Explore powerful tools and features to customize Firefox and make the browser all your own.
Lets you fix annoying sound problems in YouTube videos and such. Like audio in one channel only, too quiet or too loud. (Unfortunately, doesn't work on many other websites because of cross-domain issues — but it does work on YouTube.com!)
Show tabs like a tree.
Navigate, operate and browse faster with mouse gestures! A customizable mouse gesture add-on with a variety of different commands.
Automatically learns to block invisible trackers.
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.
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
This is probably a laser cat add-on so you can shoot laser cat lasers at things.
Extracts all links from web page, sorts them, removes duplicates, and displays them in a new tab for inspection or copy and paste into other systems.
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
Image Search Options provides a set of highly customizable reverse image search context menu options.