OpenSlides vs Xandikos
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?
OpenSlides
Presentation and assembly system for managing and projecting agenda,
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Xandikos
Git-backed CalDAV and CardDAV server
| Feature | OpenSlides | Xandikos |
|---|---|---|
| Category | Calendar & Contacts | Calendar & Contacts |
| License | MIT | GPL-3.0 |
| Language | Shell | Python |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 64 MB |
| Deployment | docker | docker, binary |
| GitHub stars | ★ 629 | ★ 593 |
| First released | 2026 | 2016 |
| Replaces | — | Google Calendar, iCloud |
Why pick each one
Choose OpenSlides if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Written in Shell
- Lightweight — runs in 512 MB RAM
Choose Xandikos if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Written in Python
- Tiny footprint — runs in 64 MB RAM
Frequently asked questions
Is OpenSlides or Xandikos better?
Neither is universally better. OpenSlides has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are OpenSlides and Xandikos free and open-source?
Yes. OpenSlides is licensed under MIT and Xandikos under GPL-3.0. Both can be self-hosted at no software cost.
Can I run OpenSlides and Xandikos with Docker?
OpenSlides: yes. Xandikos: yes.