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PluXml vs FlatPress: catalog facts
PluXml	FlatPress
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-2.0 licence.
Self-hosted	Self-hosted
No database required; a site is a folder of XML files Multi-user with five permission levels	No database; backups are a file copy Plugin system with widgets and Smarty themes
Website and community are mainly in French Small project with a modest plugin and theme selection	Aimed at blogs rather than larger structured websites Smaller theme and plugin choice than major CMSs
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: GPL-2.0
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 October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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