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Horde Kronolith

Calendar application from the Horde groupware suite

Calendar & Contacts ★ 10 stars Hard setup GPL-2.0

Kronolith is the calendar component of the Horde groupware framework. It provides shared calendars, event management, and supports CalDAV synchronization with desktop and mobile clients.

Official siteSource code

Key features

  • Part of Horde groupware
  • Shared calendar support
  • CalDAV synchronization

Strengths

  • Released under the GPL-2.0 license
  • Written in PHP
  • Tiny footprint — runs in 256 MB RAM

Is Horde Kronolith secure?

No known vulnerabilities affect Horde Kronolith's latest release (v5.0.3). OSV.dev lists 2 past advisories for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2017-16906, published 2017-11-20 (3250 days ago)

Source: OSV.dev, checked 2026-10-14. How this is measured.

Horde Kronolith replaces

Self-hosted Google Calendar alternativesSelf-hosted Exchange alternatives

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SelfHostIndex: 75 · good

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Compare Horde Kronolith

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