Notes 
A modified version of Firefox designed to increase protection against tracking and fingerprinting techniques, while also including security improvements.
Reviewed by Marco Wollank
Threat level
Covered
A covered pick. Anyone can use it as a private drop-in, with no setup or know-how. Enough for most people. Threat levels
Our take
Firefox with the privacy and anti-fingerprinting work already done for you, which spares you a manual hardening checklist. The trade is on the convenience side: it strips telemetry and pocket-style extras and breaks some sites that expect default Firefox behavior, and updates lag upstream slightly. Ideal for someone who wants a hardened Firefox without fiddling; if you need everything to just work, plain Firefox with a couple of add-ons is gentler.
Website at a glance
librewolf.net
C score 50
Basic website security headers
Graded by Mozilla HTTP Observatory, tested 1d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
LibreWolf alternatives
Brave Fast, cross-platform Chromium browser that blocks ads and trackers by default. A complete package out of the box, suitable for beginners or when setup time matters.
Helium Privacy-first Chromium browser with uBlock Origin and tracker blocking on by default. Based on ungoogled-chromium, for Windows, macOS, and Linux.
Firefox Reliable, fast and privacy-friendly. Harden it with add-ons, enable DNS-over-HTTPS, and sync across all your devices.
Firefox Focus Dedicated mobile privacy browser with automatic tracking protection and ad blocking. With Focus, your pages load faster and your data stays private.
DuckDuckGo Privacy-focused search engine and mobile browser that blocks trackers and searches without profiling you. Partially open source, based in the US.
Orion WebKit browser by Kagi for macOS and iOS with zero telemetry and support for Chrome and Firefox extensions.