Almost there. I loved the free arrange of groups on the prior version; but I understand it is coming in the future. Best Tab grouping out there, bar none. Easy to see icons, great graphical interface, easy to export. In fact, the reason I delayed updating to the latest Firefox was because Tab Groups was not in place. Now it is.

It doesn't switch between the tabs but instead closes and reopens the tabs. Every tab on the group is reloaded. You can use https://addons.mozilla.org/firefox/addon/experimental-simple-tab-groups/ from the same developer for proper tab hide/show but its experimental.

Добрый день! Все хорошо, только есть один момент. Если в группе много открытых страниц-то хочется их закрепить. А если закрепляешь-то при открытии новой группы закрепленные страницы открываются и в новой группе. Если бы это можно было бы исправит-было бы здорово

It's fast and almost never crashes at least in my case, which makes it even less time-consuming than the old add-on. One thing I don't like about it is that it messes the order of the tabs when switching from one group to another. Hope the developers will fix this issue in upcoming updates. Then I guess it'll deserve a 5-star rating.

Great addon, makes me forget old native tab groups. Improving a lot

It is a first that is nearest Tab Groups.
Make it better tabs overview (managing groups) and you have 5 stars and recommendations from me!
https://addons.mozilla.org/cs/firefox/addon/tab-groups-panorama

Good Addon. Not sure if the means of always closing tabs when switching groups is a generall problem with firefox 54+. Ofc it would be nice if they could stay opened. Let's see how it goes in time.
One other bug is, when I close the browser and reopen it: the tabs from my session reopen without a problem (they are not lost) BUT they are in no group anymore. Would be nice if the addon recognizes this was the old group and uses it. Workaround (and general nice feature) would be: when you right click tabs you can move them to group, so having a second option, when clicking on a tab to "Move all open tabs to group ..." would help a lot :) so I at least dont have to click on every single Tab of a window. Good work so far!

Poor compared to Tab Groups but better than anything available yet in Quantum disaster and makes it barely usable.

Almost as good as the old Panorama feature.

Some rough edges, but it's getting there.

Very good! Some features still missing, but hopefully they will be soon added:
- resize groups in the global view (manage groups)
- allow user to choose to open the "Manage" view when clicking on the icon (as it was the case with former "Group Tabs" extension for FF<57)
- do not close tabs when change group (it seems, according to what I've read so far, that this is a limitation due to Firefox... yeah, this is improvement... but no problem, proprietary 3rd party tools like Pocket are embedded...)

Regex filters are VERY appreciated! Keep your groups clean and make sure your github tabs are always with their scrutinizer-ci friend :)

EDIT (2019-01-16) : I've FINALLY updated Firefox (had to update Fedora 26 -> 29) and I must say that it's very nice when using this (not so) new hidden tabs API. Thanks a lot for the great job !
However, I'm still waiting for free arrangement (hopefully with group resize in the "Manage" view) and the possibility to directly open the "Manage" view when clicking on the icon => then, I'll give the fifth star!

Almost nice replacement for old tab groups addon. But with numerous bugs and lesser functionality.

При открытии браузера забывает в какой группе я нахожусь, в итоге получается иногда что вообще без группы и мои вкладки не сохраняются. Сильно раздражает что при переключении группы вкладки все время загружаются заново, несмотря на то что ранее в этой сессии они уже были загружены. В остальном норм, Спасибо!

Wonderful add-on!
- It would be awesome if you could add a auto-back option to the add-on, with time and idleness options.
- Also i recently ekspirenced a bug, where the tab group i was inn got "de-registered" so that the "group" i was inn had no color. And i got the a warning message, that if i switched to another group, all the taps in my current session/de-registered group would be lost.
It seems that it got duplicated, because all the tabs in the de-registered group where present in a registered group.

Working as described so far, thanks for this. FYI, breaking news that experimental version of tabHide api just landed in FF59 beta: https://blog.mozilla.org/addons/2018/01/26/extensions-firefox-59/ Hope you can get the extension working with it.

for translating it to Farsi just send me an email

It is good does one wants.

Much better with the editable short-cuts10 points!

I also notice groups of tabs building up if I pull windows out from the original window.

this addon is getting there keep up the great work.

Almost perfect, thanks!

Great Add-on
So far its good as the old Tab Groups

But there are two things that i dont like it, can you tell me how to fix it?
1: When i drag and drop tabs from group A to group B, the tab i need to transfer at the bottom of group A ( around 150 tabs in group A ). So after i dragged and dropped the tab, the scroll automatic go to the start of the list, so i have to scroll down again and again to move other tabs.

2: Auto rename and auto reload tabs when switch groups, i have lots of tabs so after switch groups my pc kind of lagging.

Hope you can tell me a good solution for those 2 problems i have

Great "Manage groups" This is what we need. Thank you for updating quick and powerful.

Like other I am switching over from Quicksaver's Tab Groups, so there will be plenty of comparisons to it.

The Good...
Pretty much everything UI related is better compared to Tab Groups. I like being able to set an image or colour to group. The menus and such also seem much more responsive.

The Ok...
I like that there are keyboard shortcuts but I would really like to be able to change the keybinding back to "ctrl + `" and "ctrl + shift + `"

The Bad...
Migrating from Quicksaver's Tab Groups to Simple Tab Groups was a bit rough. First I made sure to "back up" my tab groups by bookmarking them in folder named after their group. Then I installed Simple Tab Groups and disabled Tab Groups. After restarting only a few of my tabs showed up in a group even though the group had a tab count 563. So I restarted Firefox again. This time all my tabs showed up but I now had two groups with each with a copy of all my tabs. Repeating opening and closing Firefox continued the duplication of the group even after I started moving tabs into groups. To fix this I had to close all open tabs and restart. After that everything started working fine.
EDIT: Forgot to mention that this addon doesn't really like the about:* pages. Opening, for example about:config, does not bind it to a specific group instead it acts more like a pinned tab. In addition about:newtab does not load correctly when coming back to it (search bar, top sites, etc. don't show up)

The Ugly...
I know nothing can be done about it at this time but I still have to complain about it. I hate how this addon switches between groups. Essentially all the "current" tabs are closed and then new tabs are opened with the URLs from the other group.

TLDR
Good addon, but has some areas that need improvement

Disclaimer:
I only run nightly builds of Firefox, so there is a chance the issues I saw were caused by some change/defect in Firefox.

It isn't really super bad. If you ignore the fact that it adds random groups, duplicates tabs into other groups, deletes tab groups, has basically no instructions, forgets/deletes all tab groups and all that. As I said, if you ignore all that, it's alright.

EDIT: It has since been fixed, quite quickly to.