SHSelfHostIndex

EteSync vs Decsync Calendar 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?
ET EteSync End-to-end encrypted sync for contacts and calendars VS DE Decsync Calendar Sync File-based calendar and contacts synchronization
FeatureEteSyncDecsync Calendar Sync
CategoryCalendar & ContactsCalendar & Contacts
LicenseAGPL-3.0GPL-3.0
LanguagePythonKotlin
Setup difficultyMediumMedium
Min. RAM256 MB128 MB
Deploymentdocker, bare-metalsource, binary
GitHub stars★ 1,765★ 696
First released20172018
ReplacesGoogle Calendar, iCloudGoogle Calendar

Why pick each one

Choose EteSync if…

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Active community (1.8k GitHub stars)
  • Written in Python
EteSync details

Choose Decsync Calendar Sync if…

  • Server-free architecture
  • Privacy friendly
Decsync Calendar Sync details

Frequently asked questions

Is EteSync or Decsync Calendar Sync better?

Neither is universally better. EteSync has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are EteSync and Decsync Calendar Sync free and open-source?

Yes. EteSync is licensed under AGPL-3.0 and Decsync Calendar Sync under GPL-3.0. Both can be self-hosted at no software cost.

Can I run EteSync and Decsync Calendar Sync with Docker?

EteSync: yes. Decsync Calendar Sync: check the project docs for container support.

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