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Databases · head to head

NATS vs Parse Server

NATS logo

NATS

Databases

High-performance messaging system for cloud-native applications

From
Free
Rated
-
Full reviewWebsite
Parse Server logo

Parse Server

APIs

Open-source Backend as a Service platform with REST and GraphQL APIs

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; Parse Server deployment complexity and scaling challenges require operational expertise
  • They diverge on capability: NATS covers Very low latency, Parse Server covers REST API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which NATS and Parse Server actually diverge.

Attributes where NATS and Parse Server differ
AttributeNATSParse Server
Pricing modelOpen source, no licence feeopen-source
PlatformsLinux, macOS, Windows, Docker, KubernetesNode.js, Express, REST API, GraphQL API
CategoryDatabasesAPIs
FoundedUnknown2011

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 Parse Server

  • REST API
  • GraphQL API
  • Authentication
  • Node.js
  • Cloud functions
  • File storage
  • Webhooks
  • Node.js support

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

Parse Server

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

Parse Server

  • Deployment complexity and scaling challenges require operational expertise
  • Requires database management skills for MongoDB or PostgreSQL administration
  • Smaller community and ecosystem compared to Firebase or cloud alternatives
  • Query depth bypass vulnerability allowing denial-of-service attacks via complex REST/GraphQL queries
  • Stored XSS vulnerability through SVG file uploads requires patching

Pricing, plan by plan

NATS

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

Parse Server

Free
  • Open SourceFree
    • Self-hosted Parse Server
    • Community support

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 Parse Server if

  • You need rest api.
  • You want to start without paying.
  • You work on Node.js, Express, REST API, GraphQL API.
  • You also want graphql api.
Parse Server review

Questions people ask

Is NATS or Parse Server better?
Neither clearly leads. NATS starts at Free and Parse Server at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, NATS or Parse Server?
NATS starts at Free and Parse Server at Free.
Does NATS or Parse Server run on more platforms?
NATS runs on Linux, macOS, Windows, Docker, Kubernetes. Parse Server runs on Node.js, Express, REST API, GraphQL 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 Parse Server is typically brought in for.
What can NATS do that Parse Server cannot?
NATS covers Very low latency, JetStream, Single binary, Request-reply. Parse Server covers REST API, GraphQL API, Authentication, Node.js.

Answered from the vendors’ own pages

NATS: Is NATS free?

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

Parse Server: Is Parse Server self-hosted or cloud-managed?

Parse Server is entirely self-hosted and open-source, running on your own infrastructure with no monthly subscription required; you manage the MongoDB or PostgreSQL database and deployment.

NATS: Does NATS persist messages?

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

Parse Server: What databases does Parse Server support?

Parse Server works with MongoDB and PostgreSQL as data stores, giving you flexibility to choose your preferred database system for your application.

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.

Parse Server: What APIs does Parse Server provide?

Parse Server automatically generates both REST and GraphQL APIs based on your application schema, and you can extend these with custom queries, mutations, and remote schemas.

Source
Parse Server: What SDKs are available for Parse Server?

Parse provides native SDKs for iOS (Swift/Objective-C), Android, JavaScript/Node.js, PHP, and .NET, plus REST and GraphQL access for any other platform.

Source
Parse Server: Does Parse Server include user authentication?

Yes. Parse Server includes out-of-the-box user management with support for email/password authentication, OAuth providers (Facebook, Twitter, Google, GitHub, LDAP), push notifications, and campaigns.

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