Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
This add-on is a downloader that lets you easily download videos and music from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte, DivShare and music for example from SoundCloud, Grooveshark and from many other sites...
The Web Developer extension adds various web developer tools to the browser.
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
Customize application menus:
Rearrange or remove menuitems from the main context menu (right-click menu) and main menubar (File Edit View etc.)
Screengrab! saves webpages as images... but not for new versions of Firefox.
FF changes too fast and I don't have the time to maintain it anymore. Bugs have developed that I am not in a position to investigate.
Therefore, Screengrab is EOL.
Fixing Thunder, QQ Xuanfeng, Flashget, Rayfile, Namipan, and QQ Temporary Chatting links. Converting URL text of above types on the webpage to a Hyperlink.
Move Firefox Button to anywhere you want, and make it also available in Full Screen mode, or when Menu Bar is showing.
Note from Mozilla: This add-on has been discontinued. Try DragIt instead.
Allows you to open links in new tabs, and do more with drag and drop gestures easier.
Returns the 'Properties' menu item that was removed in Firefox 3.6 to the context menu.
Collections are groups of related add-ons that anyone can create and share.Explore Collections