Top-Rated Extensions

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Sun Cult

Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...

Rated 5 out of 5 stars (102)
5,350 users

Console²

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Rated 5 out of 5 stars (45)
16,758 users

NoScript Security Suite

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Rated 5 out of 5 stars (1,321)
2,228,391 users

lolifox - Fierr MOD

Replaces the error page with a lolifox appearance with additional features.

A new version 1.0.9.0 (not fully reviewed by Mozilla yet) is available here ( https://addons.mozilla.org/addon/7871/versions )

Rated 5 out of 5 stars (11)
4,974 users

Restartless Restart No Restart

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

Rated 5 out of 5 stars (136)
45,728 users

Extension Auto-Installer No Restart

For extension developers: allows automatically adding or updating browser extensions, e.g. with command line tools.

Rated 5 out of 5 stars (10)
2,928 users

Nuke Anything Enhanced

Allows you to hide almost anything via context menu 'Remove Object'.

Rated 5 out of 5 stars (117)
23,978 users

Remote XUL Manager No Restart

Manages the Remote XUL whitelist to allow websites and local files to load XUL content.

Rated 5 out of 5 stars (29)
30,874 users

Bluhell Firewall No Restart

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (128)
123,243 users

Clean Links No Restart

Converts obfuscated or nested links to genuine clean links.

Eg: http://somesite.com/?to=www.example.comhttp://www.example.com/

Rated 5 out of 5 stars (48)
25,261 users

AutoPager

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

Rated 5 out of 5 stars (360)
118,777 users

Fierr

Replaces the error page with a more stylish appearance with additional features.

Rated 5 out of 5 stars (44)
4,011 users

DOM Inspector

DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.

Rated 5 out of 5 stars (55)
153,403 users

smftn

download directly from QQ file transportation over 7/200 times limit

Rated 5 out of 5 stars (6)
92 users

BetterGaia

Change the way you view and experience Gaia.

Rated 5 out of 5 stars (24)
599 users

Are You Watching This?! Sports

Sports Scores and News for the NFL, NBA, MLB, NHL, College Basketball, College Football, Soccer, NASCAR and more, from the highest-rated sports add-on for Firefox!

Rated 4 out of 5 stars (100)
1,188 users

FB Phishing Protector No Restart

Protects you from Phishing or Scams (through XSS injection attacks) while you're on Facebook™ - Version 4.2 introduces a Tracking Protection feature as well.

Rated 5 out of 5 stars (18)
43,436 users

Silent Block

Minimum and fast URL blocking by regular expressions.

Rated 5 out of 5 stars (15)
5,468 users

AVIM

An input method editor (IME) for Vietnamese. Type fully-accented Vietnamese directly into any Web page or dialog box using a standard keyboard.
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Bộ gõ tiếng Việt để nhập dấu trực tiếp vào bất kỳ trang Web và hộp thoại dùng bàn phím bình thường.

Rated 5 out of 5 stars (26)
4,045 users

Disable Add-on Compatibility Checks No Restart

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

Rated 4 out of 5 stars (82)
58,442 users