Interface Customizations

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Single Key Tab Switch Requires Restart

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 (28)
749 users

Slim Add-ons Manager

The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.

Rated 5 out of 5 stars (49)
6,764 users

SM Home Button Requires Restart

Navigation bar Home Button (resurrected by sailfish)

Not yet rated
25 users

Sort and Search Customization Dialogs Requires Restart

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

Rated 4 out of 5 stars (14)
454 users

Speed Start

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

Rated 5 out of 5 stars (57)
5,447 users

Stylish Requires Restart

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (844)
332,036 users

Stylish Sync

Sync engine for Stylish with backup / restore facility.

Rated 5 out of 5 stars (25)
3,774 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)
1,051 users

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (6)
705 users

Tab Clicking Options Requires Restart

Select actions for various clicking events on a tab or the tab...

Rated 4 out of 5 stars (70)
25 users

Tab Numbers

Keeps track of your browser tab number.

Rated 5 out of 5 stars (5)
544 users

Tab Wheel Scroll

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

Rated 4 out of 5 stars (129)
8,779 users

tab-counter Requires Restart

shows the number of tabs in the status-bar

Rated 4 out of 5 stars (6)
376 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)
1,592 users

TaQuilla Requires Restart

Automatic tagging using Bayesian statistics

Rated 4 out of 5 stars (13)
176 users

Tategaki Requires Restart

Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
23 users

Telegram Web Messenger

Telegram Web Messenger brings Telegram right into your Firefox Sidebar.

Rated 5 out of 5 stars (1)
484 users

Text2Link Requires Restart

Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.

Rated 4 out of 5 stars (41)
1,952 users

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (174)
93,682 users

ThreadKey Requires Restart

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)
1,399 users