Compare software

RadicaleDavis
Free

Free to run on your own server.

 Free

Free and open source under the MIT licence.

Self-hosted Web, Self-hosted
  • Standard CalDAV and CardDAV support
  • Small and light enough for modest hardware
  • Web dashboard for users, calendars and address books
  • IMAP and LDAP authentication options
  • You set up and maintain the server yourself
  • Only handles calendars and contacts, not mail or files
  • Requires PHP 8.2 or later and a database
  • Single main maintainer
Self-hosted Self-hosted
Open source Open source
License not stated 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

Checked September 24, 2026

Checked October 2, 2026

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