Interface Customizations

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FolderFlags

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (8)
59 weekly downloads

Duplicate Tab Blocker No Restart

Prevent duplicate tabs. Allow only one tab for a url. If you click a link that is already opened in a tab, then existing tab would be focused instead of opening a new tab. This works even across firefox windows.

Rated 3 out of 5 stars (10)
54 weekly downloads

MonkeyFix

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 weekly downloads

Single Key Tab Switch

Single Key Tab Switch provides configurable single hotkeys for switching tabs, like the 'Single-key shortcuts' feature of the Opera browser.

Rated 4 out of 5 stars (26)
52 weekly downloads

True Full Screen in SeaMonkey No Restart

This extension enables true full screen mode in SeaMonkey for HTML5 video players, slide-shows, etc. and also for full screen invoked manually with the F11 key.

Rated 5 out of 5 stars (1)
45 weekly downloads

No Caption No Restart

Hide the caption of Firefox

Rated 4 out of 5 stars (11)
45 weekly downloads

ToggleDocumentColors_

Adds a toolbar button and keyboard shortcut to switch between the default page colors and user-defined colors.
Firefox shortcut: Control-Shift-C
SeaMonkey shortcut: Control-K

Rated 4 out of 5 stars (13)
45 weekly downloads

CheckBoxMate Lefedor Edition

Check multiple checkboxes by drawing a rectangle around them. FF6 version.
I've made this version since i did need it for use with RTM,

Rated 4 out of 5 stars (9)
37 weekly downloads

InspectorWidget

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (4)
36 weekly downloads

ThreadKey

Strike the 'T' key to sort messages by thread, strike the 'U' key to sort them unthreaded again, just like the 'G' key switches to Grouped By Sort view

Rated 4 out of 5 stars (23)
32 weekly downloads

tab-counter

shows the number of tabs in the status-bar

Rated 4 out of 5 stars (6)
30 weekly downloads

Enhanced Priority Display

Enhanced thread pane display of message priorities.

Rated 5 out of 5 stars (5)
28 weekly downloads

Duplicate Tab

Duplicate Tab allows you to clone a tab along with its...

Rated 5 out of 5 stars (182)
28 weekly downloads

Joomla! Admin

Joomla! Admin brings ease & convenience to your computer/workstation, by providing you with a ready-to-use menu options that balms your repetitive work :) Now, Go to the Administrator page or Duplicate the current tab to a new tab/window in a jiffy!!

Rated 5 out of 5 stars (5)
27 weekly downloads

Password Mask Changer No Restart

Changes the mask character used in password fields.

Rated 5 out of 5 stars (4)
25 weekly downloads

FAYT Revived

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

Rated 4 out of 5 stars (4)
22 weekly downloads

Sort and Search Customization Dialogs

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

Rated 4 out of 5 stars (13)
22 weekly downloads

Link Status Redux

Shows an indicator on the status bar in front of the link address when the mouse cursor is over a link to a page you have bookmarked or visited before.

Rated 4 out of 5 stars (30)
22 weekly downloads

Zorcher

Selecting a small text on the page do not need to copy it into the search bar of your browser or search engine. Just press the right mouse button and select the search service from the available list.

Rated 5 out of 5 stars (10)
22 weekly downloads

CloseTab

Lightweight add-on which adds to right-click menu 3 items allowing to close current tab, open a new one and reopen closed one. Right-click anywhere on site instead of using keyboard or finding buttons.

Rated 4 out of 5 stars (3)
21 weekly downloads