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Catsxp vs Supermium: catalog facts
Catsxp	Supermium
Free Free to download from the official site.	Free Free to download from its GitHub repository.
Windows, macOS	Windows
Continued support for Manifest V2 extensions Mouse gestures, super drag and boss key built in	Current Chromium engine on Windows XP through Windows 8.x Tracks recent Chromium versions
Closed source Small developer with discussion mostly in Chinese	Windows only Maintained by a small team, so security fixes may lag behind Chrome
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
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 October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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