A simple tool for mqtt management, you can use as firefox-addon or deploy anywhere
https://addons.mozilla.org/en-US/firefox/addon/mqtt-ez/
git clone https://github.com/paulocanedo/mqtt-ez.git
cd mqtt-ez
npm install
npm run build
your compiled files will be in dist folder.
if you want to run the addon for firefox, please first install web-ext.
npm install --global web-ext
and then open dist folder to run the addon:
cd dist
web-ext run