Apart from the empty modal Window that it seems to open on restart following a Firefox crash, this has saved my bacon more times than I care to remember.

I'm crap at keeping the number of tabs to a reasonable number and this helps me keep them around.

Много удобно и полезно. Някой път спасява положението. Като имаш отворен private window и нормален, ако затвориш първо нормалния и после private, firefox не ти запомня сесията, а това я помни :)

A really useful addon. It helps me saving tabs in sesions for later consulting while I can focus in another tasks without overloading the system memory.

Thanks of created this addons, It saved my life a few time: Firefox closed while opening 2 windows, it can't use the built-in restore feature since it only able restore single window. I've sent 5 dollar to you just now :)

btw, Just now got indexedDB issue, I don't have to delete storage folder, I just have to goto about:profile, open the profile+cut that folder, then restart web browser and the error gone

Permite volver a páginas ya visitadas, así como guardar sesiones con múltiples tabs

nice manager, works perfect.

Just what I needed :)

simply the best DL- Manager!

Please put it in the new firefox version

Alles was man braucht und nach mehreren Updates noch besser als der Vorgänger!

I'm very thankful for this addon as my WebExtension substitution of Session Manager by M.Kraft. I've used it since the beginning and I have never had any issues.
However, I've come to the point where sessions sync is the must have. This is why I have to change your great extension, despite that I like its UI and much more than the others.
Farewell and good luck! :)

Below is my original review 9 months earlier:
I am glad for the effort to bring Session Manager to WebExtensions. Still, in some cases I am using one instance of FF ESR with original Session Manager by Michael Kraft for its superior functions:
- auto saving sessions
- saving either whole session or just a particular window (what's even more useful for me).
It would be great to see the above in Tab Session Manager.
I also hope to find a top notch cooperation with Multi Account Containers, like auto saving window with a particular container tabs, so I can always start or exit my Personal, Work or other Container window and have my session saved.

This addon has improved dramatically over the past few months and the value is very good. The only thing I feel it lacks is sync option.

оченб удобно,спасибо разработчику.

In Mac, its a normal behavior that closing the firefox window by clicking the red button closes all the tabs while keeping firefox running in background, so automatic session restore does not work unless firefox is quit using Command+Q. Is it great that restoring the session that was closed the last works great with this add on. However is it possible to restore the session automatically from the last closed or autosave (whichever is latest) state when firefox is started when there was no firefox tab-window left (browser window only, ignoring the download, histrory, bookmark window or even the firefox program running in the background as the case with mac). This will make closing and restarting firefox window in mac so smooth, you may make this feature optional in the setting.

FRQ:
1. Restore last closed state or or autosaved state which ever is latest, when firefox window opens when there is no existing firefox browser window. (this makes it more intuitive to close firefox in mac using the red button and restarting).
2. Retina compatible high resolution logo of the add on, and may be a change of color of logo.
3. Relative time in the session list, such as 15 minutes ago, 1hr ago in addition to the existing timestamp.

Keep up the great work,
Milan