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Tasks.org CalDAV Sync vs Tasks.org Server alt nono Calendarserver

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?
TA Tasks.org CalDAV Sync Open-source calendar and task sync client for Android VS TA Tasks.org Server alt nono Calendarserver Standards-compliant calendar and scheduling server
FeatureTasks.org CalDAV SyncTasks.org Server alt nono Calendarserver
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-3.0Apache-2.0
LanguageKotlinPython
Setup difficultyEasyHard
Min. RAM128 MB512 MB
Deploymentbinary, sourcebare-metal, source
GitHub stars★ 2,784★ 506
First released20132007
ReplacesGoogle Calendar Sync, iCloud syncGoogle Calendar, Exchange

Why pick each one

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

Choose Tasks.org Server alt nono Calendarserver if…

  • Released under the Apache-2.0 license
  • Written in Python
  • Lightweight — runs in 512 MB RAM
Tasks.org Server alt nono Calendarserver details

Frequently asked questions

Is Tasks.org CalDAV Sync or Tasks.org Server alt nono Calendarserver better?

Tasks.org CalDAV Sync is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Tasks.org Server alt nono Calendarserver if its specific feature set fits your needs better.

Are Tasks.org CalDAV Sync and Tasks.org Server alt nono Calendarserver free and open-source?

Yes. Tasks.org CalDAV Sync is licensed under GPL-3.0 and Tasks.org Server alt nono Calendarserver under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Tasks.org CalDAV Sync and Tasks.org Server alt nono Calendarserver with Docker?

Tasks.org CalDAV Sync: check the project docs for container support. Tasks.org Server alt nono Calendarserver: check the project docs for container support.

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