Basilisk 2025.10.10

Basilisk: A Privacy-Focused, Open-Source Browser Built on the Mozilla Platform

Basilisk is an actively developed open-source web browser that preserves the classic Mozilla/Gecko experience while adding modern builds, privacy controls, and cross-platform support. Maintained by the Basilisk Development Team and related projects, Basilisk targets users who want a customizable, independent browser that remains compatible with a wide range of web technologies.

Downloads and Platform Support

Basilisk offers official release builds and alternative architecture packages for desktop platforms. Stable installers and archived packages are published for Windows (32-bit and 64-bit), Linux (x86 and ARM builds with GTK2/GTK3 variants), and macOS (Intel and Apple Silicon). Beta and community builds include FreeBSD support. SHA256 checksums and source archives are provided for verification and reproducible builds.

Privacy, Security, and Update Policy

Basilisk emphasizes user privacy with built-in tracking protections and options to harden fingerprinting and telemetry. The project publishes timely security fixes and provides source code access so power users and auditors can inspect updates. Users should note that downloading Basilisk implies agreement with the projects redistribution and branding terms, and that official checksums are available to verify downloads.

Customization, Extensions, and Legacy Add-on Support

Basilisk preserves deep customization through a traditional preference system, classic theme support, and compatibility with many legacy XUL-style extensions. The browser appeals to users who prefer granular control over the UI and behavior, with a mix of modern and legacy extension options for personalization and productivity.

Performance and Web Compatibility

Engineered for responsive browsing, Basilisk offers fast page loading and smooth tab handling on typical desktop hardware. The browser supports a broad set of web standards and multimedia features, reducing compatibility issues across common sites and web applications while retaining the feel of a traditional Gecko-based browser.

Source Code, Repositories, and Archives

The Basilisk source repository is publicly accessible, and compressed source archives for the latest releases are made available for download. Historical builds and previous-version archives are hosted on dedicated archive servers for users who need older releases or reproducible source snapshots.

Who Should Consider Basilisk

• Privacy-conscious users who want strong tracking protections in a desktop browser.
• Power users and tinkerers who value deep customization and legacy extension support.
• Developers and auditors who need open source access and reproducible builds across multiple architectures.