I built an open-source MQTT Visualisation tool
It was primarily focused on a couple of specific niche use-cases, and the UX can be a little janky, but I'd love some feedback. (If you find that connecting to a very busy topic causes lag, try setting the 'drop retained messages' toggle in the 'Filter' tab.)
It's also entirely open-source and MIT licensed, so feel free to grab it for your own desires.
u/secretdark — 2 days ago