Self-Hosted Index

Alternatives

Apple Calendar

Calendar sync through iCloud, with sharing that assumes everyone is on Apple hardware.

4 self-hosted replacements in this index, ranked by GitHub stars in the dataset.

Replacements

  • Nextcloud

    Access and share your files, calendars, contacts, mail and more from any device, on your terms.

    37,369 stars Active

    31 Oct 2026 v35.0.2

  • Radicale

    Simple calendar and contact server with extremely low administrative overhead.

    5,165 stars Active

    31 Oct 2026 v3.9.0

  • SOGo

    SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface.

    2,182 stars Active

    27 Oct 2026 SOGo-5.12.12

  • DAViCal

    Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store.

    112 stars Active

    27 May 2026