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).
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.
Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...
Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.
Notifier for gmail, yahoo, hotmail, aol and more webmails.
X-notifier(aka WebMail Notifier) checks your webmail accounts and notifies the number of unread emails...
Supports : gmail, yahoo, hotmail, POP3/IMAP, facebook, twitter and more
Status bar widgets and progress indicators for Firefox 4+
Make any pages' search functionality available in the Search Bar (or "search box")...
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
Expands the context menu's 'Search for' item into a list of installed search engines, allowing you to choose the engine you want to use for each search.
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
Send referers only when staying on the same domain.
You can whitelist domains with wildcards and configure other things, look in the preferences page of the addon in the addon manager.
ImgLikeOpera allows load only the images that you want in Firefox browser. This extension is very useful for non broadband users...
Collections are groups of related add-ons that anyone can create and share.Explore Collections