LibreWolf is a free and open source web browser for Linux, MacOS and Windows. It is a fork of popular browser firefox and released under the Mozilla Public License 2.0. It is always built from the latest Firefox stable source and the main focus of this browser is privacy, security and freedom. It does not send any Telemetry data like experiments, adware, annoyances, or unnecessary distractions. It comes with privacy focused search engines like DuckDuckGo, Searx and Qwant. It also comes with build-in ad blocker uBlock Origin installed and Extension firewall.