mqttx ☆
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Description:
Cross-platform MQTT 5.0 Desktop Client
Type: Cask  |  Latest Version: 1.13.0@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @EMQTech  |  formulae.brew.sh
Category: Developer tools
Tags: mqtt iot messaging debugging desktop-client
Install: brew install --cask mqttx
About:
MQTTX is a sleek, cross-platform desktop client designed for MQTT 5.0 protocol testing and debugging. It offers an intuitive user interface for managing connections, publishing messages, and subscribing to topics in real-time. Its primary value is simplifying the development and troubleshooting of IoT and messaging applications.
Key Features:
  • Cross-platform support (macOS, Windows, Linux)
  • MQTT 5.0 and 3.1.1 protocol support
  • Visual payload formatting and syntax highlighting
  • Multiple connection management and simulation tools
Use Cases:
  • Developing and debugging IoT device communication
  • Testing MQTT broker configurations and message flows
  • Educational tool for learning MQTT protocol basics
Alternatives:
  • MQTTool – iOS-focused mobile client, not cross-platform desktop
  • HiveMQ MQTT Client – Web-based client, often used for quick browser-based testing
Version History
Detected Version Rev Change Commit
Jan 23, 2026 1:31pm 1.13.0 0 VERSION_BUMP 5ae513a0
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