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Basilisk vs Pale Moon: catalog facts
Basilisk	Pale Moon
Free The open-source application is available without a license fee.	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux	Windows, macOS, Linux
Runs classic XUL extensions that no current browser supports Independent of Chromium and of current Firefox	It keeps the pre-Quantum Gecko engine and the old XUL extension model, so add-ons that Firefox dropped still…
Small development team, so security fixes and web compatibility lag Many modern sites do not work correctly	The source is MPL but the official binaries carry a separate branding licence, and its older engine misses…
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.