The Web Developer extension adds various web developer tools to the browser.
When you find something on the web that you want to view later, put it in Pocket. It automatically syncs to your phone, tablet or computer so you can view it at any time, even without an internet connection.
Hide My Ass! operates the most popular browser based web proxy online, this is our official extension that enables you to easily redirect your web traffic through our anonymous proxy network.
With the bit.ly Preview Plugin for Firefox, whenever you hover over a bit.ly URL on any web page, we display a tooltip showing the Page Title, Long URL, and any Click Data we have about the page the URL links to. If you hover over another short URL,h...
Note from Mozilla: This add-on has been discontinued. Try PDF Viewer instead.
PDF plugin for Firefox 3 on Mac OS X. Displays PDF documents in the browser.
Ever read a phrase online and think: "that would make a great domain name"? Domain Lookup is a Firefox extension that helps you discover valuable domain names while surfing the web. 60+ popular domain registrars are already supported.