Rated 5 out of 5 stars

It does what FF should have done by default. One of the reasons I have been staying with FF during all these years. What FF57 did is a shame. A large part of my work is to find the right websites, I am regularly having 30-70 tabs open. Depending on my actual task, I have to open the carefully selected tab assortment each time when I start a browser session. Now I cannot even import my old sessions. They are gone overnight with the update to FF 57+. It's time to move on, I guess. That's Microsoft and Google policy.

This review is for a previous version of the add-on (0.8.1.13).