[johnsonjo]

I haven't used Firefox in a bit, but I thought their devtools were pretty good, but last time I used it I used their developer edition browser [1]. I think the devtools were particularly bad when you used to have to install Firebug as a seperate part of the browser which is no longer the case [2]. For a quick view of what the developer tools currently look like you can see here [3]

[1]: https://www.mozilla.org/en-US/firefox/developer/

[2]: https://hacks.mozilla.org/2016/12/firebug-lives-on-in-firefo...

[3]: https://firefox-source-docs.mozilla.org/devtools-user/