Hide Menubar Requires Restart
Supports to hide Menu Bar automatically, you can press the ALT key to show it temporarily.
ImageTweak: zoom/rotate images and videos! Requires Restart
A no-clutter image viewer for Firefox that allows you to zoom, rotate and display images/videos against a custom background. ImageTweak is a must-have addon for any photographer or photography-loving user.
Dynamic creation of bookmark-style toolbar buttons which you can customize.
This extension provides various customization options for the Adblock Plus user interface.
Change your Personas theme on each browser load.
FLST (Firefox 4+) Requires Restart
Provides Focus Last Selected Tab and Tab flipping functionality (based on the FLST extensions by Gorgias and Gozer, but ported to Firefox 4/.../56 and repaired Tab flipping functionality). Enjoy!
Compact Menu 2 Requires Restart
Add a compact menu button to the navigation toolbar, and hide the menu bar.
ToggleDocumentColors_ Requires Restart
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
Add RSS icon into URL bar
Zorcher Requires Restart
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.
about:kittens Requires Restart
Baby cats and kittens in the about box...
LCD Clock Requires Restart
displays a LCD Clock in your Toolbar
Tooltip Plus Requires Restart
Show tooltips for links and images with URLs, icons, alt text, and long titles.
Fast Close Tabs Requires Restart
Closing the window closes the active tab instead of the window.
Link Status Requires Restart
Shows an icon on the status bar when the mouse cursor is over a link to a page you bookmarked or visited before. In Firefox 3.5 and later, the extension also offers an option to disable the visited link styling to reduce the risk to privacy.
KeePass Helper Requires Restart
Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.
Firesizer Requires Restart
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.
Classicish Add-on Manager Requires Restart
A restyling of the Add-on Manager to a more native appearance.
Keeps track of your browser tab number.
Dog Ears Requires Restart
Mark important parts of a webpage to easily relocate them.