Userscripts

A userscript is a kind of lightweight browser extension, used to modify webpages.

firefoxcss

userchrome

WebExtension

Universal standard for creating add-ons that allow users to customize their web browser.

ad-blocker

Firefox

Firefox is an open source web browser from Mozilla.

browser-extension

firefox-addon

firefox-webextension

multiplatform

cross-platform

awesome-list

task-switcher