about:kittens Requires Restart

Baby cats and kittens in the about box...

No Caption

Hide the caption of Firefox

Switch Message Colour Requires Restart

Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.

UI Text Overrider

Provides ability to override UI elements' label, tooltip text, etc.

Select like a Boss

Select link's text just like a regular text (like in Opera'12 browser) - Select like a Boss ;)

AntiLostFilter Requires Restart

Фильтр для конференций AUTO.RU

Elegant Scrollbar Cursors

Display helpful, informative cursors for scrollbars.

ZenbuShiitake Requires Restart

Track your shipment Requires Restart

Link to tracking sites. (mainly Japanese companies)

WebMyStyles

Style the web your way- provides a GUI that allow web users to change the look-and-feel of arbitrary web pages to something more pleasant and accessible.

No Close Other Tabs Requires Restart

Removes "Close other tabs" context menu item.

Splash! (Compatibility Update) Requires Restart

Adds a splash screen. Supported in Firefox, Flock, Thunderbird, Sunbird, eMusic Remote, Songbird and Sunbird.

lolifox - Fierr MOD Requires Restart

Replaces the error page with a lolifox appearance with additional features.

Personasizer

Personasizer allows you to expose more of your persona's header image. Useful for personas that have text or an important part of their content cut off by the browser's navigation elements.

Personas Windows Classic Statusbar Requires Restart

“Personas” add-on installed, but bottom status bar still gray? This add-on modifies style so Personas footer can show. For desktop's gray “Windows Classic” theme (only Windows 2000 theme) with “Default” app theme. Requires Personas add-on ≤1.5.*.

Password Mask Changer

Changes the mask character used in password fields.

ClassicFox Requires Restart

ClassicFox fixes problems with the appearance of the default theme in Windows Classic.

Splash! (Compatible version of Firefox 4) Requires Restart

Adds a splash screen. Supported in Firefox, Flock, Thunderbird, Sunbird, eMusic Remote, Songbird and Sunbird.

Active Stop Button Requires Restart

Stop gif animation with button, context menu or Esc key

jQuery Requires Restart

jQuery and jQuery UI embedded in browser