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Software · Raspberry Pi & electronics

MQTT X

Your All-in-One MQTT Client Toolbox.

  • Completely free
  • Windows, macOS and Linux
  • Open source
  • No account

Overview

Features described in its GitHub repository and on its official website: command-line use.

Services and protocols mentioned: MQTT.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “A powerful and easy-to-use MQTT 5.0 command line tool.” — official website, 10 November 2026

At a glance

MQTT X is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (Apache-2.0) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • No account needed
  • Commercial use allowed

About

MQTT X is a cross-platform MQTT 5.0 client tool open sourced by EMQ, which can run on macOS, Linux and Windows, and supports formatting MQTT payload. MQTT X simplifies the operation logic of the page with the help of chatting software. The user can quickly create a connection to save and establish multiple connection clients at the same time. It is convenient for the user to quickly test the connection of MQTT/TCP、MQTT/TLS, MQTT/WebSocket Publish / Subscribe functions and other features.

Description from Flathub — AppStream (Flathub)

Sources and checks

  • Facts collected from Unspecified source (platforms) —
  • Facts collected from Official plan pages (pricing, licence, terms) (commercial use) —
  • Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Facts collected from Winget (Windows Package Manager) (credit card, account, source code, publisher, licence, free status, platforms, commercial use, version) —
  • Last technical check: 7 November 2026
  • Description from Flathub — AppStream (Flathub)

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