Explore powerful tools and features to customise Firefox and make the browser all your own.
Redesign your favourite websites with Stylus, an actively developed and community driven user-style manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalised CSS stylesheets.
Select a number of links with a rectangle and open them in new tabs. You can also lasso checkboxes to quickly check or uncheck them. Works with radio buttons as well.
Fight back against advertising surveillance
Stream only Audio on Youtube
Protects you against tracking through "free", centralised, 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