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Xandikos vs Davis: catalog facts
Xandikos	Davis
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the MIT licence.
Linux, Self-hosted	Web, Self-hosted
Git-backed storage with change history Broad, documented standards coverage	Web dashboard for users, calendars and address books IMAP and LDAP authentication options
No built-in web interface for managing calendars WebDAV LOCK operations not implemented	Requires PHP 8.2 or later and a database Single main maintainer
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: MIT
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.