Copy Plain Text 2 Requires Restart Featured
Copies text without formatting
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
Smart HTTPS Featured
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.
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.
Tab notifier Featured
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
Popup Blocker (strict) Featured
Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address
Messenger & Notifier for Facebook™ Featured
provides an easy access to messenger.com and notifies you of all new messages (via badge icon text)
Video Downloader Prime Featured
Easily download most popular video formats.
Gmail™ Notifier + Featured
Gmail™ Notifier Plus alerts you of new email messages. Users can also read or reply to emails, delete or mark them as read, all without having to open a new window.
Keyword Search Featured
Search in the address bar without changing your search engine.
Enhancer for YouTube™ Featured
One of the best extensions for YouTube™. All the features you need to make YouTube™ more awesome!
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!
Bloody Vikings! Featured
uBlock Origin Featured
Finally, an efficient blocker. Easy on CPU and memory.
Forecastfox (fix version) Requires Restart Featured
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
Now Available for: Firefox, Thunderbird and SeaMonkey!
Privacy Settings Featured
Alter Firefox's built-in privacy settings easily with a toolbar panel.
Reader is the ultimate Reader tool for Firefox.
A quick and minimalistic way to create bookmarks.
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!