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Databases · head to head

NATS vs Puppet

NATS logo

NATS

Databases

High-performance messaging system for cloud-native applications

From
Free
Rated
-
Full reviewWebsite
Puppet logo

Puppet

Cloud

Infrastructure automation for enterprises

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; Puppet no pricing published for commercial tiers; requires contacting sales
  • They diverge on capability: NATS covers Very low latency, Puppet covers Manifests.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which NATS and Puppet actually diverge.

Attributes where NATS and Puppet differ
AttributeNATSPuppet
Pricing modelOpen source, no licence feequote
PlatformsLinux, macOS, Windows, Docker, KubernetesLinux, Windows, Mac, Api
CategoryDatabasesCloud
FoundedUnknown2005

Identical on both: starting price (Free), 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 Puppet

  • Manifests
  • Modules
  • Classes
  • Variables
  • Facts
  • Puppet Master
  • Hiera
  • Facter

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 Puppet
  • Edge and IoT messaging where a lightweight broker mattersnot Puppet
  • Replacing a heavier broker when the workload does not need its guaranteesnot Puppet

Puppet

  • Infrastructure automationnot NATS
  • Configuration managementnot NATS
  • DevOps at scalenot NATS
  • Enterprise infrastructurenot 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

Puppet

  • No pricing published for commercial tiers; requires contacting sales
  • Enterprise and Advanced tiers require custom quote
  • Free tier limited to 25 nodes maximum

Pricing, plan by plan

NATS

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

Puppet

Free
  • DeveloperFree
    • Up to 25 nodes
  • Core Commercial$null/custom
    • 25+ nodes
    • Vendor-backed SLAs
    • Training with Certified Engineers
  • Enterprise$null/custom
    • Web GUI
    • RBAC
    • Multi-environment support
  • Advanced$null/custom
    • AI-powered features
    • Advanced patching
    • Vulnerability remediation

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 Puppet if

  • You need manifests.
  • You want to start without paying.
  • You work on Linux, Windows, Mac, Api.
  • You also want modules.
Puppet review

Questions people ask

Is NATS or Puppet better?
Neither clearly leads. NATS starts at Free and Puppet at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, NATS or Puppet?
NATS starts at Free and Puppet at Free.
Does NATS or Puppet run on more platforms?
NATS runs on Linux, macOS, Windows, Docker, Kubernetes. Puppet runs on Linux, Windows, Mac, Api.
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 Puppet is typically brought in for.
What can NATS do that Puppet cannot?
NATS covers Very low latency, JetStream, Single binary, Request-reply. Puppet covers Manifests, Modules, Classes, Variables.

Answered from the vendors’ own pages

NATS: Is NATS free?

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

Puppet: How much does Puppet cost?

Puppet's Developer tier is free for up to 25 nodes. Commercial, Enterprise, and Advanced tiers require contacting their sales team for a custom quote.

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.

Puppet: Is there a free version of Puppet?

Yes, Puppet's Developer tier is free forever for up to 25 nodes of infrastructure.

Source
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.

Puppet: What does the Enterprise tier include?

Puppet's Enterprise tier includes web GUI, RBAC, and multi-environment support for organizations managing infrastructure at scale, with pricing available upon request.

Source
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