The number 1 reason why I use Firefox!

Es macht, was ich erwartet habe: ich kann Bookmarks hierarchisch sortieren.
Man kann immer etwas verbessern, ich gebe trotzdem 5 Sterne, weil ich es toll finde, wenn jemand etwas kostenlos programmiert.

Makes tabbing much easier and more user-friendly. Works exactly as stated. : )

Alors j'ai sous la main, tous mes onglets sans continuer à les chercher. Fantastique !

It's massively hyped by that one tik-toker. The downsides with using this is that it makes your browsing space smaller. In addition, if you're an impulsive person and accidentally close one browser, then you can wave ALL those tabs gone because your never going to get them back. Also it's a massive hassle to group tabs like this, but the upside is that its easy to keep control of tons of tabs.

Very nice, except I would wish that one feature was added: Opening a whole tree in container tabs, or otherwise being able to collapse a tab tree in the tab bar on top.