Katman MQTT Client

Katman MQTT Client is a powerful desktop workspace built for Industrial IoT, automation engineers, and MQTT developers.

Connect to MQTT brokers, monitor live traffic, inspect payloads, troubleshoot communication, and simulate real-world MQTT scenarios — all from one application.

Key Features

Secure Connections: Connect using MQTT 3.1, 3.1.1 and 5.0 with TLS and custom CA certificates.

Live Topic Discovery: Automatically discover topics, explore message streams, and inspect payload changes.

Publish Templates: Create reusable payload templates and publish messages once, periodically, or continuously.

Record & Replay: Capture incoming MQTT traffic, save sessions, and replay messages for testing and troubleshooting.

Request & Response: Monitor request-response communication, measure latency, and identify timeouts.

Advanced Logging: Record selected MQTT topics and export captured messages to CSV for further analysis.

Whether you're developing an IoT application, commissioning an industrial system, or troubleshooting an MQTT-based automation network, Katman MQTT helps you understand what's happening on your broker.

More than an MQTT client.

Website: https://www.katmanmqtt.com