Six Sparkplug B reference stacks in six languages, Eclipse Tahu (Java and JavaScript), pysparkplug, SparkplugNet, srad and sparkplughost, as edge nodes and host applications on Mosquitto, HiveMQ CE, EMQX and NanoMQ.
The README on GitHub has the full feature list, examples and changelog.
Sparkplug B 3.0.0 over MQTT for Go: edge node, primary host application and application roles, with birth and death certificates, primary host awareness, server walking, aliases, sequence checks and the full typed metric codec.
go get github.com/otfabric/go-sparkplugbWatch and decode Sparkplug B traffic on a broker, publish typed metrics, encode and decode payloads, or simulate an edge node, a primary host application or an application.