Very helpful with 100+ tabs across multiple windows as it opens a sidebar which is specific to each.

Put it together with Auto Tab Discard and boom!

This has changed my life. I am able to stay on top of tabs much better when I can see them this way. After Firefo Quantum came out, my preferred tree-style tabs add-on no longer worked, and I thought I was banished to an endless sea of horizontal tabs forever...thanks for your work on this!

Lovely extension. I expect to see more improvements in the future. Would be nice if it used ideas from https://chrome.google.com/webstore/detail/quick-tabs/jnjfeinjfmenlddahdjdmgpbokiacbbb?hl=en

An essential extension if you have about 200 tabs open, like me :-)
Thank you so much for your hard work!

The interface is easy to use, and the tree toggles off an on quickly. It's great when there are only a few tabs open. My problems with Tree Style Tab is that it slows down and already slow browser (Firefox Quantum). It takes time to load on opening the browser, and if there are more than four or five tabs, it seems to slow down the loading of the pages. This may be due to not being able to override the top tabs Firefox uses, so two sets of tabs are loading at once. Whatever causes the slowdown and freezing--Firefox or the add-on--there are times they simply don't work well together, so I turn off the tree.

you have the best wiki for tree tabs

I confirm previous commenters. TST doesn't work any more !

I've been using TST for about 6 weeks, and it's worked fairly well, but it's got at least two annoying problems.

First, when I open a link on a page and specify that it's to be put into a new tab, TST will occasionally create the new tab in some random location farther down the tab stack (but not as a child of the active tab). Trying to move that new tab back under the active tab is fruitless--it always jumps back to the random location.

Second, whenever I restart FF, TST doesn't retain the tree structure that existed before the restart. The first group is always as it should be, but beginning with the second group, all subsequent groups become child branches of the second group or some other subsequent group. It's a real mess, and it takes me a good 3-4 minutes to manually put things back the way they should be.

Hopefully, all this will go away in time. I should note that I'm running Tab Session Manager, though I don't think the problems started when I installed that (about 4 weeks ago).

tabhideにもいち早く対応し、グループのスイッチができる数少ない縦型タブアドオンだと思います。
せっかくtabhideに対応しているので、タブのコンテキストメニューに「Simple Tab Groups」のグループ移動のメニューが出てほしいと思いました。
上部のタブバーを隠すと他のアドオンのコンテキストメニューが開かないので、タブグループの移動ができないのです。

Great, must-have addon, and first reason to using FF for me.
- Tst toggle hotkey change option is needed. f1 by default, srsly?
- Tab context menu needs custiomization too:
-- missed some important options from tabs (Send to other device, etc);
-- ... but its overloaded with items that I would like to disable

Also some occasional errors: seens descend background tab sometimes opens in wrong tree; multiple tabs closing sometimes breaks on halfway

Awesome!

perfect!

Just amazingly useful!

Love the grouping feature and that I can close individual tabs with their own [x] button without having to first navigate to them.

Some ideas:
- Visually maybe it would be best to show each tab's [x] button on hover though
- Should be able to drag left to ungroup (unindent) one level and drag right to group under the previous (above) item
- Also, it would be really if a filter box was on the top to select which tabs to show (filter titles using typed substring). Indentations should be remembered (that is have invisible parents if those are filtered out). If hard to implement, it could at least highlight found items or gray out items not found. Could also have that as option and could have Previous/Next button to select next tab that matches the filter

BUG report: 3.9.21 broken, reverted to 3.9.19 and that fixed it.
When it works, it works. absolutely necessary.

Tab Tree was better. Too bad about ff>55

Been using this add-on for ages, keep up the amazing work!

I really love this extension because it makes organising my tabs so much easier and logical. One issue though is that when I restore tab after a crash, I lose all the trees. I have to manually make the trees again which can be pretty annoying. It would be fantastic if you could fix that

Makes your tabs more like a folder list. You can collapse individual branches of the tree and really see a whole lot of tab roots all at once. This is the way all tabs should be done in every browser!