Rated 5 out of 5 stars
This add-on is excellent; it is hands-down the very best tab group add-on available for Firefox. However, with the bugs evident when used with the latest versions of Firefox, it is obvious that the complete lack of current support by Axel on this add-on means that the add-on is no longer viable as an ongoing tab group solution.
I have posted requests with Mozilla to look at making this functionality a part of the default Firefox experience. If you agree, please post your thoughts on my Mozilla Support post here:
Let's try to get this excellent functionality into the current versions of Firefox!