Fat-Free Fox

(earlier known as Fat-Free Firefox) Safeguard your private information from leaking on the Internet. Block websites from secretly tracking and recording your online behavior. Keep your browser fat-free by disabling some of its unwanted features.

Fat-Free Fox documentation about WebRTC: "WebRTC Private IP Address Leak: Note that enabling this option will only block private IP address leak due to WebRTC. It will not disable WebRTC completely. [IceCat] Hello would still be usable as before."