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
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Beautiful, responsive, highly customizable popup boxes
Captcha solver extension for humans
Translate your page in real time using Google or Yandex
Allows adding extensions from chrome web store on ungoogled-chromium
A Chrome plugin: Replace Google CDN with domestic
Skip YouTube video sponsors (browser extension)
The plugin-driven server agent for collecting and reporting metrics
Chromecast Web Sender SDK implementation for Firefox
Stylus - Userstyles Manager
jQuery Validation Plugin library sources
Cat scratch chrome resource sniffing extension
Consolidate and extend hosts files from several well-curated sources
A chrome extension for automating your browser by connecting blocks
Privacy Badger automatically learns to block invisible trackers
Browser extension that simplifies GitHub interface and adds features
In-browser Markdown editor
Flake8 plugin for Vim
Firefox with privacy enhancements
Automated auditing, performance metrics, & best practices for the web
Vlc web plugin based on FireBreath
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
Light and responsive lightbox script with focus on performance