Need to test your web pages out in Internet Explorer, Chrome, Safari, Opera (or anything else for that matter)?
Open With adds options to various parts of your browser for opening the current page in another browser.
Discover useful traffic insights about the websites you visit. Find out how big the websites you visit are on the internet and in their categories. Get instant knowledge on the main sources of traffic bringing users to the website you’re viewing.
Use twitter right from the sidebar of Firefox as you browse the web. No need to go to twitter.com to send and receive tweets. Share sites as you browse with just a click. Send & receive tweets, dms, retweets, and more. Twitter timeline to go.
Soccer scores for over 200 leagues and cups of 60 countries - live and almost instantly.
Note from Mozilla: This add-on has been discontinued. Try Google Minimalist instead.
CustomizeGoogle enhances Google by adding information and removing unwanted information.
An extension that allows for the use of dynamic commands in Firefox.
A maintained version can be installed via: https://bitbucket.org/satyr/ubiquity/downloads/tip.xpi
Collections are groups of related add-ons that anyone can create and share.Explore Collections