Tools: |Space |Firefox OS Simulator, App-Manager |Add-Ons
The Web Developer extension adds various web developer tools to the browser.
AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
(former Google Dictionary and Google Translate)
In-line dictionary for any word you point to or double-click; whole page translation of any web page in another language.
This add-on allows one to customize the theme "Classic Compact". Options include: 10 different toolbar button sets; turning off gradient backgrounds; OS scrollbars; dark system color support; merging menu bar into one menu button; etc.
Toggles dictionaries automatically or manually and displays the currently selected one
Decorate NewTab's Background using NASA's Astronomy Picture of the Day.
Detects Duplicate Bookmarks when bookmarks are added and specify where is the previous URL. You can also search and delete duplicates URL already in your Bookmarks.
Firefox 13 support is available from http://bookmarkdd.mozdev.org in version 1.1.1.
Collections are groups of related add-ons that anyone can create and share.Explore Collections