Mine’s is the nightly version
LibreWolf
The one that always ships late with my distro (Fedora) is my favorite, I guess, since it is the one I use :)
it’s like the saying: if it don’t brake, don’t fix it
Firefox Focus on mobile with javascript disabled by default for news sites
deleted by creator
For Firefox mobile, it was the Fennec engine where you could easily install any extension… It became a pain with the Fenix engine… I hate this addon collection thingy, it’s a pain to setup
Beta and Nightly still allow that. Actually it’s a shame it still is not possible in any way to install any Add-on you want on the “regular” Firefox.
Firefox containers
The gecko demo that fit on 1 3.5" floppy disk.
Nightly
Android. It has the extensions I need and is plenty fast as well.
Iceraven on Android; it’s got extensions I use – notably SingleFile — that the main Firefox doesn’t have any more.
Old firefox XUL? When Add-ons isn’t restricted… Well old times… When search toolbar Spyware are everywhere… 😂