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CLUSTER PUBLISH-SUBSCRIBE-BROKERS · 9 ENTRIES · EARLIEST ENTRY 2024-06-07

MQTT debugging and monitoring clients

This cluster comprises desktop, terminal, and command-line tools for interacting with MQTT and other message brokers, including clients that publish system metrics and utilities for testing and debugging topics. Entry dates are sporadic, with single appearances in 2017, 2022, 2024, 2025 (twice), and 2026, showing no clear trend. The traction leaders are Easy NATS, mqttdemo-python, and emqutiti, all with zero stars, indicating minimal community adoption.

Entry timeline

ENTRY TIMELINE

SEP 2017: 1MAR 2022: 1JUN 2024: 1JAN 2025: 1JUL 2025: 1AUG 2026: 3SEP 2026: 1
SEP 2017SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 5 hand-coded · 4 unlabelled

Operator · 1 hobby · 7 open source · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 9 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Easy NATS0★1 moliveopen sourceDesktop GUI client for messaging servers that lets developers publish and subscribe to topics and manage streams, consumers, and key-value stores.
  2. 02macos-mqtt-bridge1★28 dayslivehobbyDaemon that publishes a Mac's messages, calls, voicemail, and system state to Home Assistant over MQTT and accepts remote controls.
  3. 03mqttdemo-python0★unknownliveExample MQTT client that publishes system statistics like CPU, memory, and disk usage to a broker and subscribes for commands.
  4. 04emqutiti0★5 moliveopen sourceTerminal application for connecting to MQTT brokers to publish and subscribe messages.
  5. 05MQTT X0★8 mostalelivehand-codedopen sourceCross-platform client application for connecting to, publishing to, and subscribing on message brokers to test and debug protocol traffic.
  6. 06MQTT5 Explorer0★1 yrabandonedlivehand-codedopen sourceDesktop client that connects to MQTT5 brokers, letting users publish and subscribe to topics to test and debug protocol-compliant messaging.
  7. 07gtk-chat0★4 yrabandonedlivehand-codedopen sourceDesktop messaging client that connects to the QQ instant messaging protocol through a graphical interface.
  8. 08mqtt-spy0★8 yrabandonedlivehand-codedopen sourceDesktop and command-line utility that helps developers monitor and inspect activity on MQTT topics.
  9. 09mqttdemo-mosquitto0★unknownlivehand-codedopen sourceOpen-source MQTT message broker that routes publish/subscribe messages between sensors, devices, and applications for Internet of Things messaging.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.