Privacy Badger automatically learns to block invisible trackers
A GNOME theme for Firefox
Firefox privacy, security and anti-tracking: a comprehensive user.js
DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome
Ghostery Browser Extension for Firefox, Chrome, Opera and Edge
Keep parts of your online life separated into color-coded tabs
uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox
Firefox with privacy enhancements