SessionPage is a Firefox extension that display a list of your unclosed pages(tabs) in last session in a start page, so you have a choice to decide which one you want to open again. instead of just open them all(the default session restore behavior of Firefox ), which sometimes may be slow.
Features:
1. Display a list of your unclosed pages(tabs) in last session in a start page quickly, so you have a choice to decide which one you want to open again. and a "Open All" button is provided.
2. Open your unclosed pages offline. usally you can't do that by using history.
3. It can co-exist with Firefox's session restore, it just open an additional page.
4. Show currently opened pages(tabs).
It's a good tool for users that like to keep many pages open, for example, developers that like to keep some articles open in browser.
I think it's one of the most useful Firefox extensions. :-)