For FF 9

by smayer97

40 Add-ons in this Collection

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 2,899 reviews

232 users

The first and only download manager/accelerator built inside Firefox!

NetVideoHunter by netvideohunter

Rated 4 out of 5 stars 538 reviews

42 users

This add-on is a downloader that lets you easily download videos from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte and music for example from SoundCloud, Grooveshark and from many other sites...

User Agent Switcher by chrispederick

Rated 4 out of 5 stars 336 reviews

163 users

The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser.

NoRedirect by Kai Liu

Rated 4 out of 5 stars 95 reviews

7 users

NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.

Mozilla Archive Format, with MHT and Faithful Save by Christopher Ottley, Paolo Amadini

Rated 5 out of 5 stars 359 reviews

41 users

— 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!

JavaScript Debugger by James Ross, Robert Ginda, others

Rated 4 out of 5 stars 52 reviews

926 users

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.

Canadian English Dictionary by Paul Schmiedge

Rated 4 out of 5 stars 82 reviews

9,361 users

For some reason, Mozilla doesn't have a Canadian localization team, but I know that even the British dictionary doesn't quite cut it for the truly patriotic.

ProfileSwitcher by Paolo "Kaosmos"

Download Now

Experimental

Rated 4 out of 5 stars 114 reviews

162 users

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

Disable Add-on Compatibility Checks by Kris Maglione

Rated 4 out of 5 stars 120 reviews

178 users

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

Thumbnail Zoom Plus by David Adler

Rated 4 out of 5 stars 397 reviews

3 users

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.

RequestPolicy by Justin Samuel

Rated 4 out of 5 stars 215 reviews

7 users

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Image Zoom by Jason Adams

Rated 4 out of 5 stars 355 reviews

163 users

Adds zoom and rotation functionality for images...

Quick Locale Switcher by ppclick

Rated 3 out of 5 stars 88 reviews

67 users

Allows you to quickly switch to a different language (User Interface, Spell Checker Dictionary and Website content) in your Mozilla application.

Toolbar Buttons by Button Guy

Rated 4 out of 5 stars 372 reviews

314 users

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

YesScript by Jason Barnabe, Andras Horvath

Rated 4 out of 5 stars 225 reviews

33 users

A JavaScript blacklist
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