Browse free open source Browser Extensions and Plugins and projects for Mac below. Use the toggles on the left to filter open source Browser Extensions and Plugins by OS, license, language, programming language, and project status.
AdGuard browser extension
A universal Sims 4 DLC Unlocker
Cat scratch chrome resource sniffing extension
Beautiful, responsive, highly customizable popup boxes
Skip YouTube video sponsors (browser extension)
Chromecast Web Sender SDK implementation for Firefox
Captcha solver extension for humans
Allows adding extensions from chrome web store on ungoogled-chromium
A tool to install, manage and use Progressive Web Apps (PWAs)
A chrome extension for automating your browser by connecting blocks
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
The Universal Plug-in System. Extend anything with WebAssembly
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Translate your page in real time using Google or Yandex
jQuery Validation Plugin library sources
Web Extension for saving a copy of complete web page in a single file
Offline, privacy-first grammar checker
Automated auditing, performance metrics, & best practices for the web
Scanner detecting the use of JavaScript libraries
uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox
Extension that allows you to intercept and edit HTTP/HTTPS requests
A customizable, modular, responsive, lightbox gallery plugin
The plugin-driven server agent for collecting and reporting metrics
Vlc web plugin based on FireBreath