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.
Bitwarden client apps (web, browser extension, desktop, and cli).
🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search modes, page translations, new word notebook and PDF selection searching.
☁️ Sync your bookmarks privately across browsers and devices
Blocks specific sites from appearing in Google search results
A Vim-like interface for Firefox, inspired by Vimperator/Pentadactyl.
ScriptCat, a browser extension that can execute userscript; 脚本猫，一个可以执行用户脚本的浏览器扩展
The cross-browser extension framework.
Authenticator generates 2-Step Verification codes in your browser.
YouTube / Video Browser-Extension. [Top1 FOSS.] Enrich your experience & choice! 🧰Smart features📌set & forget📌300+ tweaks. Longest-standing. Join🧩us?👨👩👧👧 ⋮ {playback|discovery|extra player buttons|quality|codec|full tab|full screen|no distraction|shorts}
A keyboard shortcut browser extension for keyboard-based navigation and tab operations with an advanced omnibar
A browser extension that redirects popular sites to alternative privacy friendly frontends
Privacy Badger is a browser extension that automatically learns to block hidden trackers
A command line tool to help build, run, and test web extensions
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
Open Source record and playback test automation for the web.
Scrobble music all around the web!
A beautiful, customisable New Tab page for Firefox, Chrome, and Edge.
Firefox/Chrome browser extension. SmartProxy will automatically enable/disable proxy for the sites you visit, based on customizable patterns.
Created by Browser Extension Community Group
Released May 7, 2015