built-in to Firefox?

Question

I just cleaned my Firefox addons and wondered:

• Which features does Firebug have that make it unique?

• Which features are available in both Fire

Answer 1

Seems like someone over there saw my question here ;)

https://hacks.mozilla.org/2013/10/firefox-developer-tools-and-firebug/

Problem is, that also doesn't answer very much. But it implies, that Firebug right now doesn't have much to differentiate itself and so is looking for way to change that.