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Thorium vs Opera GX: catalog facts
Thorium	Opera GX
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free to download and use. The software is closed source.
Windows, macOS, Linux	Windows, macOS, Linux, Android, iOS
Offers builds tailored to several instruction sets and platforms.	The resource limiters cap how much CPU, memory and bandwidth the browser may take, which keeps it from…
You need to select a build compatible with your processor.	It is closed source, the styling is loud and hard to tone down, and it carries Opera's same…
Downloadable app	Downloadable app
Open source	Closed source
License: BSD-3-Clause	License not stated
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.