Example Firefox add-ons created using the WebExtensions API
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Updated
May 11, 2024 - JavaScript
Universal standard for creating browser extensions.
Working through a W3C charter group, Mozilla has partnered with Microsoft and Opera to define a browser extension API that works across multiple browsers.
There is currently a preliminary specification that matches what Google has implemented in Chrome so that extensions written to the specification could potentially work on Chrome, Edge, Opera and Firefox.
Example Firefox add-ons created using the WebExtensions API
Violentmonkey provides userscripts support for browsers. It works on browsers with WebExtensions support.
⚡️ A template for building cross browser extensions for Chrome, Opera & Firefox.
A command line tool to help build, run, and test web extensions
A browser extension that deletes your news feed and replaces it with a nice quote
Tree Style Tab, Show tabs like a tree.
An awesome browser extension that reads aloud webpage content with one click
ClearURLs is an add-on based on the new WebExtensions technology and will automatically remove tracking elements from URLs to help protect your privacy.
Firefox/Chrome browser extension. SmartProxy will automatically enable/disable proxy for the sites you visit, based on customizable patterns.
The DownThemAll! WebExtension
Copying Link, Image and Tab(s) as Markdown Much Easier.
🧩 Plug-and-play, zero-config, cross-browser extension development tool.
📕 Barebones boilerplate with Parcel 2, options handler and auto-publishing
Save a web page/selection as an eBook (.epub format) - a Chrome/Firefox/Opera Web Extension
Fast, open and free-to-use new tab page for modern browsers
The innovative interception proxy
Firefox extension to save and restore tabs as bookmarks. Clear your tabs, clear your mind.
Kee adds free, secure and easy password management features to your browser which save time and keep your private data more secure.
A WebExtension that lets you fix sound problems in e.g. YouTube videos
🚤 📂 Quickly access the JIRA of your choice by typing the ticket id
Created by Browser Extension Community Group
Released May 7, 2015