Just Awesome. Can't do without it.

Override drag&drop Firefox functions.

It works much faster than Tree Style Tabs, nice.

An excellent extension, only the icons of some sites on the tabs are not displayed. And on the original tabs are displayed.

This is a great addon. I really like the way I can put tabs in groups and then subdivide them into folders, great idea - glad somebody thought of that, I sure didn't. Some things I would like to see would be the option of having trees expand automatically when selecting the parent tab, colors for the folders title/background and have undo close tab to place the tab back in the tree where it was when closed. Over all a great addon.

Finally! I have my old tree-style tabs back again after the Firefox upgrade debacle.

I was using "Tree Style Tab" and it worked really well, but I like to be able to recall my 100+ tabs from previous sessions. So started to use "Tab Session Manager". That just made everything go bad. The tab tree would be loaded in a complete and utter mess. Making it completely useless.

So, came across this add-on and never looked back. Can save a tab tree, go back to a previous session, export to a JSON file for munging in external scripts. Nice!

Happy to donate to the developer as its saving me bucket loads of time.

[Edit: To the developer - You're on to a winner here! Keep improving it, but remember why people wanted to use your add-on in the first place.]

Très pratique pour le trie des onglets

I've been using this only for a few days as a possible replacement for "Tree Style Tabs" (which loads slow). I like it and it reminds me of the the old Tab Tree extension with new abilities. I like the groups idea. But I guess I'm a bit confused as to why both groups and folders, since they perform the same function (from what I've seen), except one is vertical and the other horizontal.

I'm giving it three stars for two reasons (and would happily update if these issues were addressed):
1. Ctrl-W (close tab) not only closes the tab, but jumps you to the last group in the list. It should close the tab and not only remain in the same group, but go to the previous tab.
2. There is no way to contact the developer from the Options screen (only links to donate).

[UPDATE 1] Tabs load instantly, which is awesome. Ctrl-W *does* close a tab and return to the previous or next-up tab ((+1 star)). Groups are awesome, esp since I can keep an eye on the number of tabs! Tab unloading is great, but I wish the pinned tabs wouldn't unload. But the reload time isn't too painful. Still no way to contact author from the Options screen.

[UPDATE 2] Groups all of a sudden disappeared upon browser update and restart. Tabs are still there, but now they are all in the Ungrouped default group. Browser updated to 62.0.2.

Best tree-style tabs plugin! Very well crafted.

I made a whole bunch of groups, and I wanted to save them for later (they were all open at that time) so I right-clicked the group tab and selected "Hibernate". They disappeared (good), but how do I get them back?? I searched all the reviews, looked at all of the pictures, and NONE of them explain how to get back "Hibernated" groups -- or an explanation of what "Hibernate" even means! Looks like I lost a whole bunch of pages and scared to use this further. Help please!

EDIT: Thank you for the response @kroppy, problem solved! Would be nice to have this in the description so slow users like me will know what to do :D

5 stars because it does its job well and there is a lot of features available.
Minus 1 star because in terms of default (I say default because you can customize the theme) ergonomics, it could be better.

I was looking for the ability to sort my open tabs via a firefox add-on/extension. I found this. Sorting isn't listed as a feature, but Tree Tabs effectively allows this.
Two Steps: I search and put the matched tabs in a group.
This tool seems better than the ones that just offer sorting. Just started using it today.

You can add folders and tab groups, which makes this addon a solid solution for organizing your tabs. Improvement can be won on displaying children in the trees. It is not really clear which ones are child elements of a parent element in the tree. The distance is not big enough. Maybe the use of colours can be a solution for that.

Tab trees no longer break on startup, yay!

However I have the same issue as the last reviewer. After a while new tabs won't display in the tree until you disable then re-enable tree tabs(or firefox).

1.7.6 on latest official firefox release

There was a bug.
Version 1.7.6
1. When adding a new tab, the tab is added, but it is not displayed.
When restarted, it is added to the bottom of the group.
The occurrence condition is unknown.
There is no problem immediately after rebooting, but it will occur again after a while.
I am setting to add all tabs as child tabs.

2. When tab group was imported, the tab structure was broken.
Also, "Rearranging tabs and folders" does not end.
It was not possible to open it by clicking the tab, and when restarted the tab had disappeared.
After importing it back to v1.4, it worked.

!
Oh, there was such a place.
I will report it when I find a bug in the future.
Thank you for maintenance.

Tree Tabs is easy to use, simple, but really useful when you need to manage a lot of tabs.

You can organize tabs in a tree structure in the sidebar. Fold it or unfold it. Navigation of tabs has made simple.

Wow, this is VERY promising and I'm already using it full time. If the bugs get ironed out this could be one of the most popular extensions for firefox.

I've been using this for quite a few months, and the developer has added some very nice features during that time. Organisation of tabs is a breeze with this thing.

I can select tabs without loading them, put tabs into general organisational groups and trees under each other, close and move lots of tabs at once, and so on. The tabs are also displayed pretty compactly by default, and additional information (such as whether or not a tab is loaded) is well conveyed. A number of these features cannot be found in some of the more well known tree-like tab extensions, which is why I use this one.

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Would it be possible by an option to change this shortcut key ? *Ctrl+F2 to toggle Tree Tabs sidebar*
I would love to use Ctrl + Q, if possible, in a future upgrade consider for this option :)
Thank you very much, this extension is wonderful!