Is there anyway to reliably save FireFox tabs and tab groups?

This question actually applies to Mac and Linux/BSD desktop as well. I believe I would get more answers posting in Windows section.

FireFox can save the tabs and tab groups and reopen them for you when you open the browser again. Or you could use the Restore Closed Tabs option. However, this is not reliable enough. If anything funny happens to the browser, like it crashed for whatever reason, next time it's opened the useful record of previous tabs would be lost. Besides, if I have multiple FF windows, I must remember to close the important one last or it would be forgotten. I've a habit of opening 100+ tabs in different groups, and plenty of hard work got lost this way.

The history function of the browser is not very helpful in this case because it only shows the tabs I opened, in chronological order, and ignores when I closed them. I need a way to revive all the tabs that were still open right before the last close/crash, and filter out the tabs I closed manually before.

Ideally there should be some kind of incremental backup time machine which can tell me something like "those are the tabs and tab groups you had open 30 seconds before last crash, and those are 120 seconds before that one". Is there any extension of something to do this?

 

I use session buddy on chrome. For Firefox, I think there is a extension called session manager.

 

Installed session manager and looks great so far. Thanks.