注意点として
・グループはウィンドウやタブとは別の枠組み(隠しタブを使ってる)として扱われる。
・新しいグループはそれを作成したときに操作してたウィンドウに隠しタブとして追加される。
・グループを扱ってたウィンドウを閉じてもグループは削除されない

複数のウィンドウを開く自分には結構とっつきにくい仕様、ウィンドウ単位でグループ扱えたらわかりやすかったかな……

隠しタブでなく別のウィンドウとして扱いたい場合は
1.「グループの管理」または「ストアのスクリーンショット4枚目」みたいに右クリック
2.「グループを新しいウィンドウで開く」
これで新しくて作ったグループを別のウィンドウで開けた

これとは別の話だけどグループ設定から「このグループにタブが自動的に移動した場合そのタブを表示する」を有効にすると移動したウィンドウがアクティブになって使いやすい

I made a profile on the Firefox add-on store just to write this review.

WARNING:
As of January 13th 2025, this add-on is broken. (Firefox version 134) After you restart Firefox, all of your open tabs will be gone, with seemingly no way to restore them. Until this issue is fixed, I recommend staying away.


As for the add-on itself:
It's alright, but I don't like that the groups are in a separate window, unlike for example Chrome's tab groups; the extra 5 seconds to access grouped tabs make it just a bit too annoying to use. It's somewhat usable for what it's supposed to do - or at least it would be, if it wasn't horribly broken...

Unfortunately must concur with the other recent 1-star review. This extension doesn't appear to do anything useful in FF 134. It adds the menu for picking colors, but it doesn't color the tabs in any way.

Diese Addon verspricht vieles aber hält nichts, man kann damit seine Tab super sortieren und als backup speichern, doch wenn man seinen Firefox wieder startet, sind dieses Tabs einfach weg und nach einem langen Suchen findet man sie im deaktierte Tabs. Dann muss man mühelos diese Tabs wieder im Firefox intragen. Die App Sideberry verspricht auch viel lässt aber alle Tabs offen, mal sehen was nun besser ist.

It never ceases to amaze me how developers will put so much work into a tool, and then make it completely unintuitive and impossible to use for the most simple and obvious use case.

とても使いやすい
日本語にも対応しています

Simply Rubbish would be a better title. Utterly confusing, duplicates tabs at will, adds tabs to groups that I haven't selected. Haven't found 1 part of this that actually works properly. Zero stars would be more appropriate. A user guide would be extremely helpful! We aren't all computer nuts and have the time to mess with this. We need to get on and work....

IT DELETED ALL MY WORK!!! It's not easy to handle at ALL. For some reason, as soon as I downloaded it, the extension deleted my pdf full of work that was NOT SAVED, and that's was due in two days. If you wanna group your tabs just go to Chrome because this is NOT WORTH IT!

the best tool to group tabs

Good extension but would be better to have wider space for displaying group names

how hard can it be to make a chrome style tab group extensions, i dont want to switch between groups i just want to organize the tabs in the tab bar

Very nearly what I'm looking for... the only thing I really want is to have tab groups visible in the sidebar in an accordion style rather than groups that you need to "move into". I would like to be able to see all tabs across multiple (or all) groups in the sidebar at once - I don't mind how exactly this is implemented behind the scenes, it could still use group context switching and such when I click between tabs in different groups. But being able to open and see tabs from multiple groups at once would provide feature parity with tab grouping in other browsers (not to mention all the extra features this addon provides on top of that), especially now that we can use the sidebar effectively as a replacement for the default Firefox tab list.

Really great. I got comfortable with it and had hundreds of tabs saved in different groups (I like how when you open the browser it has the tabs saved but only loads the tabs you actually go to in that session to save CPU usage and memory, and you can close Firefox and reopen it if you have too many loaded in memory). When some error caused it to lose all the tabs, I simply restored the backup because of the extension's nifty automatic backup. The only problem is there is no way to allow it access to files on my device, so if I'm viewing pdfs in a different tab group, and then go to that group, I can't see the pdfs again unless I manually copy the file path into the address bar to load them again, which gets tedious if I'm viewing several pdfs in various tabs for school. They should add the ability to grant that permission so that it will smoothly reopen pdfs just like it smoothly reopens websites. Fix that and 5 stars!

I have used this add-on for years and love it! Recently (I think since Firefox update 132.0.1) all the tabs keep deleting whenever the last tab of a group is closed. I hope this gets fixed, but for now there is a temporary workaround:
In about:config you can set `browser.tabs.closeWindowWithLastTab` to `false`. (There is a better explanation on the github-issues page, under issue #1229 but I can't paste URLs here.)

Rubbish addon. I closed the last tab in a group and it deleted *All* tabs in *All* groups. It will take me hours to reconstruct the tabs if I even can as a lot will not be in my History and it's not compatible with tab backup extensions!. DO NOT USE, would give this 0 stars if possible

I can not express how useful this add-on has been to me. It is phenomenal to be able to group tabs according to what I'm working on and to swap between groups as needed. It's great for pausing a project and returning to it later.

So very, very good. I keep wanting to recommend it to friends who have 100 tabs open, but most are running chrome and it doesn't seem to have a similar add-on. Their loss!

Thank you Drive 4ik

Just what I was looking for :)