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Xandikos vs Nextcloud Calendar: catalog facts
Xandikos	Nextcloud Calendar
Free Free and open source under the GPL-3.0 licence.	Free Free app for Nextcloud servers.
Linux, Self-hosted	Web, Self-hosted
Git-backed storage with change history Broad, documented standards coverage	Calendars stay on your own server CalDAV sync with standard clients
No built-in web interface for managing calendars WebDAV LOCK operations not implemented	Requires a running Nextcloud server Not a standalone app
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	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 October 2, 2026

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