Rated 5 out of 5 stars

This is my most important extension when installing Firefox on a new computer. I am a tab addict and frequently have dozens of tabs open; Panorama lets me group them now, but it's even more important to be able to save them. Before I had Session Manager, I bookmarked the tabs I wanted to save; now I have hundreds of bookmarks that I don't recognize. Loading sessions makes it easier to see at a glance what I was saving the pages for, and if I need to weed out old pages, it's easier to do that too.

This review is for a previous version of the add-on (0.7.9.1-signed).