Doesn't work any more Rated 1 out of 5 stars
Very nice add-on, but unfortunately it doesn't work any more with the actual FF versions. It seems that the author stopped updating this add-on. Very sad. :(
Followup: It seems I can't answer directly to the developers response. So I'm doing it here:
Yes, it works a little bit with FF 19. But there's a big issue: Suddenly TabGroup Menu "forgets" names of the tab groups. It renames it to "(Anonymous: xyz)", or some tab groups are simply disappearing. This appears very often.
I'm using FF 19 and it still works.