Does not even appear on the toolbar or anywhere else - so no idea if it actually works or not. About to uninstall and find something else.

Did not save my fucking tabs.

Destroying my tab groups every launch. All Tab Groups need to be recreated, all tabs need to be readded to their groups. Disabled until this is supported.

Not restoring previous.jsonlz4

On two different ff versions 91.9.1 and 115.20 it randomly deleted ALL sessions, on one ff i lost a sessionwith 2000 tabs and on the other 1800 tabs, backup is disabled by default, no other backups are kept and recovery is possible only if you have all your history from the past 6 months. evrything else is pretty good.

used to work but recently after the notorious Firefox update it's now broken and author does not respond.

Where the hell are all my tabs!!!??
The settings have ALL my windows and tabs to automatically save and restore... I am missing more than half my windows and hundreds of tabs!!!

Jan-2025 This outfit used to have two extensions - a video downloader and this Tab Session Manager. The video downloader stopped working about a year ago and now the Tab Session Manager has stopped working too. For almost two years, I've allowed them to autodebit my Paypal - BUT NO MORE. When I wrote them about the video downloader not working I never got a response. Adios.
Win 7 Pro
Firefox 115.19.0esr (64-bit)
Dell Precision M6600 w/8GBy

DEAD!

dont work

The extension no longer stores any sessions. Its basic functionality is broken. The last update was almost 7 months ago. Has it been abandoned?

Hasn't been updated in almost 7 months and lots of outstanding bugs on their Github page. They just don't seem to care about this anymore. Look elsewhere.

I just want the pinned tabs to remain open even without restoring the session. This does nothing more than create a more bureaucratic history, just like restoring the session.

It's been broken for a few months now - and nothing actually works.

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

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.

Borderline useless. Autosave for sessions does absolutely nothing as I've had to painfully find out the hard way, which makes the whole point of this extension moot.

Still looking for a firefox equivalent of the chromium plugin "session buddy"... and this one here definitely isn't an option if the most basic features just don't work.

Literally the only plus point I've found was that it's able to save and restore private windows, which I use to log into multiple accounts for the same site (rather than constantly switching between them). Hardly worth it if everything else doesn't work properly though

when I save one session it removes the one I saved previously. exporting sessions stopped working because of some error with website name characters or something. useless. could be suspended tabs issue. doesn't get updated ever. bugs don't get fixed ever.
seriously remove this t from the browser. it's outdated and not being updated. crashes after few uses and you can't fix it there are no easy workarounds. why keeping this useless extension in browser

As others already said: it's completely useless. Autosave is silently failing, restoring manually saved session is practically impossible (at best you can reopen individual tabs) and it may randomly wipe your entire history of saved sessions. Then under Wayland desktop session even button to manually save a session disappeared and shortcuts do not work. The only way to do anything was opening it as tab where button came back. Also, "export sessions" button does nothing.

"Once again, opening saved sessions doesn't work. Only individual tabs can be opened from a saved list. Even reinstalling the addon and exporting the sessions beforehand doesn't help. It seems that somewhere indexing is set incorrectly, or due to inaccurate identifiers, the addon cannot correctly read in which order the tabs should be opened and in which window, which is causing this problem. It would be great if this could be fixed!