Umbra Browser – Privacy-focused Firefox ESR fork without telemetry

Summary: Umbra is a Firefox ESR fork that disables all telemetry and prevents data from being sent externally. It includes a control center with three privacy tiers, a WASM sandbox, and supports Netflix playback.

What it does

Umbra blocks all telemetry and external data transmission while providing adjustable privacy settings and sandboxing for WebAssembly. It maintains compatibility with services like Netflix.

Who it's for

Users seeking a privacy-focused browser that does not compromise web functionality or block popular streaming services.

Why it matters

It solves the trade-off between privacy and usability by offering strong privacy controls without impairing the browsing experience.