Extras para Android

JavaScript Debugger por James Ross, Robert Ginda, outros

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.

ProfileSwitcher por Paolo "Kaosmos"

It adds some options to launch easily other profiles and the Profile Manager.

Disable Add-on Compatibility Checks por Kris Maglione

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Thumbnail Zoom Plus por David Adler

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

RefControl por James Abbatiello

Control what gets sent as the HTTP Referer on a per-site basis.

Shrunked Image Resizer por Geoff Lankow

Addons Manager Hilite por custom.firefox.lady

Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.

Browser Backgrounds por Baris Derin

Browser Backgrounds is the new Firefox extension that lets you install backgrounds directly on your browser.

Restartless Restart por Erik Vold

This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

No More Install Delay por trlkly

UPDATE: XPI delay has been removed in Firefox 40!

Disable the install delay in Firefox. New 2.0 version now includes GreaseMonkey scripts!

Unlike similar addons, this works on Firefox 4 and beyond.

Classicish Add-on Manager por Dagger

A restyling of the Add-on Manager to a more native appearance.

Is It Compatible? por eternicode

**Notice: This addon is no longer maintained.** Are your addons compatible with the next version of Firefox? Find out straight from the Addons window! **Version 0.6.0 is available from the Versions page, it was never approved by AMO**

Update Notifier por Todd Long

Note from Mozilla: This add-on has been discontinued. Try Add-on Update Checker instead.

Notifies you when updates are available for your extensions and themes.

Multiple Addon Deactivator por ChrisLE

Multiple Addon Deactivator (M.A.D) is an addon that can (de)activate one, many or each addon at the same time

Single Key Tab Switch por oyvindio

Single Key Tab Switch provides configurable single hotkeys for switching tabs, like the 'Single-key shortcuts' feature of the Opera browser.