SHSelfHostIndex

Open Event Server 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?
OP Open Event Server Self-hosted event management and ticketing backend VS TA Tasks.org CalDAV Sync Open-source calendar and task sync client for Android
FeatureOpen Event ServerTasks.org CalDAV Sync
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-3.0GPL-3.0
LanguagePythonKotlin
Setup difficultyHardEasy
Min. RAM1,024 MB128 MB
Deploymentdocker, sourcebinary, source
GitHub stars★ 3,006★ 2,784
First released20162013
ReplacesEventbrite, SchedGoogle Calendar Sync, iCloud sync

Why pick each one

Choose Open Event Server if…

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Active community (3k GitHub stars)
  • Written in Python
Open Event Server 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 Open Event Server or Tasks.org CalDAV Sync better?

Neither is universally better. Open Event Server has the larger community, while Tasks.org CalDAV Sync is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.

Are Open Event Server and Tasks.org CalDAV Sync free and open-source?

Yes. Open Event Server 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 Open Event Server and Tasks.org CalDAV Sync with Docker?

Open Event Server: yes. Tasks.org CalDAV Sync: check the project docs for container support.

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