node-RED

Node-RED is a programming tool for wiring together hardware devices, APIs and online services. It provides a browser-based editor that makes it easier to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click. Flows can then be deployed to the runtime in a single-click, and JavaScript functions can be created within the editor using a rich text editor, and flows created in Node-RED are stored using JSON which can be imported and exported for sharing with others. It is free to use and open source under an Apache 2.0 license.