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Caja vs Peony: catalog facts
Caja	Peony
Free Free and open source, developed by the MATE project.	Free Free and open source.
Linux	Linux
Default, well-integrated file manager for MATE Extension interface for adding features	Integrated with the UKUI desktop Plugin interface for extensions
Linux only Best integrated with the MATE desktop rather than other environments	Designed mainly for UKUI rather than other desktops Some documentation is in Chinese only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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