Eclipse Hono and ThingsBoard both address IoT device connectivity, but they solve different layers of the stack. Hono focuses purely on protocol abstraction and northbound APIs, while ThingsBoard is a full IoT platform with built-in rule engine, dashboards and device management.
Both are open-source platforms for connecting factory devices and visualizing data, but they target different users. ThingsBoard is a general-purpose IoT platform with multi-tenancy for service providers. United Manufacturing Hub is manufacturing-specific with built-in OEE, Unified Namespace, and Kafka-based data infrastructure for plant operations.
Rapid SCADA and ThingsBoard compete in the open-source IoT platform and SCADA space, both supporting MQTT and providing visualization capabilities.