Thank the developer for this, but honestly I'm only trying it because last FF update ruined most of my extensions, including the excellent Session Manager.

Even that one never was 10/10 if you compare to the ones available to Chromium/Chrome (features are 10/10, but UX not).

This one accomplishes the bare minimum regarding saving sessions, UI is not only too simplistic (although nice to have it as a dropdown from the extension bar button) as even a bit confusing about what it is doing, after all.

Anyways, I won't be using this at its current state, but will be watching to its evolution. Again, thank you to the developer for sharing your work,.

Since it loads all tabs at once, my computer just dies when I try restoring my session..