Add useful extra features to Gmail, like hierarchical labels, an unread message icon on your browser tab, file attachment icons, and more.
CLEO (Compact Library Extension Organizer) is a Firefox extension that works with FEBE* to package any number of extensions/themes into a single, installable .xpi file.
Import/Export your Firefox extension preferences
Displays an icon in the tooltip or next to the cursor indicating the target of a link.
List-it is a fast, simple, 100% Free+Open Source (MIT License) note-taking tool for Firefox. Designed by a research group at MIT, List-it lets you quickly take short notes to yourself + quickly access them whenever and wherever you need em.
This extension will enable you to organize your status bar icons. You can now rearrange or remove any item (icon or text) in the Firefox status bar. If your status bar is full and cluttered like mine was, give this a try.
Copy marked text, paste it and Go to the URL on a new tab immediately