Great when it works. The recent July 2024 update eliminated all my saved tabs. No response to 2 service requests. Trying something new.

Pros
- Saves tabs in large amounts
- Good amount of customization for the addons
Cons
- Will delete your entire tab list without warning or reason
- Lack of transparency makes it hard to recover tabs without exporting regularly

UPDATE 2: I found it - when you run out of disk space, OneTab freezes, becomes completely unresponsive, doesn't save new links and doesn't open already saved ones. And most importantly: AFTER FIREFOX RESTART, IT DELETES ALL SAVED LINKS !!!

UPDATE: Today it deleted all OneTab data again when I had not enough free disk space. (I learned my lesson first time, I always back it up). It's not robust. Beware of that.

It works well. But I already have lost all my data (about a thousand links) in OneTab once.

Onetab is NOT a backup tool !!

Fortunately, it has a great import/export function that is very easy to create backups. So use it! Don't make same mistake as I did.

ツールバーにOneTab表示
↓
誤クリックで全部のタブが閉じられてしまう
ウインドウそのものも閉じられてしまう
（指示していない）
↓
動画、ゲーム、オンライン制作編集、PDF、…
視聴や作業は初期化される
↓
さよなら絶望
これを回避するためには１ページごと右クリックしてOneTabへ送る必要があり、労作性が高い。

Display OneTab on toolbar
↓
Accidental click closes all tabs
The window itself is also closed.
(even though I did not give you instructions)
↓
videos, games, online production editing, PDF,...
Viewing and work will be initialized.
↓
Goodbye despair
To avoid this, it is necessary to right-click each page and send it to OneTab, which is high labor-intensive.

Mobile version review: I was pleased to find that there was a mobile version of OneTab, and it has many of the same functions, but a major downside in my usecase is that I can't practically add more than 10-15 tabs into OneTab at a time. I have to swipe through my tabs to load them, which will present them as able for OneTab to see and save. If I'm... not careful, or not quick enough, or TOO quick(?????), a tab will unload and I will have to go back and reopen it to make it able to be OneTab'ed.

This mobile version would be massively improved by the ability to just save all tabs all at once. I feel like the fact it's not here may mean there's something about Firefox mobile that keeps it from having that function, but if that's not the case, please add "send all tabs to OneTab".

Even though this is one of the most useful add-ons (when you use it intentionally), it has caused me problems. If you click the icon once, even by mistake, it sends all your tabs into OneTab automatically. Then, if you try to reopen them, it opens and *loads* every single one of them in succession, causing a tremendous memory leech. AND - it loads them in reverse order! Now my last opened tabs are way left, at the other end of the row and I have to scroll back to reach them! Absolutely inconvenient and frustrating.

When it works, I love it, but it often disappears and I can't find it again.

ENG / HUN: Be very careful with this: it archives everything in one click and without warning (!) - which means that if you use it a lot (for which Firefox is about the best browser), it simply takes an extremely long time to save!!! The reset takes approx. it's impossible because it starts filling up the tabs - with a huge memory requirement! I didn't have time to wait (any process), but luckily I saved everything before that with FoxyTab. That's what I recommend! I recommend that you 1. ask about it 2. write down the number of ears 3. give some calculation so that approx. how long does the process take 4. do not fill the tabs!!!
HUN: Nagyon óvatosan ezzel: egy kattintás és figyelmeztetés nélkül (!) mindent fület archivál - amitől ha sokat használsz (amiben ugye kb. a legjobb böngésző a Firefox) egyszerűen extrém sok ideig tart a mentés!!! A visszaállítás kb. lehetetlen mert elkezdi a füleket visszatölteni - óriási memóriaigénnyel! Nekem nem volt időm kivárni (semelyik folyamatot), de szerencsére mindent mentettem előtte a FoxyTab-al. Így inkább az ajánlom! Javaslom hogy 1. kérdezzen rá 2. írja ki a fülek számát 3. valami kalkulációt adjon hogy kb. mennyi ideig tart a folyamat 4. ne töltse be a füleket!!!

Have been using OneTab for years. Great extension, would love to rate it more highly, unfortunately there's too many usability issues. 1) I've just imported saved urls and because no feedback is given, I ended up importing the same URLs several times, and losing the latest open pages. No way to undo that, the "reject duplicates" is not active by default, and does not work retroactively.
2) I've submitted a request a long time ago, to select a group of tabs easily, and restore them all - not necessarily the whole group. Bulk delete should also be an option. Unfortunately, available options are very limited, and the extension has remained unchanged for a long time. Still grateful to the dev for creating something that should be native to any browser, but it really needs more work for me to give it more than 3 stars.

I am giving a 3 out of 5 (Down the Middle) The extension is amazingly fast to compile all the tabs into one tab but is excruciatingly painfully slow to restore tabs. Can this be fixed. Other extensions such as Tab Stash makes One Tab restore speed look like molasses in deep space. Hopefully there is a fix for this as I like the bigger layout in the OneTab screen. Thanks for your efforts though.

ich habe begeistert OneTab benutzt. Bis mein Firefox abgestürzt ist. Jetzt ist OneTab und alles, was ich darin gesammelt hatte, weg. Wie bekomme ich das alles wieder zurück??

I love it! It's simple to use, quick to understand, and makes moving between computer easy.
However, it's been like a week since it suddenly stopped working properly. It still saves all my current tabs when I press the button but the contextual menu doesn't work anymore. I have tried everything (even uninstalling and installing again) and nothing... Please, help!

É uma boa extensão, deve ser útil pra muita gente. Mas tenho poréns. Primeiro, o Mozilla tem a opção de "contêiner", poder usar contas diferentes em cada aba, e ao apertar no botão do "One Tab", as abas do contêiner são fechadas, restaurando só uma aba, então tenho que abri-las novamente, fazendo eu perder tudo o que já estava definido nas abas contêiner. Segundo, seria bom ter como minimizar as abas que são selecionadas manualmente, pra deixar de lado somente as abas que não usarei no momento.

I thought it was great until it disappeared, along with all of the tabs I had saved there, after my last Firefox update. No instructions as to how to get the tabs back -- it should be as easy as clicking a Restore button somewhere. And now I can't get it to work at all, though I no longer trust it going forward to keep all my info safe.

- It would perfect if they work with "Sidebery"-Adon
- "Miss reload page button" on OneTab Page if it is in laodmod for a fast relaoding.

after start firefox - button "onetab" in panel - show, but not worked. If disable and enable again onetab addon in firefox settings - botton begin work. After restart PC and start firefox - onetab button again non work.

nice onetap commits@roneroy

Excellent usability BUT frequently consumes ~95% of CPU, therefore I can't recommend this add-on

Хорошее расширение, даже думал поставить 4 звезды, но кроме отсутствия сохранения истории переходов (вперёд, назад) каждой вкладки (это минус первая звезда), обнаружилась другая проблема. В связи с тем, что OneTab автоматически НЕ делает резервные копии данных (отсутствует автосохранение), существует риск потери ссылок из-за ошибки самого расширения, которое периодически (хоть и очень редко) сбрасывает своё состояние в ноль. Это минус ещё звезда. Я уже не говорю про скудность экспорта данных (не хватает xml, json или подобного формата). В целом, расширение работает, но оно довольно ущербно.