Interface Customizations

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Sea Fox Requires Restart

Transform SeaMonkey into Firefox 3.x

Rated 4 out of 5 stars (14)
70 users

Duplicate This Tab Requires Restart

This add-on provides the much needed feature update of Tab Duplication to Mozilla Browsers. Features Supported include Duplication of Browser Tabs, Detaching Tabs and Merging All Windows.

Rated 4 out of 5 stars (39)
63 users

GNotifier

Add-on for Thunderbird that replaces the built-in notifications with OS native ones. It supports most Linux Desktop Environments as well as Windows 8.1/10.

Rated 5 out of 5 stars (48)
57 users

MonkeyFix Requires Restart

Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).

Rated 5 out of 5 stars (3)
52 users

Tab Wheel Scroll

Switch tabs by scrolling with the mouse wheel in the tab bar.

Rated 4 out of 5 stars (162)
50 users

Sort and Search Customization Dialogs Requires Restart

Sort and search for buttons in (any) toolbar customization dialog

Rated 5 out of 5 stars (18)
49 users

SeaMonkey Vertical Tab Bar Requires Restart

Tab bar on the side of the window for SeaMonkey.

Rated 4 out of 5 stars (7)
45 users

Forecastfox Weather Requires Restart

Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Rated 4 out of 5 stars (932)
44 users

URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (23)
42 users

Tabs Menu Requires Restart

Adds a Tabs menu to the main menu that lets you easily change between tabs.

Rated 4 out of 5 stars (32)
39 users

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 4 out of 5 stars (10)
36 users

Firesizer Requires Restart

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (127)
33 users

Old Default Image Style

Restores the default image style used for top-level images in previous versions of Firefox.

Rated 5 out of 5 stars (92)
31 users

IE Tab + (FF 8+, 7, 6, 5, 4, 3.6, 3.5, SeaMonkey) Requires Restart

IE Tab + is an enhanced version of IE Tab. It supports FF 3.5 or greater, integrates IE Tab with Adblock Plus in the IE Tab engine, and synchronizes cookies between IE and Firefox. You can easily import settings from the original IE Tab into IE Tab +

Rated 3 out of 5 stars (85)
27 users

Password Tags Requires Restart

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (15)
26 users

Profile Buttons

A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.

Rated 3 out of 5 stars (9)
26 users

Page Colors & Fonts Buttons

Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.

Rated 5 out of 5 stars (8)
24 users

Tab Numbers

Keeps track of your browser tab number.

Rated 4 out of 5 stars (6)
24 users

Scriptish Requires Restart

The greatest user script engine on the Internet (a fork of Greasemonkey).

Rated 4 out of 5 stars (109)
23 users

Right Links Requires Restart

This extension allows to open links in new tabs with right-click directly and using “long” left-click.
This is very useful for touchpads on notebooks and for mice without middle button.

Rated 5 out of 5 stars (148)
21 users