Softwr

Databases · head to head

NATS vs Netdata

NATS logo

NATS

Databases

High-performance messaging system for cloud-native applications

From
Free
Rated
-
Full reviewWebsite
Netdata logo

Netdata

Networking

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: NATS core NATS has no persistence at all, so messages are lost if no subscriber is listening; 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.
  • They diverge on capability: NATS covers Very low latency, Netdata covers Per-second collection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which NATS and Netdata actually diverge.

Attributes where NATS and Netdata differ
AttributeNATSNetdata
PlatformsLinux, macOS, Windows, Docker, KubernetesLinux, macOS, FreeBSD, Docker, Kubernetes, Windows
CategoryDatabasesNetworking

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

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 NATS

  • Very low latency
  • JetStream
  • Single binary
  • Request-reply

Only in Netdata

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

What people use each for

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

NATS

  • Service-to-service messaging where latency is the binding constraintnot Netdata
  • Edge and IoT messaging where a lightweight broker mattersnot Netdata
  • Replacing a heavier broker when the workload does not need its guaranteesnot Netdata

Netdata

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

Where each one falls short

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

NATS

  • Core NATS has no persistence at all, so messages are lost if no subscriber is listening
  • JetStream adds the durability but also the operational complexity NATS is chosen to avoid
  • A much smaller ecosystem than Kafka or RabbitMQ, with fewer connectors and integrations
  • Fewer people know it, so hiring and existing organisational knowledge favour the alternatives

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.

Pricing, plan by plan

NATS

Free
  • NATSFree
    • Full functionality
    • No usage limits
    • Community support

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

Which should you pick?

Choose NATS if

  • You need very low latency.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker, Kubernetes.
  • You also want jetstream.
NATS review

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

Questions people ask

Is NATS or Netdata better?
Neither clearly leads. NATS starts at Free and Netdata at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, NATS or Netdata?
NATS starts at Free and Netdata at Free.
Does NATS or Netdata run on more platforms?
NATS runs on Linux, macOS, Windows, Docker, Kubernetes. Netdata runs on Linux, macOS, FreeBSD, Docker, Kubernetes, Windows.
Can I use NATS for free?
Both have a free tier, so you can try either at no cost before committing.
What is NATS best used for?
NATS is most often used for service-to-service messaging where latency is the binding constraint, edge and iot messaging where a lightweight broker matters, replacing a heavier broker when the workload does not need its guarantees. Of those, service-to-service messaging where latency is the binding constraint and edge and iot messaging where a lightweight broker matters are not what Netdata is typically brought in for.
What can NATS do that Netdata cannot?
NATS covers Very low latency, JetStream, Single binary, Request-reply. Netdata covers Per-second collection, Zero-configuration discovery, Edge machine learning, Tiered database engine.

Answered from the vendors’ own pages

NATS: Is NATS free?

Yes, open source and CNCF-graduated. Synadia sells a managed service.

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.

NATS: Does NATS persist messages?

Core NATS does not — it is fire-and-forget. JetStream adds persistence, streaming and replay when you need them.

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.

NATS: NATS or Kafka?

NATS is far lighter and lower latency, and much simpler to run. Kafka is the answer when you need a durable replayable log and a large connector ecosystem.

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.

Share

Related pages

More on NATS

More on Netdata

Keep looking

Other head to heads