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.
Extension that allows you to intercept and edit HTTP/HTTPS requests
Beautiful, responsive, highly customizable popup boxes
Chromecast Web Sender SDK implementation for Firefox
Captcha solver extension for humans
Core server and tier 1 (built-in) plugins
The Bitwarden browser extension vault
AdGuard browser extension
Allows adding extensions from chrome web store on ungoogled-chromium
A chrome extension for automating your browser by connecting blocks
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Stylus - Userstyles Manager
Web Extension for Firefox/Chrome/MS Edge and CLI tool
jQuery Validation Plugin library sources
Vlc web plugin based on FireBreath
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
Plugin that shows a diff explaining what a helm upgrade would change
Scanner detecting the use of JavaScript libraries
Translate your page in real time using Google or Yandex
Japanese pop-up dictionary extension for Chrome and Firefox
A portable modern multi-threading download manager for all platforms
Firefox with privacy enhancements
A datepicker for twitter bootstrap
Cat scratch chrome resource sniffing extension