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Baïkal vs Xandikos: catalog facts
Baïkal	Xandikos
Free Free and open source under the GPL v3.	Free Free and open source under the GPL-3.0 licence.
Self-hosted	Linux, Self-hosted
Runs on any basic PHP host Web interface for users, calendars and address books	Git-backed storage with change history Broad, documented standards coverage
No built-in calendar or contacts web client for end users Docker installation is only unofficial	No built-in web interface for managing calendars WebDAV LOCK operations not implemented
Self-hosted	Self-hosted
Open source	Open source
License: GPL-3.0	License: GPL-3.0
No account 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 September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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