Eclipse IoT is an interesting I-IoT framework based on open source technologies for Industry 4.0. One of the most interesting things about Eclipse IoT is that it has support for CoAP, DTLS, IEC 61499, OMA LWM2M, MQTT, OGC SensorThings API, oneM2M, OPC UA, and PPMP:

Eclipse IoT (https://iot.eclipse.org/projects/) provides two interesting mechanisms:

• Eclipse Hono: The adaptor gateway which translates MQTT, CoAP, and HTTP to an AMQP message
• Eclipse Ditto: Supports an analytic framework for a Digital Twin

At its current stage of maturity, Eclipse IoT is not so robust, but it is a very promising solution for the future.