Basilisk is a free and Open Source XUL-based web browser, featuring the well-known Firefox-style interface and operation. It is based on the Goanna layout and rendering engine (a fork of Gecko) and builds on the Unified XUL Platform (UXP), which in turn is a fork of the Mozilla code base without Servo or Rust.


  • Full support for JavaScript's ECMAscript 6 standard for modern web browsing
  • Support for all NPAPI plugins
  • Support for XUL/Overlay Mozilla-style extensions
  • Experimental support for WebExtensions
  • Support for ALSA on Linux
  • Support for WebAssembly
  • Support for advanced Graphite font shaping features
  • Support for modern web cryptography
LicenseFree and Open Source
Supported Platforms,

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