Anime Wallpapers
Displays a anime background image (random) every time you open a new tab.
345 users
Ctrl + Number for Group Speed Dial
Makes dials in GroupSpeedDial add-on addressable by Ctrl + [0-9] keystrokes
343 users
Web Archive Viewer
Easily view archived (cached) webpages via seven different engines.
343 users
Notepad
A simple yet powerful notepad with HTML5 support and more
342 users
Block URLs, Domains or Keywords
Site blocker. Blocks URL, Domain or URL with keywords. Redirect. It is the rework of my chrome extension! Not stable, but works!
341 users
Multi URL Opener
Open multiple URLs at the same time in one click! Do you check every day a few specific sites? And you're getting tired of opening them one-by-one? Start being lazy by using this add-on!
340 users
Copy Link Button / Copy Frame or Page URL
Copy Link button for the main toolbar (or address bar). Use the right-click context menu to "Copy Framed Page URL". See the full description and screenshots for all the "how to."
339 users
tab list
Show a list of open tabs in plain text for easy backup
338 users
Shorten me - URL Shortener
Shortens links and current tab's url using a short-url service.
338 users
Custom Right-Click Menu
Create your own new entries in the right-click menu. Add custom JavasScript scripts, links, sub-menus and custom CSS stylesheets that activate when you click them in your right-click menu and do anything you want all from your right-click menu.
335 users
tabs2txt
This add-on provides a button to copy the URL strings of all active tabs in a window to a scratchpad, delimit them with newlines, and provides the ability to copy the list to clipboard. The reverse operation is also supported (txt2tabs).
334 users
ZButton+: Undo Close Tab
Adds Undo Close Tab Button
334 users
TST Auto Group Tabs
Provides ability to group newly opened tabs automatically in various conditions with Tree Style Tab.
334 users
LoadTabOnSelect
Load newly-opened background tabs on selection, rather than automatically in the background. This addon uses the WebExtensions API, and therefore fully supports Firefox 57+.
334 users
Tab Close Gold
Tired of unwanted popups? Leftover launcher tabs got you down? Want a simple extension to auto close tabs? Then look no further!
333 users
History Auto Delete
Automatically delete the browsing history of the registered sites
333 users
Workona Tab Suspender
Suspend your browser tabs to save memory.
332 users
Google Voice (Pin Tab)
Switch to Google Voice (Pin Tab) with a single click or a Hot Key (Alt+V)!
332 users
NextPrev Page
Displays the next or previous page by incrementing or decrementing the last number in URL.
331 users
Smart Prevent Duplicate Tabs
Prevents AUTOMATIC creation of new tabs or repeating tabs when two or more tabs have the same addresses. The process of closing repeated tabs is automatic based on the settings that you can determine within the extension/add-on.
331 users
Disable Page Visibility API
Firefox add-on to disable the Page Visibility API. This prevents e.g. video conferencing systems from tracking whether you are currently in another window.
326 users
Auto Mute Plus
Fork of Auto mute. Takes the mute new tab functionality and adds a toggle button, a whitelist, a blacklist, mute all tabs and unmute all tabs.
324 users
Car Racing
Do you like to play in racing? Then the game Car Racing is just for you. Excellent game is always in the browser!
322 users
Recurring emails for Gmail
Sends your emails at a later time once, or recurring every X hours/days/months/years
321 users
Launch Gmail
Gmail toolbar button:- - Opens Gmail in a new tab (https://mail.google.com) - Neat icon
321 users