Kontact vs ZenTao
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?
Kontact
Integrated personal information manager for KDE
VS
ZenTao
Open-source project and team collaboration platform
| Feature | Kontact | ZenTao |
|---|---|---|
| Category | Groupware | Groupware |
| License | GPL-2.0 | AGPL-3.0 |
| Language | C++ | PHP |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | binary, source | docker, bare-metal |
| GitHub stars | ★ 200 | ★ 1,665 |
| First released | 2004 | 2009 |
| Replaces | Microsoft Outlook | Jira, Confluence |
Why pick each one
Choose Kontact if…
- Released under the GPL-2.0 license
- Written in C++
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Kontact or ZenTao better?
Neither is universally better. ZenTao has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Kontact and ZenTao free and open-source?
Yes. Kontact is licensed under GPL-2.0 and ZenTao under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Kontact and ZenTao with Docker?
Kontact: check the project docs for container support. ZenTao: yes.