Browse free open source Browser Extensions and Plugins and projects for Windows below. Use the toggles on the left to filter open source Browser Extensions and Plugins by OS, license, language, programming language, and project status.
uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox
Beautiful, responsive, highly customizable popup boxes
Captcha solver extension for humans
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
A chrome extension for automating your browser by connecting blocks
Scanner detecting the use of JavaScript libraries
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Translate your page in real time using Google or Yandex
Allows adding extensions from chrome web store on ungoogled-chromium
The plugin-driven server agent for collecting and reporting metrics
Chromecast Web Sender SDK implementation for Firefox
AdGuard browser extension
The Bitwarden browser extension vault
Core server and tier 1 (built-in) plugins
Skip YouTube video sponsors (browser extension)
Extension that allows you to intercept and edit HTTP/HTTPS requests
A datepicker for twitter bootstrap
}Unity Plugin for the Google Mobile Ads SDK
Stylus - Userstyles Manager
Japanese pop-up dictionary extension for Chrome and Firefox
A customizable, modular, responsive, lightbox gallery plugin
The DownThemAll! WebExtension
A plugin manager for Fish