Kafka Failure Radar

Kafka Failure Radar is a free, lightweight dashboard that shows where a Kafka incident started: consumer lag with retry topic and dead-letter signals on one timeline, broker health, disk capacity and what to look at first.

It runs as one container on your own machine, or on a closed network with no internet. It reads offsets and cluster metadata, never message contents, and sends nothing anywhere. It is free to use and closed-source.