Simple Session Saver by mhochoy

This add-on saves your tabs and opens them when needed.

It is useful in instances where you must close your browser and, upon reopening, want to open the same pages you had before closing.

To use this add-on, simply install and then right-click. You will see the 'Session Saver' context menu from which you can save and/or open. Saved pages that are already open will not open again.

This extension is simple in scope and will only do as described.