Firefox is not a toy; it is a tool! There is a no Schnickschnack/knickknack collection: these add-ons are seriously useful and easy to use and configure for a more efficient Internet experience.
Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.
Display your Bookmarks Toolbar in more than one row! Be smart about hiding text and only showing favicons, displaying website info as tooltips. Autohide the Bookmarks Toolbar.
TooManyTabs allows you to store as many tabs as you like by adding extra rows in the Firefox! It saves your browser's space and memory as idle tabs are put aside. The extra rows also help to better prioritize and visualize your tabs.
A very simple extension to remove all the cookies of currently opened site. It adds an option to the Right Click menu of the page, and a Clear Cookies Button to perform this operation. It displays the status of operation in the status bar.
The fastest (yet safe) addon to close tab using mouse only! Close any tab by double clicking the tab. Close current tab by triple click anywhere on the page. Optionally middle click or double right click on page to close tab.
Add "Go Parent Folder" menu to context menu in The Library list view and Search result in Bookmarks Sidebar.
This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...
Record, bookmark and replay your browser activities in a snap with DéjàClick. Designed for Firefox, DéjàClick can handle the most complex websites - including AJAX, Flash, forms and more. With a single click you can repeat your most common tasks.
Collector's Note Easier to use than iMacros
Adds extension options dialogs to the Tools or Titlebar menu and includes toolbar icon.