This is typically caused by older desktop environments or MIME detection rules misidentifying the Basilisk binary as a shared library.

You can work around this by launching Basilisk from a terminal, creating a wrapper shell script, or installing a proper .desktop file.

Additional discussion can be found in this forum thread.

You may compile Basilisk with official branding for personal use. Do not expect support for self-compiled builds from the Basilisk Development Team.

Linux or BSD distribution package maintainers who wish to distribute Basilisk with official branding may do so, provided the build closely follows the official mozconfig files and includes the --disable-updater option to ensure updates are managed by the distribution’s package manager.

Official release binaries are provided for:

• Windows (32-bit and 64-bit)
• Linux (x86_64 and aarch64)
• macOS (Intel and Apple Silicon)
• FreeBSD (x86_64)

Linux builds support both GTK2 and GTK3. macOS builds support all Apple Silicon releases and macOS 10.7 or newer on Intel systems.

Community members may also provide builds for additional platforms.

No. Basilisk does not support WebExtensions.

Basilisk instead supports XUL and overlay-based extensions, which allow deeper integration and customization than the WebExtensions model.

Available extensions can be found on the Basilisk Add-ons site.

Yes. Basilisk supports language packs, but currently only English is officially maintained. Community contributions for additional languages are welcome.

No. These operating systems are no longer supported and should not be used for general web browsing.

For users who require support on older Windows versions, a third-party fork called Serpent, maintained by roytam1, may be suitable: MSFN thread.

Please note that Serpent is not Basilisk, and issues specific to Serpent should not be reported to the Basilisk development team.

User support is provided through the Basilisk section of the Pale Moon forums.

No. Basilisk uses a single-process architecture by design.

This decision prioritizes stability, extensibility, and compatibility with existing technologies supported by the Unified XUL Platform.

Donations are currently accepted via Monero (XMR). The donation address is listed in the footer of the website.

The GTK version in use is shown under Help → About Basilisk.

Basilisk is developed and maintained by the Basilisk Development Team, an independent group of contributors.

Basilisk is typically released monthly, with additional releases issued as needed for security updates or critical fixes.

There is no fixed release day, as releases are driven by readiness rather than a strict calendar.