Everything I need to just using firefox when I install it on a new machine. KidZUI, Glubble and Fotofox are for certain machines.
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
Browser Backgrounds is the new Firefox extension that lets you install backgrounds directly on your browser.
Easy cache status & management from status...
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.
Drag, drop and arrange pictures adding photo titles, and create albums by multi-selecting photos, and then upload to one of a selection of online photo services - all of this without interrupting your Internet browsing.
Fission combines address bar and progress bar (Safari style). This makes the progress bar more visible and allows for a nice visual effect.
Collections are groups of related add-ons that anyone can create and share.Explore Collections