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Thorium vs Helium: catalog facts
Thorium	Helium
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source, supported by sponsors.
Windows, macOS, Linux	Windows, macOS, Linux
Offers builds tailored to several instruction sets and platforms.	Ad, tracker and cookie banner blocking on by default No telemetry or background requests without consent
You need to select a build compatible with your processor.	Younger project than established privacy browsers Built on Chromium, so it follows Google's engine decisions
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0
Not stated if an account is needed	No account 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 23, 2026

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