Node-RED
Node-RED is a flow-based programming tool for wiring together hardware devices, APIs, and online services in a visual, low-code environment. It provides a browser-based editor where users can create applications by dragging and dropping nodes onto a canvas and connecting them to define data flows. It is built on Node.js and is commonly used for Internet of Things (IoT) projects, automation, and rapid prototyping.
Developers should learn Node-RED when working on IoT applications, home automation, or data integration tasks that require connecting disparate systems without extensive coding. It is ideal for prototyping and building workflows quickly, as it simplifies complex integrations through its visual interface and extensive library of pre-built nodes. Use cases include sensor data processing, API mashups, and real-time monitoring dashboards.