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MQTT5 ExplorerMQTT CLI
Free

Free and open source under the GPL-3.0 licence.

 Free

Free and open source under the Apache 2.0 licence, backed by HiveMQ.

Linux Windows, Command line
  • Aims to support all MQTT 5 features
  • Works with any MQTT broker
  • Full MQTT 5.0 and 3.1.1 feature support
  • Interactive shell with syntax highlighting and command history
  • Small project with a limited community
  • Release activity is not clear from the repository page
  • Command line only, with no graphical interface
  • Some commands only apply to HiveMQ brokers
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-only License: Apache-2.0
No account needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 1, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.