OPIE

OPIE (Ordered Preference Import/Export) is a Firefox extension that allows you to import and export your installed extension preferences. This is useful when installing extensions in a new profile, or synchronizing multiple Firefox installations. Once installed, OPIE is available from the Firefox Tools menu. An icon can be placed on the toolbar via (right-click on toolbar) > Customize... OPIE is a companion to FEBE and CLEO.