Newest Extensions
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Tab Clicking Options Requires Restart
Select actions for various clicking events on a tab or the tab...
Folderpane Tools Requires Restart
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
ConQuery Requires Restart
Context searching for everyone and URL manipulation tool for advanced users...
FlashGot Mass Downloader Requires Restart Featured
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
JavaScript Debugger Requires Restart
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aimed to provide a powerful JavaScript debugging environment for Mozilla based browsers.
Mozilla Archive Format, with MHT and Faithful Save Requires Restart
— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!
DownThemAll! Featured
The first and only download manager/accelerator built inside Firefox!
Linkification Requires Restart
Converts text links into genuine, clickable links...
Quote Colors Requires Restart
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.
Moji Requires Restart
An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.
Image Zoom Requires Restart
Adds zoom and rotation functionality for images...
Forumzilla Requires Restart
Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...
BBCode Requires Restart
Adds BBCode, HTML, XHTML & Symbols formatting to the context menu for forums.
Launchy Requires Restart
Launchy will enable you to open links and mailto's with external applications...
InspectorWidget Requires Restart
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
wmlbrowser Requires Restart
Simulate WAP browsing by viewing WML (Wireless Markup Language) pages.
User Agent Switcher Requires Restart
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.
To create your own collections, you must have a Mozilla Add-ons account.