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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)
21,251 users

Sun Cult Requires Restart

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

Rated 5 out of 5 stars (116)
3,986 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)
707 users

bioFOX Requires Restart

Bioinformatics tools on Mozilla based browsers

Rated 5 out of 5 stars (20)
314 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 (318)
125,199 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)
3,257 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 (199)
75,464 users

Irvine ContextMenu Requires Restart

Downloads links and images with Irvine.

Rated 5 out of 5 stars (25)
5,556 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)
4,964 users

Drag-Select Link Text

Select link text with easy mouse gestures.

Rated 5 out of 5 stars (34)
1,365 users

Speed Start

Speed Dial & Start Page with flexible layout for fast access to sites via visual bookmarks

Rated 5 out of 5 stars (53)
7,127 users

Twitter App

Twitter App brings Twitter right into your Firefox Sidebar.

Rated 5 out of 5 stars (18)
12,881 users

Keyword Search

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (90)
8,767 users

rikaichan Requires Restart

Japanese to English/German/French/Russian dictionary. Just hover the mouse on top of a word, and a popup appears. Automatically de-inflects verbs and adjectives. Detailed kanji view...

Rated 5 out of 5 stars (93)
44,962 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 (40)
21,703 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)
6,593 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (179)
28,768 users

Form History Control Requires Restart

Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.

Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.

Control for which webpage form history is saved or not.

Rated 5 out of 5 stars (89)
24,446 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)
9,523 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)
1,487 users