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Cloud · head to head

CapRover vs NATS

CapRover logo

CapRover

Cloud

Free self-hosted platform built on Docker Swarm with a dashboard and automatic certificates

From
Free
Rated
-
Full reviewWebsite
NATS logo

NATS

Databases

High-performance messaging system for cloud-native applications

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CapRover since June 2026 one pseudonymous account wrote 97 of roughly 100 commits and the next human contributor wrote one, so there is no identifiable person or company to contract with, escalate to or hold responsible.; NATS core NATS has no persistence at all, so messages are lost if no subscriber is listening
  • They diverge on capability: CapRover covers One-click applications, NATS covers Very low latency.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which CapRover and NATS actually diverge.

Attributes where CapRover and NATS differ
AttributeCapRoverNATS
PlatformsWeb, Linux, Docker, CLI, Self-hostedLinux, macOS, Windows, Docker, Kubernetes
CategoryCloudDatabases

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 CapRover

  • One-click applications
  • Automatic certificates
  • Web dashboard
  • Multiple deploy paths
  • Docker Swarm clustering
  • Custom nginx configuration

Only in NATS

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

What people use each for

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

CapRover

  • Running a personal server or homelab with several applications behind automatic certificatesnot NATS
  • A two person team that wants a dashboard rather than a terminal for deployments on one boxnot NATS
  • Standing up one-click databases and internal tools without writing Compose filesnot NATS
  • Hosting client demos cheaply where downtime is inconvenient rather than expensivenot NATS

NATS

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

Where each one falls short

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

CapRover

  • Since June 2026 one pseudonymous account wrote 97 of roughly 100 commits and the next human contributor wrote one, so there is no identifiable person or company to contract with, escalate to or hold responsible.
  • Donations over the last twelve months totalled 285 US dollars and there is no commercial tier, so no paid support exists at any price and no maintenance commitment is funded.
  • The LICENSE file is Apache 2.0 with a superseding appendix that bans redistributing a paid version and refers to paid features that do not yet exist, and GitHub cannot classify it, so the terms already anticipate a commercial change of direction.
  • Releases arrive in bursts with an eleven month gap between September 2023 and August 2024 and two further gaps of about six months since, so there is no basis for assuming a security fix will land promptly.
  • The backup feature is documented as experimental, covers only the CapRover configuration directory and explicitly excludes persistent volumes and container images, so every database has to be dumped separately with its container stopped.

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

Pricing, plan by plan

CapRover

Free
  • CapRoverFree
    • No paid tier and no hosted offering
    • Unlimited applications, servers and users
    • Community support through Slack and GitHub

NATS

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

Which should you pick?

Choose CapRover if

  • You need one-click applications.
  • You want to start without paying.
  • You work on Web, Linux, Docker, CLI, Self-hosted.
  • You also want automatic certificates.
CapRover review

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

Questions people ask

Is CapRover or NATS better?
Neither clearly leads. CapRover starts at Free and NATS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CapRover or NATS?
CapRover starts at Free and NATS at Free.
Does CapRover or NATS run on more platforms?
CapRover runs on Web, Linux, Docker, CLI, Self-hosted. NATS runs on Linux, macOS, Windows, Docker, Kubernetes.
Can I use CapRover for free?
Both have a free tier, so you can try either at no cost before committing.
What is CapRover best used for?
CapRover is most often used for running a personal server or homelab with several applications behind automatic certificates, a two person team that wants a dashboard rather than a terminal for deployments on one box, standing up one-click databases and internal tools without writing compose files, hosting client demos cheaply where downtime is inconvenient rather than expensive. Of those, running a personal server or homelab with several applications behind automatic certificates and a two person team that wants a dashboard rather than a terminal for deployments on one box are not what NATS is typically brought in for.
What can CapRover do that NATS cannot?
CapRover covers One-click applications, Automatic certificates, Web dashboard, Multiple deploy paths. NATS covers Very low latency, JetStream, Single binary, Request-reply.

Answered from the vendors’ own pages

CapRover: Does CapRover cost anything?

No. There is no paid tier and no hosted version. The only income is donations, which came to 285 US dollars over the last twelve months.

NATS: Is NATS free?

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

CapRover: Is the licence really Apache 2.0?

Not quite. The LICENSE file is Apache 2.0 plus an appendix that supersedes it in case of conflict, forbidding modification of paid features and redistribution of a paid version. GitHub does not recognise the result as a standard licence.

NATS: Does NATS persist messages?

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

CapRover: Does the backup feature protect my databases?

No. It backs up the CapRover configuration directory only and explicitly excludes persistent directories and container images. You have to dump each database yourself with the container stopped.

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.

CapRover: Can I move off Docker Swarm later?

Not without rebuilding. CapRover is architecturally tied to Swarm, so outgrowing it means migrating applications to a different platform rather than switching a scheduler.

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