Review for Session Manager by Piro (piro_or)
Rated 4 out of 5 stars
Good. This helps me about creating multiple backups of sessions. For addon authors, single backup (created by Firefox itself) seems precarious, because we have to restart Firefox again and again.
This review is for a previous version of the add-on (0.6.6.2).To create your own collections, you must have a Mozilla Add-ons account.