Shows source comments for advanced application preferences in about:config
You can choose items displayed in the sidebar.
This extension did not work in MacOS X.
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
Add sub-menus to History Menu for previous days' history.
Facilitates opening multiple tabs from the Bookmarks Menu and various other bookmark/history related dropdown menus. Less need to keep reopening menu, without using the sidebar. Optional auto-closing feature adds extra convenience.
Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.
Allows Personas to work in private browsing windows
Create and manage add-ons made from Greasemonkey and Scriptish user scripts
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
Feature rich XPath generator, editor, inspector and simple extraction tool...
Lets you take a peek at the files under the hood of your Firefox installation and profile...