# emqx/MQTTX

A Powerful and All-in-One MQTT 5.0 client toolbox for Desktop, CLI and WebSocket.

Repository: https://github.com/emqx/MQTTX
Canonical: https://ross.abutalabs.com/products/mqttx
Homepage: https://mqttx.app
Language: TypeScript
License: Apache-2.0
License Family: permissive
Topics: mqtt-tool, mqtt, mqtt-client, electron-app, electron, iot, iot-application, vue, cross-platform, macos, linux, mqtt-cli, mqtt-client-gui, mqtt-websocket, mqtt5, mqtt-protocol, cli, mqtt-smarthome, mosquitto, emqx
Last push: 2026-08-17T05:45:43+00:00

## Health v2 (maintenance only)
Score: 79/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 43, longevity 100
- inputs: {"age_days": 2658, "days_push": 16, "days_rel": 222, "gap_med": 105.5, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5033, forks 548 (observed 2026-08-28T04:09:08.685976+00:00)

## What it is
MQTTX is an all-in-one, cross-platform MQTT 5.0 client toolbox from EMQ, available as a desktop GUI app, CLI, and web application. It provides a chat-like interface for connecting to MQTT brokers, publishing and subscribing to topics, plus payload codecs, scripting, benchmarking, and IoT data simulation.

## Use cases
- test mqtt broker connections
- debug mqtt pub/sub messages
- benchmark mqtt broker performance
- simulate iot device data with mqtt
- inspect and format mqtt  payloads
- connect to mqtt over websockets
- test mqtt tls and ssl authentication
- run mqtt load tests from the command line

## When to choose
- you need a GUI to interactively test MQTT 5.0/3.1.1/3.1 brokers
- you want a CLI for scripted MQTT testing or benchmarking
- you need payload conversion (Hex, Base64, JSON) and IoT data simulation
- you want a browser-based MQTT client for quick or private deployment

## When to avoid
- you need an embedded MQTT client library for your own application code
- you require a production messaging broker rather than a testing tool
- you need non-MQTT protocols like AMQP or CoAP

## Facets
- artifact type: application
- maturity: active
- function: gui, cli, testing, benchmarking, developer-tools, message-queue
- domain: iot, developer-tools, cross-platform
- platform: windows, browser, cli, cross-platform
- tags: mqtt, mqtt5, mqtt-client, iot-testing, websocket, electron-app, vue, emqx, payload-codec, data-simulation, messaging, macos, linux, electron

## Member repositories
- emqx/MQTTX (main) score 79

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:08.685976+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:17:26.737563+00:00, confidence not recorded.
  - readme: https://github.com/emqx/MQTTX (fetched 2026-08-28T04:09:08.685976+00:00, sha b547235d7bf7)
  - homepage: https://mqttx.app (fetched 2026-08-29T08:58:21.447773+00:00, sha 6c12c39d452b)
  - site_page: https://mqttx.app/features (fetched 2026-08-29T08:58:21.457104+00:00, sha b05486d77764)
  - site_page: https://mqttx.app/docs (fetched 2026-08-29T08:58:21.458853+00:00, sha a5fd96346f9a)
  - site_page: https://mqttx.app/changelogs/v1.13.0 (fetched 2026-08-29T08:58:21.460411+00:00, sha 4c7210e7a12f)
- Data as of 2026-08-30T08:39:29.467469+00:00.