Comparison

Apache Pulsar vs Confluent Cloud

On the evidence we track, Confluent Cloud leads this comparison with a composite score of 91/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Apache Pulsar full profile →Confluent Cloud full profile →

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Apache Pulsar59

★Confluent Cloud91

Attribute comparison across 2 tools
Attribute	Apache Pulsar	Confluent CloudLeader
Vioscale score	59 / 100low · 29%	91 / 100medium · 72%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	freemium
Price levelpricing.price_level	free	low
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	35	130
Security
Disclosure policysecurity.disclosure_policy	-	✓
Fedrampsecurity.fedramp	-	✓
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Iso27001security.iso27001	-	✓
Pcisecurity.pci	-	✓
Scorecardsecurity.scorecard	7	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.pulsar%3Apulsar-client-admin&per_page=100 · Last 12m: 0	-
Reliability
Sla pctreliability.sla_pct	-	99.99
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	316	-
Github starsadoption.github_stars	15,315	-
Activity
Commits last 30dactivity.commits_last_30d	69	-
Release
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	Apache-2.0	-
Language
Primarylanguage.primary	Java	-
Market
Availabilitymarket.availability	-	Available worldwide · Popular in US, GB · HQ US

Score

Vioscale score

Apache Pulsar59 / 100low · 29%

Confluent Cloud91 / 100medium · 72%

Pricing

Free tier

Apache Pulsar✓

Confluent Cloud✓

Model

Apache Pulsarcommercial

Confluent Cloudfreemium

Price level

Apache Pulsarfree

Confluent Cloudlow

Transparent

Apache Pulsar–

Confluent Cloud✓

Integrations

Count

Apache Pulsar35

Confluent Cloud130

Security

Disclosure policy

Apache Pulsar–

Confluent Cloud✓

Fedramp

Apache Pulsar–

Confluent Cloud✓

Gdpr

Apache Pulsar–

Confluent Cloud✓

Hipaa

Apache Pulsar–

Confluent Cloud✓

Iso27001

Apache Pulsar–

Confluent Cloud✓

Pci

Apache Pulsar–

Confluent Cloud✓

Scorecard

Apache Pulsar7

Confluent Cloud–

Soc2

Apache Pulsar–

Confluent Cloud✓

Vulnerabilities

Apache PulsarCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.apache.pulsar%3Apulsar-client-admin&per_page=100 · Last 12m: 0

Confluent Cloud–

Reliability

Sla pct

Apache Pulsar–

Confluent Cloud99.99

Status page

Apache Pulsar–

Confluent Cloud✓

Adoption

Dependent repos

Apache Pulsar316

Confluent Cloud–

Github stars

Apache Pulsar15,315

Confluent Cloud–

Activity

Commits last 30d

Apache Pulsar69

Confluent Cloud–

Release

History

Apache Pulsar20 items

Confluent Cloud–

License

Spdx

Apache PulsarApache-2.0

Confluent Cloud–

Language

Primary

Apache PulsarJava

Confluent Cloud–

Market

Availability

Apache Pulsar–

Confluent CloudAvailable worldwide · Popular in US, GB · HQ US

Capabilities

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

Capability comparison for Message Queues
Capability	Apache Pulsar	Confluent Cloud
Core
Messaging paradigm	Pub/sub	Pub/sub
Correctness
Delivery guarantee	Exactly-once	-
Ordering guarantee	Per-partition	Per-partition
Durability
Durable replayable log	✓	✓
Message replay / rewind	✓	✓
Interop
Wire protocol	pulsar://	Kafka protocol, REST API
Kafka-protocol compatible	✓	✓
Scale
Partitioned horizontal scaling	✓	✓
Geo / cross-region replication	✓	✓
Consumption
Consumer groups / competing consumers	✓	✓
Dead-letter queue	-	-
Deployment
Managed cloud offering exists	-	✓
Hosting	Cloud + self-hosted	Cloud only
Processing
Built-in stream processing	✓	✓

Core

Messaging paradigm

Apache PulsarPub/sub

Confluent CloudPub/sub

Correctness

Delivery guarantee

Apache PulsarExactly-once

Confluent Cloud-

Ordering guarantee

Apache PulsarPer-partition

Confluent CloudPer-partition

Durability

Durable replayable log

Apache Pulsar✓

Confluent Cloud✓

Message replay / rewind

Apache Pulsar✓

Confluent Cloud✓

Interop

Wire protocol

Apache Pulsarpulsar://

Confluent CloudKafka protocol, REST API

Kafka-protocol compatible

Apache Pulsar✓

Confluent Cloud✓

Scale

Partitioned horizontal scaling

Apache Pulsar✓

Confluent Cloud✓

Geo / cross-region replication

Apache Pulsar✓

Confluent Cloud✓

Consumption

Consumer groups / competing consumers

Apache Pulsar✓

Confluent Cloud✓

Dead-letter queue

Apache Pulsar-

Confluent Cloud-

Deployment

Managed cloud offering exists

Apache Pulsar-

Confluent Cloud✓

Hosting

Apache PulsarCloud + self-hosted

Confluent CloudCloud only

Processing

Built-in stream processing

Apache Pulsar✓

Confluent Cloud✓

What each one is

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

Apache Pulsar

A distributed messaging system built for cloud deployments that enables applications to reliably publish and consume messages—either individually or as continuous streams—with sub-10-millisecond latency, supporting millions of independent topics and large-scale streaming workloads.

Independently observed

Confluent Cloud

Leader

Confluent Cloud is a fully managed Apache Kafka service enabling organizations to stream high-volume, low-latency events between systems in real-time. It eliminates operational overhead through automatic scaling, multi-region replication, and costs significantly less than self-managed Kafka deployments.

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 2026-08-14verify ↗

Confluent Cloud

Leader

Usage-basedFree tier30-day trial

Usage-based pay-as-you-go pricing with free tier option

BasicFree
StandardPay-as-you-go
- infinite storage
- audit logs
- 20%+ throughput savings
EnterprisePay-as-you-go
- private networking
- autoscaling to GBps+ throughput
- 32%+ throughput savings

as of 2026-08-14verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Apache Pulsar	Confluent Cloud
WebPlatforms	✗	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗
HybridDeployment	✗	✓

Platforms

Web

Apache Pulsar✗

Confluent Cloud✓

CLI

Apache Pulsar✓

Confluent Cloud✓

Deployment

Cloud / SaaS

Apache Pulsar✓

Confluent Cloud✓

Self-hosted

Apache Pulsar✓

Confluent Cloud✗

Hybrid

Apache Pulsar✗

Confluent Cloud✓

Integrations

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

Apache Pulsar

29 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
+5 more

Independently observed

Confluent Cloud

Leader

10 total

Salesforce
Google Ads
Google Analytics
Hotjar
Quickbooks
MySQL
Apache Flink
Schema Registry
Apache Iceberg
Delta Lake

Independently observed

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