SHSelfHostIndex

DavMail 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?
DA DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to VS DE Decsync Calendar Sync File-based calendar and contacts synchronization
FeatureDavMailDecsync Calendar Sync
CategoryCalendar & ContactsCalendar & Contacts
LicenseGPL-2.0GPL-3.0
LanguageJavaKotlin
Setup difficultyMediumMedium
Min. RAM512 MB128 MB
Deploymentbare-metalsource, binary
GitHub stars★ 751★ 696
First released20202018
Replaces—Google Calendar

Why pick each one

Choose DavMail if…

  • Released under the GPL-2.0 license
  • Written in Java
  • Lightweight — runs in 512 MB RAM
DavMail details

Choose Decsync Calendar Sync if…

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

Frequently asked questions

Is DavMail or Decsync Calendar Sync better?

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

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

Yes. DavMail is licensed under GPL-2.0 and Decsync Calendar Sync under GPL-3.0. Both can be self-hosted at no software cost.

Can I run DavMail and Decsync Calendar Sync with Docker?

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

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