GNOME Calendar vs Tasks.org CalDAV Sync

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 CalendarTasks.org CalDAV Sync
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-3.0GPL-3.0
LanguageCKotlin
Setup difficultyEasyEasy
Min. RAM256 MB128 MB
Deploymentbinary, sourcebinary, source
GitHub stars★ 300★ 2,784
First released20152013
ReplacesGoogle CalendarGoogle Calendar Sync, iCloud sync

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 Tasks.org CalDAV Sync if…

  • Released under the GPL-3.0 license
  • Easy to set up — beginner-friendly
  • Active community (2.8k GitHub stars)
  • Written in Kotlin
Tasks.org CalDAV Sync details

Frequently asked questions

Is GNOME Calendar or Tasks.org CalDAV Sync better?

Neither is universally better. Tasks.org CalDAV Sync has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.

Are GNOME Calendar and Tasks.org CalDAV Sync free and open-source?

Yes. GNOME Calendar is licensed under GPL-3.0 and Tasks.org CalDAV Sync under GPL-3.0. Both can be self-hosted at no software cost.

Can I run GNOME Calendar and Tasks.org CalDAV Sync with Docker?

GNOME Calendar: check the project docs for container support. Tasks.org CalDAV Sync: check the project docs for container support.

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