MQTT desktop client

MQTT.fx download mirror

Download MQTT.fx 1.7.1 and choose a practical MQTT client for broker testing.

Start with the installer you need.

MQTT.fx remains useful when you need a familiar desktop MQTT client for a quick publish, subscribe, username/password, TLS, or broker connectivity check.

This mirror keeps direct MQTT.fx 1.7.1 installer links visible for Windows, macOS, Debian, Ubuntu, Fedora, RHEL, and CentOS users who still need the legacy client.

Windows x64 .exe

Windows x64

Use this installer on modern 64-bit Windows desktops.

Download .exe

macOS .dmg

macOS

Use this disk image for Intel-era MQTT.fx desktop setups.

Download .dmg

DEB · RPM · x64 · x86

Linux

Packages for Debian, Ubuntu, Fedora, RHEL, and CentOS.

Choose Linux package

01 Explore

Choose an MQTT client

Compare maintained tools for broker testing, MQTT 5, and topic inspection.

Choose an MQTT client

02 Explore

Test a broker connection

Check ports, TLS, credentials, publish, and subscribe behavior in a repeatable order.

Test a broker connection

03 Explore

Move beyond a legacy client

Know when MQTT.fx still helps and when a maintained alternative is the safer choice.

Move beyond a legacy client

When MQTT.fx is not the best fit.

Use MQTTX when you need a modern MQTT client with active releases and broader MQTT 5 coverage. Use MQTT Explorer when browsing topic trees and retained messages matters more than installer familiarity.

If your goal is not a desktop client but a broker endpoint for device tests, start with the MQTT broker guide and then connect with the client you prefer.

Common questions

What is MQTT.fx?

MQTT.fx is a desktop MQTT client used to connect to MQTT brokers, publish test messages, subscribe to topics, and debug IoT connectivity.

Is this the official MQTT.fx website?

No. This is a mirror and practical guide for legacy MQTT.fx downloads. It also points users toward modern MQTT client alternatives.

Which MQTT client should I use today?

Use MQTT.fx for legacy workflows, MQTTX for a modern actively maintained client, and MQTT Explorer when topic-tree inspection is the main task.