A distinct browser with Firefox roots

Basilisk is an independently developed browser built on the Unified XUL Platform (UXP). UXP began as a fork of the Firefox 52 engine and has since evolved into a separate development platform for XUL-based applications, including browsers. Basilisk follows its own development direction rather than tracking current Firefox releases.

Key features

• A traditional desktop interface with extensive customization.
• XUL and overlay-based extensions, plus NPAPI plugin support.
• Web standards and compatibility updates while preserving established workflows.

Explore Basilisk's features.

System requirements

Basilisk is a full-featured desktop web browser and requires a reasonably modern system to run reliably and with good performance.

Windows requirements

• Windows 7 or later.
• 1 GB of RAM (2 GB or more recommended for heavier use).
• Dedicated GPU strongly recommended.

macOS requirements

• OS X 10.6 or later for Intel 32-bit builds; OS X 10.7 or later for Intel 64-bit builds.
• OS X 10.5 Leopard on PowerPC systems.
• All macOS releases are supported on Apple Silicon systems.
• 1 GB of RAM (2 GB or more recommended for heavier use).
• A GPU supported by the host version of macOS. Hardware-accelerated graphics are recommended for best performance.

Linux requirements

• A reasonably modern Linux distribution with a contemporary userland.
  Release builds for x86_64, i686, and aarch64 are compiled on Oracle Linux 8 (RHEL 8 compatible).
  LoongArch64 builds are built on Loongnix Server 23.
  Distributions with comparable library versions are recommended.
• 1 GB of RAM (2 GB or more recommended for heavier use).
• Dedicated GPU and hardware-accelerated video under X strongly recommended.
• GTK 2.24 or GTK 3.22+ (GTK 4 is not supported).
• GLib and Pango versions compatible with GTK 3.22.
• X.Org with hardware acceleration support.
• libstdc++ provided by a modern system toolchain.

Release notes

See what changed in the latest release.