FireSSH Requires Restart Featured
Gmail™ Notifier (restartless) Featured
Multiple account (or label) Gmail notifier (without storing passwords)
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
Duplicate Tabs Closer Featured
Detects and automatically closes duplicate tabs.
Pick & Save Images Featured
Here's a handy and powerful image saving tool for you to pick and save your favorite images in page! With thumbnail mapping, preference profiles, image filtering, and lots of flexible preferences & features!
Copy Plain Text 2 Requires Restart Featured
Copies text without formatting
Shut down the lights on YouTube.
Play YouTube™ Videos in Flash or HTML5 Player
EPUBReader Compatible with Firefox 57+ Featured
With EPUBReader you can read ePub files just in Firefox. No additional software needed!
YouTube No Buffer (Stop Autoplaying) Featured
A bulletproof approach to prevent YouTube from buffering videos
Tons of features to improve your user experience on YouTube™.
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!
iMacros for Firefox Featured
Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!
Translator, dictionary and text-to-speech for 103 languages. Select and translate on any page with a shortcut on double-click.
Messenger for Skype™ Web Featured
Access to Skype Web from within a toolbar panel. You can use this app to call your friends without the need to switch current browser tab
FireGestures Requires Restart Featured
A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.
Greasemonkey Requires Restart Featured