Tab Mix Plus enhances Firefox’s tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager with crash recovery that can save and restore combinations of opened tabs and windows.
Just found the plugin this morning and it’s great. Lifehacker says that it solves some of the memory leak issues in SessionSaver and since it manages a better alt-tab functionality as well as tab close buttons I was able to get rid of a few other plugins too.
