Horde Groupware 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?
Horde Groupware
PHP groupware suite with webmail and calendaring
VS
ZenTao
Open-source project and team collaboration platform
| Feature | Horde Groupware | ZenTao |
|---|---|---|
| Category | Groupware | Groupware |
| License | GPL-2.0 | AGPL-3.0 |
| Language | PHP | PHP |
| Setup difficulty | Hard | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | bare-metal, source | docker, bare-metal |
| GitHub stars | ★ 243 | ★ 1,665 |
| First released | 2003 | 2009 |
| Replaces | Microsoft Exchange | Jira, Confluence |
Why pick each one
Choose Horde Groupware if…
- Released under the GPL-2.0 license
- Written in PHP
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Horde Groupware or ZenTao better?
ZenTao is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Horde Groupware if its specific feature set fits your needs better.
Are Horde Groupware and ZenTao free and open-source?
Yes. Horde Groupware is licensed under GPL-2.0 and ZenTao under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Horde Groupware and ZenTao with Docker?
Horde Groupware: check the project docs for container support. ZenTao: yes.