DAViCal vs Kopano Groupware Core
A side-by-side comparison of two self-hosted groupware options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
DAViCal
Server for sharing calendars and address books via DAV
VS
Kopano Groupware Core
Open-source collaboration platform with Outlook support
| Feature | DAViCal | Kopano Groupware Core |
|---|---|---|
| Category | Groupware | Groupware |
| License | GPL-2.0 | AGPL-3.0 |
| Language | PHP | C++ |
| Setup difficulty | Medium | Hard |
| Min. RAM | 256 MB | 2,048 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal |
| GitHub stars | ★ 200 | ★ 60 |
| First released | 2007 | 2016 |
| Replaces | Google Calendar, Microsoft Exchange | Microsoft Exchange |
Why pick each one
Choose DAViCal if…
- Released under the GPL-2.0 license
- First-class Docker support for quick deployment
- Written in PHP
- Tiny footprint — runs in 256 MB RAM
Choose Kopano Groupware Core if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in C++
Frequently asked questions
Is DAViCal or Kopano Groupware Core better?
DAViCal is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Kopano Groupware Core if its specific feature set fits your needs better.
Are DAViCal and Kopano Groupware Core free and open-source?
Yes. DAViCal is licensed under GPL-2.0 and Kopano Groupware Core under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run DAViCal and Kopano Groupware Core with Docker?
DAViCal: yes. Kopano Groupware Core: yes.