FireStorage Plus! - Manage web storage
An extra Firebug tab which lets you inspect the local and session storage.
https://addons.mozilla.org/en-US/firefox/addon/firestorage-plus/
Contribute and make this plugin even better at https://github.com/NickBelhomme/firestorageplus
Main Contributor(s): Nick Belhomme
https://addons.mozilla.org/en-US/firefox/addon/firestorage-plus/
Zip the contents of the xpi directory excluding the directory itself. Rename the .zip extension to .xpi and open it with firefox