Waterfox
Firefox build optimised for privacy while maintaining usability - updates can be a few weeks behind Firefox
Features
Non-Google Engine
Isn't impacted by Google's decisions e.g. dropping support for ad-blocking extensions
Zero Telemetry
Limited or no telemetry (tracking or analytical data) is reported back to the company
Platforms
Windows
Compatible with Windows operating systems
Mac OS
Compatible with macOS computers
Linux
Compatible with Linux operating systems
Android
Accessible through any web browser