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Addons Quick Search Requires Restart

Type first letters of add-on name to find them in the list or press Ctrl+↑/↓ to switch between add-ons categories.
Additionally remember and restore last selected item in each list.

Rated 5 out of 5 stars (12)
5 users

KeePass Helper Requires Restart

Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.

Rated 4 out of 5 stars (40)
9 users

Stylish Tools Requires Restart

Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey

Rated 4 out of 5 stars (3)
3 users

Window Master

Functionality for multiple screens and windows. Easily open links in other windows or on other screens, move or merge tabs, and move or merge entire windows. With graphical controls for grid positioning.

Rated 4 out of 5 stars (23)
2 users

Return Receipt Toolbar Button Requires Restart

Allow you to add a Return Receipt button to mail compose window toolbar.

Rated 5 out of 5 stars (21)
138 users

New Mail Attention Requires Restart

This addon calls attention to main window on new message arrival.

Rated 4 out of 5 stars (52)
31 users

JunQuilla Requires Restart

1) adds column with percent likelihood that a message is spam, 2) extends junk status column to show why a message was classified as junk/good, 3) adds an Uncertain folder for messages needing user decision.

Rated 4 out of 5 stars (29)
54 users

Personal Level Indicators Requires Restart

Shows an indicator so you can tell if an email was addressed only to you (»), a group (›), or a mailing list.

Rated 4 out of 5 stars (11)
21 users

Slashy Requires Restart

Fixes Windows backslash file separators in links and images and other types.

Rated 4 out of 5 stars (5)
1 user

Live HTTP Headers (Fixed By ITWorld.com.pk) Requires Restart

View HTTP headers of a page and while browsing.
Live HTTP Header Fix By Danyial ITs Working On Firefox Again Fixed Reply Problem

Rated 4 out of 5 stars (6)
1 user

AutoPager Fixed Requires Restart

AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.

ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!

Rated 3 out of 5 stars (53)
1 user

Rikaichan Japanese-Hungarian Dictionary File Requires Restart

This is a dictionary file add-on for the Rikaichan extension.

Not yet rated
0 users

Column Reader

Web reader for wide screens and long documents. Read with pleasure in attractive layouts.

Rated 5 out of 5 stars (14)
4 users

Irvine ContextMenu Requires Restart

Downloads links and images with Irvine.

Rated 5 out of 5 stars (25)
1 user

Safe for Amoled

Darkens the background of the page

Rated 3 out of 5 stars (19)
2 users

Restartless 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 4 out of 5 stars (204)
16 users

No More Install Delay

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.

Rated 4 out of 5 stars (10)
1 user

ImageTweak: zoom/rotate images and videos! Requires Restart

A no-clutter image viewer for Firefox that allows you to zoom, rotate and display images/videos against a custom background. ImageTweak is a must-have addon for any photographer or photography-loving user.

Rated 4 out of 5 stars (95)
8 users

Show Password On Input Requires Restart

Gives an option to show the master password on input

Rated 4 out of 5 stars (11)
16 users

Show File Size2 Requires Restart

Shows the File Size in the download dialog.

Rated 5 out of 5 stars (12)
1 user