Rated 5 out of 5 stars

per Firefox user 39d95a el des. 14, 2017 ·

This excellent add-on fills a big lack of Firefox for the backups and the restorations of the tabs.
Not useful only in case of problems but for example it allows to manage profiles of tabs by theme.

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