Interface Customizations

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Dybutar No Restart

Dynamic creation of bookmark-style toolbar buttons which you can customize.

Rated 5 out of 5 stars (8)
123 users

Edit Bookmark Plus

Resize 'Add Bookmark' Popup / 'Edit This Bookmark' Popup, fixes tree selection bug, option to disable popup auto close & Update Url and/or Name of a bookmark with the Url/Title of current page.

Replacement of OpenBook addon

Rated 4 out of 5 stars (67)
3,779 users

Edit Custom Size Image

Fixes a bug in SeaMonkey Composer and Thunderbird Message Compose whereby the Image Properties dialog would always reset the image to actual size.

Not yet rated
11 users

Email this page

Simple SeaMonkey Email this page button

Not yet rated
9 users

Enhanced Priority Display

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (5)
1,036 users

Export All Certificates

Adds an option to export all root certificates.

Rated 3 out of 5 stars (2)
752 users

F.B. Purity - Cleans Up Facebook No Restart

F.B. Purity hides the ads, app spam and other annoying clutter from your facebook news feed, lets you increase the font size, change colours plus many more features and generally makes Facebook a lot less annoying to use.

Rated 5 out of 5 stars (89)
39,082 users

FAYT Revived

Regain possesion of your good "Find As You Type" search bar in Firefox and SeaMonkey!

Rated 4 out of 5 stars (4)
201 users

Fierr

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

Rated 5 out of 5 stars (51)
2,236 users

Firesizer

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 (129)
24,990 users

FireTray

A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...

Rated 4 out of 5 stars (261)
30,996 users

FlameFox 3 Rebrander

Rebrand SeaMonkey as Firefox 3 (by 2008WindowsVista and a11RyanC2)

Not yet rated
1 user

Folder Pane Cell Selection Type

Since 20070806 the MailNews folder pane has switched from its previous cell text selection to the full row selection which the Mozilla Suite used to use.

Rated 5 out of 5 stars (1)
6 users

FolderFlags

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (8)
4,105 users

Forecastfox (fix version)

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

Now Available for: Firefox, Thunderbird and SeaMonkey!

Rated 5 out of 5 stars (201)
60,900 users

Forecastfox Weather

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 (1,040)
81,126 users

Fragment Titles No Restart

Save better history for fragment URLs.

Rated 5 out of 5 stars (3)
60 users

From/To Column

Add a “From/To” column which shows the recipient if you are the sender.

Rated 5 out of 5 stars (2)
186 users

GNOMErunner Options

Allows to customize GNOMErunner theme

Not yet rated
486 users

GNotifier No Restart

Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.

Rated 5 out of 5 stars (13)
10,748 users