Node-RED is a flow-based development tool for visual programming developed originally by IBM for wiring together
hardware devices, APIs and online services as part of the Internet of Things.
Node-RED provides a web browser-based flow editor, which can be used to create JavaScript functions.
Elements of applications can be saved or shared for re-use. The runtime is built on Node.js.
The flows created in Node-RED are stored using JSON. Since version 0.14, MQTT nodes can make properly
configured TLS connections.