Indispensable. BUT I have noticed a behavior lately that I find quite annoying: when I hover my mouse over the left side of the tabs, all of the tabs shift right by several pixels. Then when I move my mouse away, they jump back to their regular position. So every time I move my mouse around in that area, the tabs are jumping back and forth - it's really irritating and distracting. It breaks my focus and I hope the developers will stop it from doing that.

So usefull. Add this extension to other browsers (Chrome, Edge, Opera)

Nice, Thank you. I liked Tab Groups - this restores that lost functionality.

I can't send the tabs thru the Tree Style Tab on the left regardless if it's per tabs or per tree. When I select the tabs, I need to send the tabs through the tab menu at the top (ergo by right clicking the tabs at the top not the tabs on the tree style). Please fix. Despite this, it's an amazing plug-in.

Standard Tree Style Tab funktioniert nicht, die anderen Funktionen jedoch schon. (FF 104.0.1)

I love Tree Style Tab! Amazing add-on! I don't get it why the other browsers don't copy this feature.