Prometheus vs Zabbix
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Prometheus
Metrics-based monitoring and alerting toolkit
VS
Zabbix
Enterprise-grade open-source monitoring solution
| Feature | Prometheus | Zabbix |
|---|---|---|
| Deploy effort | ≈5-minute setup | Under-an-hour setup |
| Health score | 100 · Excellent | 89 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | AGPL-3.0 |
| Language | Go | Go Template |
| Setup difficulty | Medium | Hard |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker, binary, helm | docker, bare-metal |
| GitHub stars | ★ 66,196 | ★ 6,411 |
| First released | 2015 | 2001 |
| Replaces | Datadog | Datadog, Nagios |
What are Prometheus and Zabbix?
Prometheus
Prometheus is a metrics-based monitoring system and time-series database with a powerful query language and alerting. It targets engineers monitoring cloud-native infrastructure. It is deployed via Docker, binaries, or Helm.
- Pull-based metrics collection
- PromQL query language
- Built-in alerting rules
- Cloud-native standard
Zabbix
Zabbix is an enterprise-class monitoring solution for networks, servers, cloud, and applications with deep alerting. It targets organizations needing comprehensive infrastructure monitoring. It is deployed via Docker or native packages.
- Agent and agentless monitoring
- Powerful triggers and alerting
- Network discovery and maps
- Highly scalable
Prometheus vs Zabbix: key differences
Prometheus is written in Go, while Zabbix is built with Go Template. Licensing differs — Apache-2.0 for Prometheus versus AGPL-3.0 for Zabbix. Prometheus is the lighter option, starting around 512 MB of RAM against 1,024 MB for Zabbix. Zabbix is the more established project (first released 2001), while Prometheus arrived in 2015. Prometheus has the considerably larger community, at 66,196 GitHub stars versus 6,411.
Why pick each one
Choose Prometheus if…
- Powerful query language
- Reliable and scalable
- Huge ecosystem
Watch out for
- No long-term storage by default
- Dashboards need Grafana
Choose Zabbix if…
- Comprehensive and mature
- Scales to large estates
- Fully free
Watch out for
- Steep learning curve
- Dated interface
Frequently asked questions
Is Prometheus or Zabbix better?
Prometheus is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Zabbix if its specific feature set fits your needs better.
Are Prometheus and Zabbix free and open-source?
Yes. Prometheus is licensed under Apache-2.0 and Zabbix under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Prometheus and Zabbix with Docker?
Prometheus: yes. Zabbix: yes.
Which is lighter on resources, Prometheus or Zabbix?
Prometheus has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for Zabbix. Real-world usage depends on library size, user count, and enabled features.