mqttfx

Install command:
brew install --cask mqttfx

Name: MQTT.fx

IoT route testing tool

https://www.softblade.de/

Cask JSON API: /api/cask/mqttfx.json

Cask code: mqttfx.rb on GitHub

Current version: 5.9.0

Current version requires: macOS >= 10.11

Versions:

Intel sequoia 5.9.0
sonoma 5.9.0
ventura 5.9.0
monterey 5.9.0
big sur 5.9.0
catalina 5.9.0
mojave 5.9.0
high sierra 5.9.0
sierra 5.9.0
el capitan 5.9.0

Analytics:

Installs (30 days)
mqttfx 14
Installs (90 days)
mqttfx 40
Installs (365 days)
mqttfx 186
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