Rated 5 out of 5 stars

le lopardo ar Beal. 24, 2012 · buan-nasc

I couldn't live without this add-on, it's very useful. It lets you save all your sessions (opened windows and tabs) so you can reopen them later, or reopen individual tabs or windows.
Also, the undo closed tab button is very handy.
Take a look at the options window so you don't miss any of its useful features.

The only thing that's missing could be Sync integration, so you could sync your saved sessions across different devices.