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Tasks.org Server alt nono Calendarserver vs vdirsyncer

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 Server alt nono Calendarserver Standards-compliant calendar and scheduling server VS VD vdirsyncer Synchronize calendars and contacts via CalDAV/CardDAV
FeatureTasks.org Server alt nono Calendarservervdirsyncer
CategoryCalendar & ContactsCalendar & Contacts
LicenseApache-2.0BSD-3-Clause
LanguagePythonPython
Setup difficultyHardMedium
Min. RAM512 MB64 MB
Deploymentbare-metal, sourcebinary, source
GitHub stars★ 506★ 1,859
First released20072014
ReplacesGoogle Calendar, ExchangeiCloud sync

Why pick each one

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

Choose vdirsyncer if…

  • Released under the BSD-3-Clause license
  • Active community (1.9k GitHub stars)
  • Written in Python
  • Tiny footprint — runs in 64 MB RAM
vdirsyncer details

Frequently asked questions

Is Tasks.org Server alt nono Calendarserver or vdirsyncer better?

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

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

Yes. Tasks.org Server alt nono Calendarserver is licensed under Apache-2.0 and vdirsyncer under BSD-3-Clause. Both can be self-hosted at no software cost.

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

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

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