MQTT Explorer
A graphical MQTT client showing broker topics as a searchable hierarchy.
Useful for debugging topic traffic and integrating IoT devices.
Per-topic history, numeric plots and publishing expose the messages behind a device workflow.
Keep in mind: Publishing or deleting retained topics can affect live devices. Restrict subscriptions on a busy broker; the website beta version differs from the captured 0.3.5 store build.
Inside the app
Official product images
What you can do
- Topic tree and activity history
- Message publishing and retained-topic deletion
- Search, numeric charts and client certificates
Good for
- Developers inspecting a broker they are authorized to use.
Consider alternatives for
- People expecting a hosted MQTT broker or a read-only monitoring guarantee.
Limitations & considerations
- Captured minimum: macOS 10.10.0.
- Publishing or deleting retained topics can affect live devices. Restrict subscriptions on a busy broker; the website beta version differs from the captured 0.3.5 store build.
Privacy & permissions
Broker credentials and message payloads can contain secrets or household telemetry. The site says app telemetry was removed; confirm your build and use an appropriately secured broker connection.
Sources & review notes Updated Nov 15, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, release notes, download price and compatibility metadata captured 2026-11-02.
- Official developer disclosure
Full cached official text read; captured 2026-11-12. Edition, regional fee and platform scopes retained.
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