This extension is EXCELLENT. Much better than the old Tree Style Tabs. Faster, more full of neat features. It's great. I never write reviews, but this one deserves it.

Amazingly intuitive and full-featured tab management. Wonderful integration with other Firefox features, like containers and bookmarks. Full tree structure with everything you'd expect plus unloading, saving sessions (as "snapshots"), and very rich customization support.

nice and simple

Excellent! It should be FF by default :-) Gives more space verticaly on your computer screen. One can see tab names regardless of number of tabs which makes reviewing and switching between tabs quicker and easier.

Just what i was looking for!

Thanks, it is lovely (and most practical of course) !! ;)

best

Поставил после того как услышал от @bobuk в подкасте Radio-T, классное расширение, именно то что мне нужно, особенно радует иерархия