It seems to do most of what I expected. One part I had hoped is that it would remember window placement (where are they on screen ... and which virtual desktop are they on). Unfortunately, it doesn't do either. For me, this just seems to be another way to do what "Restore Session" already does.

Does not work. File has the data inside it, yet this add on does nothing with it.

Powerful. Vastly superior to bookmarkiof ng, best way to conserving extensive web research.

Facebook und X starten oft nicht im aktuellen Fenster, sondern machen eigene Fenster auf. Wenn ich vergesse, diese Fenster zu schließen, bevor ich Firefox beende, kann es passieren, dass beim nächsten Firefox-Start alle meine Tabs weg sind und stattdessen Facebook oder X startet. In solchen Situationen hat mir Tab Session Manager schon oft die Tabs wiederhergestellt.

Very interesting extension, but there are shortcomings, especially in terms of optimizations after 1000+ saved sessions it starts to lag, freeze, etc., developers, do something about this, optimize the list of sessions so that when you open the menu, not all sessions are loaded at once, but in parts, or make a page mode instead of scrolling, otherwise it’s a complete disaster with the list of sessions!!!, and by the way, for some reason, the extension works better and faster on Chrome than in Mozilla, but there too, if you save a lot of sessions, it starts to freeze, but in Chrome there is also session-buddy, also good, I recommend it, it’s a pity there is no Tab Session Master analogue for Mozilla.

It would be a very great extension but unfortunately it cannot work together the Tree Style Tab. Yes I know it says it can but it's not true. It can restore the tabs with Tree Style Tab in 1 time of 10 attempts, in other cases I lose the Tree Style Tab settings, what is very annoying and I don't says polite words during that time when I have restore the trees manually. What is not a funny process with more hundreds tabs.

one of th most important addons for FF!
thank you.
BEST: sync with cloud.

The extension would be useful, unfortunately it has already happened to me a few times, that when restarting Firefox the tabs opened when closed are not restored. Unfortunately I lose many tabs that I can not recover and I do not like this, so I have to uninstall the extension.

One of my most used extensions. I wish it was available for Firefox on Android.

Ele funcionava bem há alguns anos, mas não salva mais as sessões automaticamente, seja por tempo, seja ao sair do Firefox, somente salva quando salvamos manualmente - e, mesmo assim, pode manter apenas a última.

Great!

Latest 7.x versions don't work - I lost all my data like many others. I have gone back to the last 6.x version but I am not happy about the loss of data.