Pulsar client libraries

Pulsar client libraries

Language-specific client libraries

Pulsar supports the following language-specific client libraries:

Language	Documentation	Release note	Code repo
Java	User doc API doc	Standalone	Bundled
C++	User doc API doc	Standalone	Standalone
Python	User doc API doc	Standalone	Standalone
Go client	User doc API doc	Standalone	Standalone
Node.js	User doc API doc	Standalone	Standalone
C#/DotPulsar	User doc	Standalone	Standalone

tip

If you want to create your own client library, read the binary protocol documentation.

Language-agnostic client libraries

Pulsar supports the following language-agnostic client libraries:

Interface	Documentation	Release note	Code repo
REST	User doc	Bundled	Bundled
WebSocket	User doc	Standalone	Bundled

note

Client / Broker compatibility

A design goal of Pulsar is to ensure full compatibility between all versions of the client and the broker. When a client connects to a broker they agree upon a version of the protocol to use. As a result, new features that rely on an updates to the protocol are only available when using both newer clients and newer brokers.

Feature matrix

The Client Feature Matrix page provides an overview of the latest feature supportability on language-specific clients.

Third-party clients

Besides the officially released clients, multiple projects on developing Pulsar clients are available in different languages.

tip

Want your repository listed here? Click the “Edit this page” button at the bottom of this page.

.NET (C#/F#/VB)

Project	Description	License	Badges
pulsar-client-dotnet	Apache Pulsar native client for .NET (C#/F#/VB)	MIT

Go

Project	Description	License	Badges
pulsar-client-go	A Go client library for Apache Pulsar	Apache-2.0

Haskell

Project	Description	License	Badges
supernova	Apache Pulsar client for Haskell	Apache-2.0

Node.js

Project	Description	License	Badges
pulsar-flex	Pulsar Flex is a modern Apache Pulsar client for Node.js, developed to be independent of C++.	MIT

PHP

Project	Description	License	Badges
pulsar-client-php	PHP Native Client library for Apache Pulsar	MIT

Rust

Project	Description	License	Badges
pulsar-rs	Rust Client library for Apache Pulsar	Apache-2.0

Scala

Project	Description	License
pulsar4s	Idiomatic, typesafe, and reactive Scala client for Apache Pulsar	Apache-2.0
neutron	Purely functional Apache Pulsar client for Scala built on top of Fs2	Apache-2.0
neutron (profunktor’s fork)	Fs2-powered Apache Pulsar client with support for Scala 2 and 3	Apache-2.0