Top-Rated Extensions

Subscribe

SmartTemplate4 Requires Restart

SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.

Rated 5 out of 5 stars (53)
19,094 users

Sun Cult Requires Restart

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

Rated 5 out of 5 stars (116)
3,794 users

Addons Manager Hilite

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.

Rated 5 out of 5 stars (19)
679 users

bioFOX Requires Restart

Bioinformatics tools on Mozilla based browsers

Rated 5 out of 5 stars (20)
300 users

Simple YouTube MP3 Button

Adds a small and simple button to YouTube videos that allows you to quickly download the audio of the video as an MP3 file (quality of the MP3 is as high as the video offers) without having to leave the page.

Rated 5 out of 5 stars (48)
35,176 users

Select like a Boss

Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)

Rated 5 out of 5 stars (38)
3,231 users

PrefBar Requires Restart

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Rated 5 out of 5 stars (41)
21,884 users

Irvine ContextMenu Requires Restart

Downloads links and images with Irvine.

Rated 5 out of 5 stars (25)
5,507 users

YouTube Video Center

Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.

Rated 5 out of 5 stars (12)
4,663 users

Drag-Select Link Text

Select link text with easy mouse gestures.

Rated 5 out of 5 stars (34)
1,344 users

Keyword Search

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (91)
8,364 users

Twitter App

Twitter App brings Twitter right into your Firefox Sidebar.

Rated 5 out of 5 stars (18)
12,163 users

Console² Requires Restart

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 (49)
6,172 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (179)
27,140 users

Screengrab (fix version) Requires Restart

Screengrab! saves webpages as images.
0.99 released!
New features: upload to internet

Rated 5 out of 5 stars (321)
117,195 users

Identity Chooser Requires Restart

Identity Chooser helps you to always use the correct identity when composing a new email.

Rated 5 out of 5 stars (98)
8,770 users

Menu Wizard Requires Restart

Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (202)
81,804 users

MinimizeToTray For FF 3.5 Requires Restart

MinimizeToTray For firefox 3.Minimizes Mozilla windows into the system tray.Note:I am going to remove this extension if the original creator make a FF 3 version!

Rated 5 out of 5 stars (121)
1,334 users

Message Seen Disable for Facebook™

Message Seen Disable for Facebook™ lets you turn off Facebook™'s Message Seen feature automatically for your account. You can still use Seen feature for others.

Rated 5 out of 5 stars (11)
7,717 users

Flagfox

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Rated 5 out of 5 stars (683)
451,777 users