GNOME Calendar vs Horde Kronolith

A side-by-side comparison of two self-hosted calendar & contacts options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureGNOME CalendarHorde Kronolith
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-3.0GPL-2.0
LanguageCPHP
Setup difficultyEasyHard
Min. RAM256 MB256 MB
Deploymentbinary, sourcebare-metal
GitHub stars★ 300★ 10
First released20152003
ReplacesGoogle CalendarGoogle Calendar, Exchange

Why pick each one

Choose GNOME Calendar if…

  • Released under the GPL-3.0 license
  • Easy to set up — beginner-friendly
  • Written in C
  • Tiny footprint — runs in 256 MB RAM
GNOME Calendar details

Choose Horde Kronolith if…

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

Frequently asked questions

Is GNOME Calendar or Horde Kronolith better?

GNOME Calendar is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Horde Kronolith if its specific feature set fits your needs better.

Are GNOME Calendar and Horde Kronolith free and open-source?

Yes. GNOME Calendar is licensed under GPL-3.0 and Horde Kronolith under GPL-2.0. Both can be self-hosted at no software cost.

Can I run GNOME Calendar and Horde Kronolith with Docker?

GNOME Calendar: check the project docs for container support. Horde Kronolith: check the project docs for container support.

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