Compare software

SOGoNextcloud Calendar
Free

Free and open source; paid premium support is offered separately.

 Free

Free app for Nextcloud servers.

Web, Self-hosted Web, Self-hosted
  • Webmail, calendars and contacts in one self-hosted server
  • CalDAV, CardDAV and ActiveSync support for native and mobile clients
  • Calendars stay on your own server
  • CalDAV sync with standard clients
  • Needs existing mail and directory servers to integrate with
  • Outlook support depends on a separate CalDAV synchronizer
  • Requires a running Nextcloud server
  • Not a standalone app
Self-hosted Self-hosted
Open source Open source
License: GPL-2.0-or-later / LGPL-2.0-or-later License not stated
Not stated if an account is needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 2, 2026

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