Installing this was an immediate disaster for me. When I tried to save a list of tabs from one window, instead OneTab immediately closed the window, saving nothing, and I lost all the tab locations. It also inserted its own pinned tabs into a few windows that I hadn't even opened, and screwed up a couple of other things. Removed.

Found it very difficult to remove. Tab to control it remains even after removing it in the usual way.

NO funciona, se queda en espera, NO LO RECOMIENDO

A very insecure add-on, it has made disappear the tabs of the last four months, like that! After a normal update of the operating system. Lots of time wasted. This add-on should have something for backing up the tabs. I mean a button, not a f*** ordeal.
And the OneTab support team doesn't even show signs of life. Although why should they? After taking advantage of this rubbish they'll be on to another one by now. Another recommended!! Congratulations Firefox! Farewell Firefox! Wooow!!!

Lost almost all my tabs when firefox crashed restoring it after i accidentally shelved all my tabs trying to figure out how the addon works.

The onetab icon is still showing up even though I removed the extension.

Very annoying addon -_-.

Why does it suddenly open tabs in a new window?

Why can't I right click on the tab in the bar above -> add current tab just like I did it a few days ago? I right click no menu is shown. Well I'll go edit my saved list and try to add current tab.. oh wait the addon doesn't have that option -_-.

I'm deleting this useless thing and will use an addon that actually CARE about it's users.

Ah, OK... J'active OneTab et en ressors SANS action. Disparition de mes 50 onglets avec impossibilité de les récupérer et sans avertissement de ce qui risque de survenir.

Et puis ne dites pas que l'extension est disponible en français si seuls les titres sont traduits. Même pas le texte de "A propos de cette extension".

Aucune étoile aurait été préférable. Je désinstalle illico.

So Google learns all sites I connect to, despite blocking trackers? Big NO THANKS to this shady extension. And shame on Mozilla for recommending it.

Does not even show all currently opened tabs/windows in a list.

Do not restore the tabs when disabled

My precious tabs are ruined by this hateful and horrible extension. DO NOT try to install it, STAY AWAY from it as soon as possible! ! ! -- Advice from Tears.

This f*cking thing. DO NOT DOWNLOAD. I kept it for 15 minutes before realising I didn't need it. When I uninstalled it. IT CLOSED *ALL* OF MY TABS. 400 Tabs. Absolutely horrible extension. Steer clear!

Unfortunately it broke somehow in the latest firefox. Does not display the tab page anymore on startup and right clicking the extension symbol does not bring up the extension controls anymore. Please fix this extension asap. It's a really great extension.

my tabs are convert to one page with a form of list but it can not return its original shape.

I installed this, but I can't figure out how to get rid of it. Piece of crap.

Нельзя отправлять по одной вкладке в хранилище

I cannot express my feelings when tabs that have been there for months, are gone after trying the restore all function of this addon. It failed to restore all the tabs and now they are gone. Several of those tabs where markers to particular links that needed to be checked periodically or something similar, now all except 15, the oldest 15 at that, remain.

No longer working properly, used tons of CPU and memory while it's tab was open.