Secure Connection
Connect with TLS, custom CA certificates, and create multiple connection sessions. Supports MQTT v3.1, v3.1.1, and v5.0.
More Than an MQTT Client
Built to make MQTT development, testing, and troubleshooting faster and easier.
Dynamic Topic Discovery
Automatically build a live topic tree, explore messages in table view, and compare payload changes.
Publish Templates
Create reusable payload templates and publish once, on a schedule, or continuously so you're always prepared for testing and commissioning.
Record & Replay
Capture all incoming MQTT traffic, save complete sessions for offline analysis, and replay recorded data to simulate real-world conditions.
Request & Response
Track request-response flows, measure latency, and identify slow responses or timeouts.
Logging
Log specific MQTT topics in detail and export captured messages to CSV for debugging, analysis, and documentation.
One MQTT workspace. Every operating system.
Katman MQTT is a multiplatform MQTT client, running natively on Windows, macOS, and Linux.
Never miss anMQTT message.
Be prepared for testing, commissioning, and troubleshooting.
With its unique features, Katman helps you capture what is happening, understand it, and reproduce it when needed.