A mandatory Add-on for me. Was better before Quantum update of firefox but with CSS edits you can get some functionality back.

I’ve come to rely on this so much that I don’t even know how people live without it.

Absolutely essential. The lack of anything like this on that other browser makes it impossible for me to consider switching, ever. (No, that tabs in a separate window thing is not near good enough.)

best onthe market, it make me cant migrate from ff to another browser...
edited
------------
(2) Close button on tab doesn't work with latest (3.4.1) version.

One of my favourites addon of all times. I keep a lot of tabs open for work and games (between 1000 and 2000), and this addon is a life saver. Helps a lot and let me save a lot of time in finding the tabs I need. Highly recommended.

sempre trazendo otimas opcoes

Initial difficulties with the sidebar scrollbar resolved thanks to irvinm

https://github.com/piroor/treestyletab/issues/2489#issuecomment-590028595

хороший браузер, Рекомендую!