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).
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.
Visual bookmarks for Firefox. (Works with all latest versions of Firefox)
Resize the Youtube.com video player as much as you like!
Collections are groups of related add-ons that anyone can create and share.Explore Collections