Open Event Server vs ETAR
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?
Open Event Server
Self-hosted event management and ticketing backend
VS
ETAR
Open-source calendar server companion for events
| Feature | Open Event Server | ETAR |
|---|---|---|
| Category | Calendar & Contacts | Calendar & Contacts |
| License | GPL-3.0 | GPL-3.0 |
| Language | Python | Java |
| Setup difficulty | Hard | Medium |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | docker, source | docker, source |
| GitHub stars | ★ 3,006 | ★ 2,565 |
| First released | 2016 | 2016 |
| Replaces | Eventbrite, Sched | Google Calendar |
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
Frequently asked questions
Is Open Event Server or ETAR better?
Neither is universally better. Open Event Server has the larger community, while ETAR is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Open Event Server and ETAR free and open-source?
Yes. Open Event Server is licensed under GPL-3.0 and ETAR under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Open Event Server and ETAR with Docker?
Open Event Server: yes. ETAR: yes.