To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Session Manager by bu11etpr00f
Rated 4 out of 5 stars
The only thing I would like to see added to this add-on, is the ability to see what tabs are tied to a session without having to open it first. (This way, you could choose which tabs you want to open out of a session instead of having to open ALL of them.)
The only reason I didn't give 5 stars is because I have had some trouble with corrupted session data before I upgraded Firefox to 3.x...we'll see how it goes.
To create your own collections, you must have a Mozilla Add-ons account.