Not compatible with 56.0 Rated 5 out of 5 stars

I would love to try this add-on, but Firefox 56.0 refuses to install it.
Why does this add-on require version 57?

the sole reason why I still use Firefox Rated 5 out of 5 stars

this plugin should be default in all browsers. Unfortunately it doesn't work well with last versions of Firefox :/ it's slow and doesn't look as good as before. But because it's been awesome until now it still deserves 5 stars. I just wish Firefox would put more effort to support this first class plugin.

This review is for a previous version of the add-on (2.0.5). 

The most important add-on for Firefox Rated 5 out of 5 stars

If I can't use it in FF57, I will switch to Vivaldi. Have used FF since Phoenix 0.6 so this would be traumatic.

This review is for a previous version of the add-on (2.0.5).  This user has 2 previous reviews of this add-on.

Literally the only reason I use firefox. Rated 5 out of 5 stars

If chrome had this, I would be using that browser. I can't find any way to donate to you, do you have a donation page somewhere?

This review is for a previous version of the add-on (2.0.5). 

Good but I wished it had better and visible shortcuts for closing a tree Rated 5 out of 5 stars

Very nice add-on. Once you're used to it, you do not want to go back.

This review is for a previous version of the add-on (2.0.4). 

Это топ 1 дополнение Rated 5 out of 5 stars

Ну наконец-то, свершилось! Не глючное и быстрое дополнение древовидных вкладок, качественное визуальное оформление. Автор божественнен!

This review is for a previous version of the add-on (2.0.4). 

Absolutely essential! Rated 5 out of 5 stars

Tree style tabs is an absolutely essential browser add on for me. I can't thank the author Piro enough for all the YEARS of keeping this up to date and now that he's even supporting Firefox 57 I'm just amazed. This feature should be a part of Firefox's core experience. It's the biggest differentiator between FF and Chrome and it's why I will open often upwards of 200 tabs (I'm not exaggerating) without issue and keep those trees of tabs open for weeks as I work through certain issues and only close them when I'm ready to move on. In fact, Tree Style Tab removes the need for Bookmarks as it saves not only the page but the trail of history that led you there. I will often Google a topic and then control click the first 6 links then go through the tabs closing the links that aren't helpful. It's a huge time saver and just works in a way that really clicks with me.

This review is for a previous version of the add-on (2.0.4).  This user has 2 previous reviews of this add-on.

Perfect! +1+1 feature requests Rated 5 out of 5 stars

Perfect add-on! Using it for years...
Also new webextension version is working fine (in FF57 beta)
Would be nice if one could disable showing standard tabs..but as on could read e.g. on https://news.ycombinator.com/item?id=15342379
new API doesn't allow it yet (workarrounds for this could be also found in link above).
Another point which would ad the "icing on the cake" would be a possibility to show number of open tabs in the addnewtab field below last tab. This would help to be reminded when it's time to close some...

This review is for a previous version of the add-on (2.0.4). 

FireFox differentiator Rated 5 out of 5 stars

I used to say that I would never move to Chrome because of Tree Style Tab.
I eventually did because some sites were becoming unbearably slow in FireFox. But I have always missed Tree Style Tab. And I would occasionally use FireFox for specific task so that I can use Tree Style Tab.
You've done a great work rewriting TST to support FireFox 57! Thank you! I'm back to FireFox now.

This review is for a previous version of the add-on (2.0.4).  This user has 2 previous reviews of this add-on.

Absolutely great!!! Rated 5 out of 5 stars

Dispite some some smaller issues an absolutely great add-on. It's really fantastic.

Issues I have seen so far (first installation only a few minutes ago):
- tabs can disappear after changing certain settings (re-appear after re-starting Firefox)
- scrollbar mostly left but sometimes right

But could be effects of my environment:
- openSuse LEAP 42.3 Linux
- Kernel 4.4.87-25-default
- KDE Plasma 5.8.7
- Firefox 52.4.0

Editable tabs like normal tabs would be great.
Marking n tabs - for example with Shift - to move under a tab as sub tabs would be great.

This review is for a previous version of the add-on (2.0.2). 

Ключевая функция ФФ Rated 5 out of 5 stars

Это ключевая функция, которой нет у других браузеров и судя по всему никогда и не будет, раньше на другие интерфейсы VR перейдем...

This review is for a previous version of the add-on (2.0.2). 

Good - Bon - 7lo :) Rated 5 out of 5 stars

Testing it from now on. So freaking great you developped a « Tree Style Tabs » web extension alternative. Thank you man :)

This review is for a previous version of the add-on (2.0.2). 

Tab hierarchy isn't saved between sessions Rated 3 out of 5 stars

Either crashes or intentional closures.

Awesome otherwise.

This review is for a previous version of the add-on (2.0.2). 

This add-on is the reason why I could never really switch to Chrome Rated 5 out of 5 stars

Someone already said it, but it's worth repeating. This is an essential add-on. Instant compatibility with Firefox 57 is greatly appreciated!

This review is for a previous version of the add-on (2.0.2). 

Great addon Rated 5 out of 5 stars

This makes Firefox so much better.
Must have if you have many tabs open. The ability to control the tabs is also really nice.
Hope it will be compatible with the latest version of Firefox.

Thanks a lot Piro!

This review is for a previous version of the add-on (2.0.2). 

Small problem Rated 5 out of 5 stars

Thanks for turning this into an extension!!
Small problem, even when "promote the first child as the new parent" is checked, closing a parent tab in the horizontal (default) tab bar still closes all child tabs when tree style tabs are working in background and toogled off (works well when tree style tab is toogle on). Hope you can fix this, coz sometimes it can be quite confusing.

Thank you for your work over the years !!

This review is for a previous version of the add-on (2.0.2). 

Is it possible to add search tab, please ? Rated 5 out of 5 stars

great extension!!

This review is for a previous version of the add-on (2.0.2). 

simply essential Rated 5 out of 5 stars

simply essential

This review is for a previous version of the add-on (2.0.2).  This user has a previous review of this add-on.

Is it possible to add CTRL+mouse wheel anywhere in Firefox windows to move tabs, please ? Rated 5 out of 5 stars

Great plug !

This review is for a previous version of the add-on (2.0.2).  This user has 2 previous reviews of this add-on.

Great extension, temporary issue with CPU utilization on MacOS Rated 3 out of 5 stars

Great extension!

I had gone over to Tab Tree from about 50 to 56 since it was lighter-weight (with at times 300+ tabs, TST slowed down the browser).

I've now switched to the 57 Beta, so I'm using TST again?
At first it worked really great, but now I'm getting 100+ CPU usage which disappears when I disable the extension.
Now to investigate...
(I'm on MacOS 10.12.6)

This review is for a previous version of the add-on (2.0.2).