Review for Session Manager by Vesko Jl
Rated 5 out of 5 stars
That extension is great, but I've just had to downgrade my Firefox to v56, so I can use it again. I really like the FF Quantum release, but this extension is too important for me, so I'll wait until someone make it compatible with FF v57 (hopefully).
This review is for a previous version of the add-on (0.8.1.13).To create your own collections, you must have a Mozilla Add-ons account.