Rated 5 out of 5 stars

This is a remarkable extensions, I've used it for years. A really good way to manage and categorize browsing sessions for various tasks. Ideal when you are in the thick of some research and something more pressing comes up, you can save the session and jump back in a week later as if the tabs had never been closed. You can also make a session "live" if you wish so as when you open such a session any changes will automatically be saved. Everything you'd expect to manage your saved sessions, rename sessions, group sessions, etc are all there. My mosted useful and used tools for Firefox.

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