Explore powerful tools and features to customize Firefox and make the browser all your own.
View archived and cached versions of web pages on 10+ search engines, such as the Wayback Machine, Archive.is, Google, Bing, Yandex, Gigablast, WebCite, Sogou, Memento, Naver and Yahoo Japan.
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
New Tab Override brings back the ability to change the page which is shown when opening a new tab.
Voice Fill uses speech recognition to enable voice search on Google, Yahoo and Duck Duck Go search pages. You can see it in action in this video: https://www.youtube.com/watch?v=wjvM18UWMmM
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
A secure and free password manager for all of your devices.
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
Tons of features to improve your user experience on YouTube™.
This is probably a laser cat add-on so you can shoot laser cat lasers at things.
Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname
Build, save and share beautiful Firefox themes.
A customizable password protected website blocker and redirector