Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
Tampermonkey is the world's most popular userscript manager.
Reddit Enhancement Suite (RES) is a suite of tools to enhance your Reddit browsing experience.
A global dark theme for the web
Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.