Review for Session Manager by sciamannikoo
Rated 5 out of 5 stars
Love it: it will reduce the mess on my tabs :)
One thing I would like to see, is the name of the session on FF window's caption (not to mention a different customizable icon).
This would help finding the right session on the windows task bar, when multiple sessions are open.
To create your own collections, you must have a Mozilla Add-ons account.