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Open-source Apache Pulsar desktop client

Your Pulsar topics
and messages
finally within reach

Connect directly. Browse every namespace. Observe live traffic without creating a durable subscription—and get to the message that matters.

Download TopicConsole View source on GitHub

Free · Open source · macOS · Windows · Linux · No companion server

TopicConsole browsing topics and inspecting Pulsar messages
Direct broker and admin connections Local credentials stay on your machine Lightweight no Docker or JVM required

One focused workspace

From “is anything arriving?” to the exact payload, without changing tools.

01

Navigate the cluster

See Pulsar the way it is organized.

Connect with your service and admin URLs, then move through tenants, namespaces, topics, and subscriptions from one desktop workspace, with partition counts visible at a glance.

  • Test connections before saving
  • Discover resources from the live cluster
  • Keep multiple environments close at hand
02

Observe safely

Watch live messages. Leave no durable cursor behind.

Reader-backed observer mode gives you a low-impact path for incident checks and development: inspect new traffic without creating a durable subscription.

Observer modeDesigned for looking first, before you decide to consume or administer.
03

Find the evidence

Search history, inspect details, export what you found.

Scan from the beginning with bounded filters, open message metadata and payloads side by side, then export results as JSON or CSV for the next step in your investigation.

  • Filter by message key, payload text, JSONPath or JMESPath, and publish time
  • Inspect metadata and content together
  • Produce test messages and run explicit admin actions

A desktop tool, not another platform

Your connection goes from your machine to your Pulsar environment.

01

Bring your endpoints

Use the Pulsar service and admin URLs you already operate.

02

Keep credentials local

No hosted control plane or TopicConsole account sits in the middle.

03

Start in read mode

Observe first; producing and administration remain explicit actions.

Early, open, and actively developed

Put a clear window on your Pulsar cluster.

Download current builds for Apple Silicon and Intel macOS, Windows amd64, and Linux amd64. Source and issue tracking stay public under AGPL-3.0.

Open GitHub Releases Feedback and issues