mqttx

Install command: 
brew install --cask mqttx

Name: MQTTX

Cross-platform MQTT 5.0 Desktop Client

https://mqttx.app/

Development: Pull requests

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

Cask code: mqttx.rb on GitHub

Current version: 1.13.0

Requirements: macOS >= 12

Versions:

Intel tahoe 1.13.0
sequoia 1.13.0
sonoma 1.13.0
ventura 1.13.0
monterey 1.13.0

Analytics:

Installs (30 days)
mqttx 302
Installs (90 days)
mqttx 1,036
Installs (365 days)
mqttx 4,091