Browse free open source JavaScript Browser Extensions and Plugins and projects below. Use the toggles on the left to filter open source JavaScript Browser Extensions and Plugins by OS, license, language, programming language, and project status.
Beautiful, responsive, highly customizable popup boxes
A chrome extension for automating your browser by connecting blocks
The Bitwarden browser extension vault
AdGuard browser extension
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
Translate your page in real time using Google or Yandex
Allows adding extensions from chrome web store on ungoogled-chromium
Captcha solver extension for humans
Cat scratch chrome resource sniffing extension
jQuery Validation Plugin library sources
Google Unlocked browser extension uncensor google search results
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
A simple & straight-to-the-point PHP profiling extension
Web Extension for Firefox/Chrome/MS Edge and CLI tool
The jQuery plugin that brings select elements into the 21st century
uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox
Keep parts of your online life separated into color-coded tabs
A web extension for Pixiv
Web Extension for Firefox/MS Edge and CLI tool
Japanese pop-up dictionary extension for Chrome and Firefox
Modular smart mirror platform with a list of installable modules
Chrome extension to return youtube dislikes
Browser extension for viewing archived and cached versions of websites
Firefox privacy, security and anti-tracking: a comprehensive user.js