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Supermium vs Catsxp: catalog facts
Supermium	Catsxp
Free Free to download from its GitHub repository.	Free Free to download from the official site.
Windows	Windows, macOS
Current Chromium engine on Windows XP through Windows 8.x Tracks recent Chromium versions	Continued support for Manifest V2 extensions Mouse gestures, super drag and boss key built in
Windows only Maintained by a small team, so security fixes may lag behind Chrome	Closed source Small developer with discussion mostly in Chinese
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 October 2, 2026

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