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Arctic Fox vs Pale Moon: catalog facts
Arctic Fox	Pale Moon
Free Free, with the source code published on GitHub.	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux	Windows, macOS, Linux
Runs on old systems such as Mac OS X 10.6, Windows XP and PowerPC Linux Backports security fixes from Firefox and TenFourFox	It keeps the pre-Quantum Gecko engine and the old XUL extension model, so add-ons that Firefox dropped still…
Based on an old Pale Moon engine, so modern sites may not render well Often has to be built from source on less common platforms	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 not stated	License: MPL-2.0
No account 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 October 2, 2026	Official website Full listing and sources Checked September 22, 2026

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