Apache Pulsar

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About

Apache Pulsar is ranked #7 of 27 in message queue (MQ) software on Inferse. It runs on API, Linux, macOS, Self-hosted, Windows. There is a free plan.

Compared on message queue (MQ) software

Free plan: Yespulsar.apache.org
Deployment model: self-hostedpulsar.apache.org
Stream processing: Yespulsar.apache.org
Schema registry: Yespulsar.apache.org
Delivery guarantee: bothpulsar.apache.org
Supported client languages: Java, Go, Python, C++, C#/.NET, Node.js, WebSocketpulsar.apache.org

Facts

What it does: Apache Pulsar is an open-source, distributed messaging and streaming platform built for the cloud.pulsar.apache.org · 29 Sept 2026
Latency and scale: Pulsar supports message consumption with less than 10 ms latency and up to one million unique topics in a single cluster.pulsar.apache.org · 29 Sept 2026
Geo-replication: Pulsar supports configurable replication across geographic regions and automatic client failover to healthy clusters.pulsar.apache.org · 29 Sept 2026
Tenancy and access: Tenants and policies let organizations control access to data and actions, and isolate brokers for noisy-neighbor protection.pulsar.apache.org · 29 Sept 2026
Clients: Officially maintained client libraries are available for Java, Go, Python, C++, Node.js, and C#.pulsar.apache.org · 29 Sept 2026
Integrations: Built-in connectors import and export data for systems including Kafka, RabbitMQ, MySQL, PostgreSQL, MongoDB, Cassandra, and Elasticsearch.pulsar.apache.org · 29 Sept 2026
Serverless processing: Pulsar Functions process messages using user-defined logic and support Java, Python, and Go.pulsar.apache.org · 29 Sept 2026
Storage and retention: Tiered storage can offload data from BookKeeper to blob storage such as S3 for unlimited retention.pulsar.apache.org · 29 Sept 2026
Security controls: Pulsar provides encryption, pluggable authentication, and authorization controls, but these are not enabled by default.pulsar.apache.org · 29 Sept 2026
Release integrity: Pulsar release files have OpenPGP signatures and SHA-512 checksums for integrity verification.pulsar.apache.org · 29 Sept 2026
Deployment: Pulsar can run in Docker or Kubernetes, and the project offers a Helm chart for Kubernetes deployment.pulsar.apache.org · 29 Sept 2026
Notable release limit: The 5.0.0-M2 milestone is intended for early testing and feedback and is not meant for production use.pulsar.apache.org · 29 Sept 2026
Maker: The Apache Software Foundation is a nonprofit organization that provides software for the public good.apache.org · 29 Sept 2026