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).
URL Link is a small Firefox and Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
Creates a menu to access google bookmarks from any computer. Needs Google Account to use this extension.
This extension adds a new "FaviconizeTab" option to the context menu of the tab...
Note from Mozilla: This add-on has been discontinued. Try FXChrome instead.
Chromifox Basic is a coat of chrome for Firefox.
Fission combines address bar and progress bar (Safari style). This makes the progress bar more visible and allows for a nice visual effect.
Search Cloudlet inserts smart tag clouds into Google / Yahoo / Twitter interface to help you search faster. This free productivity-boosting add-on was featured at LifeHacker, PC World, Website Magazine, etc. Install it now to add magic to your search
Collections are groups of related add-ons that anyone can create and share.Explore Collections