vioscaleAI
Comparison

Apache Pulsar vs WarpStream

On the evidence we track, WarpStream leads this comparison with a composite score of 75/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Apache Pulsar full profile →WarpStream full profile →
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Apache Pulsar60
★WarpStream75
Score
vioscaleAI score
Apache Pulsar60 / 100low · 38%
WarpStream75 / 100medium · 62%
Pricing
Free tier
Apache Pulsar✓
WarpStream✓
Model
Apache Pulsaropen_source
WarpStreamcommercial
Price level
Apache Pulsarfree
WarpStreamunknown
Transparent
Apache Pulsar–
WarpStream✗
Integrations
Count
Apache Pulsar35
WarpStream100
Security
Certifications
Apache Pulsar–
WarpStreamSOC 2 Type I, SOC 2 Type II
Iso27001
Apache Pulsar–
WarpStream✓
Scorecard
Apache Pulsar7.1
WarpStream–
Soc2
Apache Pulsar–
WarpStream✓
Trust center
Vulnerabilities
Reliability
Sla pct
Apache Pulsar–
WarpStream99.999
Status page
Apache Pulsar–
WarpStream✓
Adoption
Dependent repos
Apache Pulsar316
WarpStream–
Github stars
Apache Pulsar15,343
WarpStream–
Activity
Commits last 30d
Apache Pulsar100
WarpStream–
Release
Cadence days
Apache Pulsar3
WarpStream–
History
Apache Pulsar20 items
WarpStream–
License
Spdx
Apache PulsarApache-2.0
WarpStream–
Language
Primary
Apache PulsarJava
WarpStream–
Market
Availability
Apache Pulsar–
WarpStreamAvailable worldwide
Content
Faq
Apache Pulsar6 items
WarpStream6 items

Capabilities

Feature-by-feature on the axes that matter for message queues. “-” means undocumented, not absent.

Core
Messaging paradigm
Apache PulsarPub/sub
WarpStreamLog / streaming
Correctness
Delivery guarantee
Apache PulsarExactly-once
WarpStreamAt-least-once
Ordering guarantee
Apache PulsarPer-partition
WarpStreamPer-partition
Durability
Durable replayable log
Apache Pulsar✓
WarpStream✓
Message replay / rewind
Apache Pulsar✓
WarpStream✓
Interop
Wire protocol
Apache Pulsarpulsar://
WarpStreamKafka
Kafka-protocol compatible
Apache Pulsar✓
WarpStream✓
Scale
Partitioned horizontal scaling
Apache Pulsar✓
WarpStream✓
Geo / cross-region replication
Apache Pulsar✓
WarpStream✓
Consumption
Consumer groups / competing consumers
Apache Pulsar✓
WarpStream✓
Dead-letter queue
Apache Pulsar-
WarpStream-
Deployment
Managed cloud offering exists
Apache Pulsar-
WarpStream✓
Hosting
Apache PulsarCloud + self-hosted
WarpStreamCloud only
Processing
Built-in stream processing
Apache Pulsar✓
WarpStream✓

What each one is

The product in its own terms, so the numbers below have context.

Apache Pulsar

A message broker supporting both pub-sub and queue-based messaging patterns. It provides durable storage with strong ordering guarantees, horizontally scales to millions of topics and messages per second, and supports geo-replication for distributed deployments.

Independently observed

WarpStream

Leader

WarpStream is a diskless, Kafka-protocol-compatible streaming platform designed to minimize data streaming costs. It offers managed cloud hosting or self-managed deployment, includes built-in autoscaling, cross-region replication, and embedded stream processing.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Apache Pulsar

Open source
as of verify ↗

WarpStream

Leader
from $0.01/moUsage-basedFree tier

From $100/month base + metered write throughput ($0.01-$0.003/GiB, tiered by volume) and storage. Free $400 non-expiring credits with no card required.

  • Dev$100/month base + metered write throughput and cluster minutes
    • Core functionality
    • 99.9% SLA
    • mTLS
  • Fundamentals$500/month base + metered usage
    • Production functionality
    • 99.9% SLA
    • Agent Groups
    • Cluster Recovery
    • mTLS
    • +3 more
  • Pro$1,500/month base + metered usage
    • Advanced isolation
    • Multi-region replication
    • 99.99% SLA
    • Lightning Topics
    • Topic Recovery
    • +1 more
  • EnterpriseContact sales
    • 99.999% SLA
    • Dedicated Control Plane Cell
    • Multi-Region HA Replication
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Apache Pulsar✓
WarpStream✓
macOS
Apache Pulsar✓
WarpStream✗
Windows
Apache Pulsar✓
WarpStream✗
Linux
Apache Pulsar✓
WarpStream✗
CLI
Apache Pulsar✓
WarpStream✓
Deployment
Cloud / SaaS
Apache Pulsar✓
WarpStream✓
Self-hosted
Apache Pulsar✓
WarpStream✓
Hybrid
Apache Pulsar✗
WarpStream✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Apache Pulsar

31 total
  • Kafka
  • RabbitMQ
  • MongoDB
  • Cassandra
  • Elasticsearch
  • HBase
  • HDFS
  • InfluxDB
  • Redis
  • Solr
  • DynamoDB
  • Kinesis
  • Azure Data Explorer
  • ClickHouse
  • PostgreSQL
  • MariaDB
  • SQLite
  • Debezium MySQL
  • Debezium PostgreSQL
  • Debezium MongoDB
  • Debezium Oracle
  • Debezium Microsoft SQL Server
  • Canal
  • Aerospike
  • +7 more
Independently observed

WarpStream

Leader
17 total
  • Apache Kafka
  • Bento
  • RisingWave
  • Grafana
  • Materialize
  • Snowflake
  • Schema Registry
  • Iceberg
  • Tigris
  • Protobuf
  • Avro
  • JSON
  • AWS S3
  • GCP GCS
  • Azure Blob Storage
  • Amazon MSK
  • Confluent Cloud
Independently observed
Still deciding?

Apache Pulsar or WarpStream: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.