hitobito 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?
hitobito
Manage complex group hierarchies with members, events and a lot more
VS
Decsync Calendar Sync
File-based calendar and contacts synchronization
| Feature | hitobito | Decsync Calendar Sync |
|---|---|---|
| Category | Calendar & Contacts | Calendar & Contacts |
| License | AGPL-3.0 | GPL-3.0 |
| Language | Ruby | Kotlin |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 128 MB |
| Deployment | bare-metal | source, binary |
| GitHub stars | ★ 475 | ★ 696 |
| First released | 2026 | 2018 |
| Replaces | — | Google Calendar |
Why pick each one
Choose hitobito if…
- Released under the AGPL-3.0 license
- Written in Ruby
- Lightweight — runs in 512 MB RAM
Choose Decsync Calendar Sync if…
- Server-free architecture
- Privacy friendly
Frequently asked questions
Is hitobito or Decsync Calendar Sync better?
Neither is universally better. Decsync Calendar Sync has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are hitobito and Decsync Calendar Sync free and open-source?
Yes. hitobito 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 hitobito and Decsync Calendar Sync with Docker?
hitobito: check the project docs for container support. Decsync Calendar Sync: check the project docs for container support.
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