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BaïkalDavis
Free

Free and open source under the GPL v3.

 Free

Free and open source under the MIT licence.

Self-hosted Web, Self-hosted
  • Runs on any basic PHP host
  • Web interface for users, calendars and address books
  • Web dashboard for users, calendars and address books
  • IMAP and LDAP authentication options
  • No built-in calendar or contacts web client for end users
  • Docker installation is only unofficial
  • 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
No account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked October 2, 2026

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