Beyond Australis Featured
Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!
Classic Theme Restorer Requires Restart
Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).
All builds & changelogs on versions page!
Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!
Piece together all of your add-on buttons and extras into your browser window in exactly the way you want them!
Theme Font & Size Changer Featured
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.
Classic Toolbar Buttons Featured
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.
Beta builds on versions page!
FindBar Tweak Featured
Between simple tweaks such as placing the findbar in the top corner, to the powerful "Find in All Tabs" tool, it has everything to make the Find Toolbar a powerful and accessible research tool!
Open With Photoshop is a new companion for web and graphic designers to open up any web image with Adobe Photoshop via a single and quick mouse click.
Makes every page (or only pages that you want) to have light text on dark background. Exact colors are customizable.
Permanently hides the Ads panel on the right side of New Yahoo! Mail, the 'Sponsored' email at the Top, and ads on the Left to give you a full-width Premium email experience for free! The other option, of course is to pay $50 a year to Yahoo! Inc. :)
Glass your Firefox gui with GlassMyFox (only possible on Windows 7 and Vista when AeroGlass is enabled). See instructions inside add-on description how to enable Glass on Windows 8.
Slim Add-ons Manager Featured
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.
Turn Off the Lights Featured
The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
An add-on that allows colouring Firefox in a Vivaldi style fashion.
Restores the default image style used for top-level images in previous versions of Firefox.
New Add-on Bar Requires Restart
Restore add-on bar which was removed in the Australis theme.
Vimperator Requires Restart
Make Firefox look and behave like Vim
NewScrollbars (aka NoiaScrollbars) Requires Restart
The "NewScrollbars"-extension replaces default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".
HTitle (discontinued) Requires Restart
Hide title bar if window is maximized.
[!] This add-on has been discontinued.
This extension created only for GNOME 3. It can create problems with another DE. However, you can use HTitle at your own risk (need enable "legacy" mode on settings).