Zabbix vs Netdata
Both are free/open-source alternatives to Datadog. Here's how they stack up — verified facts, no spin.
Zabbix
Mature, enterprise-grade open-source monitoring you fully own.
Zabbix has been an open-source monitoring workhorse since 2001, covering infrastructure, network, server, application, and cloud monitoring with alerting, dashboards, and auto-discovery built in. It is a single self-hosted platform rather than an assembled stack, which makes it a strong Datadog alternative for teams that want broad coverage and mature alerting without per-host SaaS billing.
Netdata
Real-time, per-second monitoring with zero-config auto-discovery.
Netdata delivers high-resolution, real-time metrics with automatic discovery and minimal configuration, ideal for fast, granular infrastructure visibility on your own machines.
Side by side
| Zabbix | Netdata | |
|---|---|---|
| Sovereignty Score | 86 | 85 |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Local-first | Yes | Yes |
| License | AGPL-3.0 | GPL-3.0 |
| Pricing | Free / self-host (optional paid support and cloud from Zabbix) | Free / self-host; optional paid cloud |
Zabbix edges it on the Sovereignty Score, but the right pick depends on the trade-offs below.
Zabbix
Strengths
- +Extremely mature and battle-tested (since 2001)
- +Broad coverage — infra, network, servers, apps, cloud in one platform
- +Powerful alerting and auto-discovery out of the box
- +No per-host or per-metric billing when self-hosted
Trade-offs
- −Interface and setup feel more traditional than newer tools
- −Not OpenTelemetry-native — less focused on distributed tracing/APM
- −Initial configuration has a learning curve
Netdata
Strengths
- +Per-second resolution out of the box
- +Auto-discovers most services
- +Very low setup effort
Trade-offs
- −Less of a long-term query store than Prometheus
- −Best paired with other tools for logs/traces
Facts verified 2026-07-12. Licenses and pricing change — spotted something out of date? That's a correction we want.