Cozy Contacts 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?
Cozy Contacts
Contacts management app for the Cozy personal server
VS
Kopano Groupware Core
Open-source collaboration platform with Outlook support
| Feature | Cozy Contacts | Kopano Groupware Core |
|---|---|---|
| Category | Groupware | Groupware |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | JavaScript | C++ |
| Setup difficulty | Medium | Hard |
| Min. RAM | 256 MB | 2,048 MB |
| Deployment | source | docker, bare-metal |
| GitHub stars | ★ 11 | ★ 60 |
| First released | 2018 | 2016 |
| Replaces | Google Contacts | Microsoft Exchange |
Why pick each one
Choose Cozy Contacts if…
- Released under the AGPL-3.0 license
- Written in JavaScript
- 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 Cozy Contacts or Kopano Groupware Core better?
Neither is universally better. Kopano Groupware Core has the larger community, while Cozy Contacts is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Cozy Contacts and Kopano Groupware Core free and open-source?
Yes. Cozy Contacts is licensed under AGPL-3.0 and Kopano Groupware Core under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Cozy Contacts and Kopano Groupware Core with Docker?
Cozy Contacts: check the project docs for container support. Kopano Groupware Core: yes.