calcurse 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.

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FeaturecalcurseTasks.org CalDAV Sync
CategoryCalendar & ContactsCalendar & Contacts
LicenseBSD-2-ClauseGPL-3.0
LanguageCKotlin
Setup difficultyEasyEasy
Min. RAM16 MB128 MB
Deploymentbinary, sourcebinary, source
GitHub stars★ 1,301★ 2,784
First released20042013
ReplacesGoogle CalendarGoogle Calendar Sync, iCloud sync

Why pick each one

Choose calcurse if…

  • Released under the BSD-2-Clause license
  • Easy to set up — beginner-friendly
  • Active community (1.3k GitHub stars)
  • Written in C
calcurse 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 calcurse 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 calcurse and Tasks.org CalDAV Sync free and open-source?

Yes. calcurse is licensed under BSD-2-Clause and Tasks.org CalDAV Sync under GPL-3.0. Both can be self-hosted at no software cost.

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

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

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