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Databases · head to head

Apache Pulsar vs Parse Server

Apache Pulsar logo

Apache Pulsar

Databases

Cloud-native messaging and streaming with separated storage

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: Apache Pulsar more components than Kafka: brokers, BookKeeper and ZooKeeper each need operating; Parse Server deployment complexity and scaling challenges require operational expertise
  • They diverge on capability: Apache Pulsar covers Separated storage, Parse Server covers REST API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Apache Pulsar and Parse Server actually diverge.

Attributes where Apache Pulsar and Parse Server differ
AttributeApache PulsarParse Server
Pricing modelOpen source, no licence feeopen-source
PlatformsLinux, Docker, Kubernetes, Self-hostedNode.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 Apache Pulsar

  • Separated storage
  • Queuing and streaming
  • Built-in multi-tenancy
  • Geo-replication

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.

Apache Pulsar

  • Platforms needing both work queues and replayable streams without running two systemsnot Parse Server
  • Multi-tenant messaging where isolation between teams is a requirementnot Parse Server
  • Deployments where storage and traffic grow at genuinely different ratesnot Parse Server

Parse Server

  • API Developmentnot Apache Pulsar
  • API Gatewaynot Apache Pulsar
  • API Testingnot Apache Pulsar
  • API Documentationnot Apache Pulsar
  • Microservicesnot Apache Pulsar

Where each one falls short

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

Apache Pulsar

  • More components than Kafka: brokers, BookKeeper and ZooKeeper each need operating
  • Correspondingly harder to run well, and the expertise is rarer than Kafka expertise
  • A much smaller ecosystem of connectors, tooling and hiring pool than Kafka
  • The architectural advantages only pay off at a scale most deployments never reach

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

Apache Pulsar

Free
  • Apache PulsarFree
    • Full functionality
    • No usage limits
    • Community support

Parse Server

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

Which should you pick?

Choose Apache Pulsar if

  • You need separated storage.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want queuing and streaming.
Apache Pulsar 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 Apache Pulsar or Parse Server better?
Neither clearly leads. Apache Pulsar 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, Apache Pulsar or Parse Server?
Apache Pulsar starts at Free and Parse Server at Free.
Does Apache Pulsar or Parse Server run on more platforms?
Apache Pulsar runs on Linux, Docker, Kubernetes, Self-hosted. Parse Server runs on Node.js, Express, REST API, GraphQL API.
Can I use Apache Pulsar for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apache Pulsar best used for?
Apache Pulsar is most often used for platforms needing both work queues and replayable streams without running two systems, multi-tenant messaging where isolation between teams is a requirement, deployments where storage and traffic grow at genuinely different rates. Of those, platforms needing both work queues and replayable streams without running two systems and multi-tenant messaging where isolation between teams is a requirement are not what Parse Server is typically brought in for.
What can Apache Pulsar do that Parse Server cannot?
Apache Pulsar covers Separated storage, Queuing and streaming, Built-in multi-tenancy, Geo-replication. Parse Server covers REST API, GraphQL API, Authentication, Node.js.

Answered from the vendors’ own pages

Apache Pulsar: Is Apache Pulsar free?

Yes, open source under the Apache Software Foundation.

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.

Apache Pulsar: Pulsar or Kafka?

Pulsar separates storage from compute and covers queuing and streaming in one system. Kafka has a far larger ecosystem and hiring pool. Most teams should have a specific reason before choosing Pulsar.

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.

Apache Pulsar: Why does separated storage matter?

Brokers hold no data, so adding or replacing one requires no rebalancing, and storage can grow without adding serving capacity.

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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