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APIs · head to head

Hoppscotch vs NATS

Hoppscotch logo

Hoppscotch

APIs

Open-source API development ecosystem with web-based REST client

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: Hoppscotch open-source project with no published commercial support plans or pricing; NATS core NATS has no persistence at all, so messages are lost if no subscriber is listening
  • They diverge on capability: Hoppscotch covers REST Client, NATS covers Very low latency.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Hoppscotch and NATS actually diverge.

Attributes where Hoppscotch and NATS differ
AttributeHoppscotchNATS
Pricing modelfreemiumOpen source, no licence fee
PlatformsWeb, Desktop, Self-hostedLinux, macOS, Windows, Docker, Kubernetes
CategoryAPIsDatabases
Founded2019Unknown

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 Hoppscotch

  • REST Client
  • WebSocket
  • gRPC Client
  • GitHub
  • Documentation tools
  • CI/CD
  • Web support
  • Desktop support

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.

Hoppscotch

  • API Developmentnot NATS
  • API Gatewaynot NATS
  • API Testingnot NATS
  • API Documentationnot NATS
  • Microservicesnot NATS

NATS

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

Where each one falls short

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

Hoppscotch

  • Open-source project with no published commercial support plans or pricing
  • No official enterprise tier or SLA information disclosed

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

Hoppscotch

Free
  • Open SourceFree
    • Full REST client
    • WebSocket support
    • Community
  • Teams$8/monthly
    • Team collaboration
    • Cloud sync
    • Priority support

NATS

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

Which should you pick?

Choose Hoppscotch if

  • You need rest client.
  • You want to start without paying.
  • You work on Web, Desktop, Self-hosted.
  • You also want websocket.
Hoppscotch 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 Hoppscotch or NATS better?
Neither clearly leads. Hoppscotch 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, Hoppscotch or NATS?
Hoppscotch starts at Free and NATS at Free.
Does Hoppscotch or NATS run on more platforms?
Hoppscotch runs on Web, Desktop, Self-hosted. NATS runs on Linux, macOS, Windows, Docker, Kubernetes.
Can I use Hoppscotch for free?
Both have a free tier, so you can try either at no cost before committing.
What is Hoppscotch best used for?
Hoppscotch is most often used for api development, api gateway, api testing, api documentation. Of those, api development and api gateway are not what NATS is typically brought in for.
What can Hoppscotch do that NATS cannot?
Hoppscotch covers REST Client, WebSocket, gRPC Client, GitHub. NATS covers Very low latency, JetStream, Single binary, Request-reply.

Answered from the vendors’ own pages

Hoppscotch: Is Hoppscotch free to use for API development?

Yes, Hoppscotch is a completely free, open-source API development ecosystem. There are no subscription fees, license costs, or registration requirements to access the core platform.

Source
NATS: Is NATS free?

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

Hoppscotch: Can I deploy Hoppscotch on my own infrastructure?

As an open-source project, Hoppscotch can be self-hosted and deployed on your own infrastructure. The source code is available for customization and deployment in private environments.

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.

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.

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