I love it!

STAY AWAY!!! This shit just deleted about 200 tabs for me by moving only 47 tabs to the OneTab window when using the send all tabs from all windows to OneTab feature, closing all tabs one by one and then closing the windows, so restoring the windows with Firefor built in feature only brings back ONE tab per window and not even all windows (3/10). As you can imagine i'm quite upset by this.

I absolutely LOVED this extension! That is until it LOST ALL of my tabs!! 😡 I would literally PAY for syncing capabilities.

It loses your tabs! Beware of this possiblity. It was last updated 2 years ago so may be incompatible with the latest firefox.

Used to be good. Now on occasion when click 'bring all tabs into onetab', all tabs are closed but are not brought into onetab - ie they are gone, gone, gone. An extension of this type has to be consistently reliable, else it's worse than useless. They don't seem to be updating it, so I guess it's dead.

I have been using this Add-on for years, I am a Tab monster and I am always letting them get out of control. One click condense, once there I will often times right click in the history to selectively reopen the tabs (in a new tab) thus saving my history in order of appearance.