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Networking · head to head

Netdata vs Zabbix

Netdata logo

Netdata

Networking

Per-second metrics collection with automatic dashboards and on-node anomaly detection

From
Free
Rated
-
Full reviewWebsite
Zabbix logo

Zabbix

Networking

Open source infrastructure and network monitoring with distributed proxies and templating

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Netdata the dashboard interface is under a restrictive Netdata licence rather than GPL and is served from Netdata infrastructure by default, so the deployment is not fully self-contained without extra configuration.; Zabbix the database is the scaling limit, and high frequency polling grows history tables fast enough that untuned installations hit housekeeping stalls and query timeouts within months.
  • They diverge on capability: Netdata covers Per-second collection, Zabbix covers Agent and agentless collection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Netdata and Zabbix actually diverge.

Attributes where Netdata and Zabbix differ
AttributeNetdataZabbix
PlatformsLinux, macOS, FreeBSD, Docker, Kubernetes, WindowsLinux, Docker, Kubernetes, Web

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated), category (Networking).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Netdata

  • Per-second collection
  • Zero-configuration discovery
  • Edge machine learning
  • Tiered database engine
  • Streaming and replication
  • Health alarms

Only in Zabbix

  • Agent and agentless collection
  • Templates
  • Low-level discovery
  • Distributed proxies
  • Trigger expressions
  • Escalation actions

What people use each for

The jobs each tool is most often brought in to do.

Netdata

  • Diagnosing a short-lived performance incident where one-minute averages hide the spike entirelynot Zabbix
  • Kubernetes clusters where per-series billing from a hosted vendor has become the largest observability costnot Zabbix
  • Adding dense host visibility to an estate that already has Prometheus for application metricsnot Zabbix
  • Small teams with no monitoring engineer who need working dashboards on the day of installationnot Zabbix

Zabbix

  • A service provider monitoring thousands of customer devices where per-device commercial licensing is the largest line itemnot Netdata
  • Branch or industrial sites with unreliable links that need local collection and bufferingnot Netdata
  • Mixed estates where the same tool must poll SNMP switches, Linux hosts, Windows servers and Java applicationsnot Netdata
  • Replacing an aging Nagios installation while keeping script-based checks that already existnot Netdata

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Netdata

  • The dashboard interface is under a restrictive Netdata licence rather than GPL and is served from Netdata infrastructure by default, so the deployment is not fully self-contained without extra configuration.
  • Retention is limited by disk on each node unless you build and maintain a parent tier, which makes it a poor archive for year-over-year capacity planning.
  • Per-second collection consumes noticeable CPU and memory on small or heavily loaded nodes, and on constrained edge hardware the monitoring becomes part of the problem.
  • Default alerting is generous and fires on conditions many teams consider normal, so the first weeks involve pruning alarms rather than responding to them.
  • Fleet-level features that make it usable across hundreds of nodes sit in Netdata Cloud, so the free agent alone leaves you visiting individual node dashboards.

Zabbix

  • The database is the scaling limit, and high frequency polling grows history tables fast enough that untuned installations hit housekeeping stalls and query timeouts within months.
  • Initial configuration is heavy; getting useful alerting rather than noise requires understanding trigger expressions, macros and template inheritance, which is a multi-week learning curve for a team new to it.
  • The AGPLv3 change at version 7.0 affects anyone offering Zabbix over a network as part of a commercial service, and that obligation is easy to inherit accidentally during an upgrade.
  • The web interface is functional rather than pleasant, and many sites end up running Grafana alongside it purely for presentation, which is a second system to maintain.
  • Upgrades between major versions touch the database schema and can take hours on large history tables, so the maintenance window is proportional to how much data you kept.

Pricing, plan by plan

Netdata

Free
  • Netdata AgentFree
    • GPLv3 agent with unlimited nodes
    • Per-second metrics and edge anomaly detection
    • Local dashboards and alerting
  • Netdata Cloud paid tiers$undefined/month
    • Per-node subscription for fleet management features
    • Role based access control and longer alert history
    • Business and enterprise support options

Zabbix

Free
  • ZabbixFree
    • No device, node or metric limits
    • Full feature set with no paid edition of the software
    • AGPLv3 from version 7.0 onward
  • Zabbix Technical Support$undefined/year
    • Tiered subscriptions with defined response times
    • Access to Zabbix engineers for configuration and performance issues
    • Bug fix priority and backports

Which should you pick?

Choose Netdata if

  • You need per-second collection.
  • You want to start without paying.
  • You work on Linux, macOS, FreeBSD, Docker, Kubernetes, Windows.
  • You also want zero-configuration discovery.
Netdata review

Choose Zabbix if

  • You need agent and agentless collection.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Web.
  • You also want templates.
Zabbix review

Questions people ask

Is Netdata or Zabbix better?
Neither clearly leads. Netdata starts at Free and Zabbix at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Netdata or Zabbix?
Netdata starts at Free and Zabbix at Free.
Does Netdata or Zabbix run on more platforms?
Netdata runs on Linux, macOS, FreeBSD, Docker, Kubernetes, Windows. Zabbix runs on Linux, Docker, Kubernetes, Web.
Can I use Netdata for free?
Both have a free tier, so you can try either at no cost before committing.
What is Netdata best used for?
Netdata is most often used for diagnosing a short-lived performance incident where one-minute averages hide the spike entirely, kubernetes clusters where per-series billing from a hosted vendor has become the largest observability cost, adding dense host visibility to an estate that already has prometheus for application metrics, small teams with no monitoring engineer who need working dashboards on the day of installation. Of those, diagnosing a short-lived performance incident where one-minute averages hide the spike entirely and kubernetes clusters where per-series billing from a hosted vendor has become the largest observability cost are not what Zabbix is typically brought in for.
What can Netdata do that Zabbix cannot?
Netdata covers Per-second collection, Zero-configuration discovery, Edge machine learning, Tiered database engine. Zabbix covers Agent and agentless collection, Templates, Low-level discovery, Distributed proxies.

Answered from the vendors’ own pages

Netdata: Is Netdata fully open source?

The agent is GPLv3. The current dashboard interface is under a separate restrictive licence, so the complete product is open core rather than open source.

Zabbix: Is Zabbix genuinely free for commercial use?

The software has no licence fee at any scale. From version 7.0 it is AGPLv3, so offering it as a network service to third parties carries source distribution obligations.

Netdata: Can it run without any connection to Netdata Cloud?

Yes, agents work standalone and dashboards can be served locally, but you lose fleet-wide views and need to configure local interface serving deliberately.

Zabbix: What is the real cost of running it?

Database administration and the person who tunes it. Budget for PostgreSQL with TimescaleDB and someone who owns the retention policy.

Netdata: Does it replace Prometheus?

For host and container infrastructure metrics it often does. For custom application metrics with an existing exporter ecosystem and long retention, most teams keep both.

Zabbix: How does it compare to a commercial per-device tool?

It removes the licence line entirely and adds an operations line. Below a few hundred devices the commercial tool is often cheaper in total; above that Zabbix wins clearly.

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