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Supermium vs Thorium: catalog facts
Supermium	Thorium
Free Free to download from its GitHub repository.	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows	Windows, macOS, Linux
Current Chromium engine on Windows XP through Windows 8.x Tracks recent Chromium versions	Offers builds tailored to several instruction sets and platforms.
Windows only Maintained by a small team, so security fixes may lag behind Chrome	You need to select a build compatible with your processor.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: BSD-3-Clause
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 September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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