Node-Red is the original.
replyN8n and its clones are attempts to copy and commercialize it with a closed-source license.
Node-RED is great for IoT/edge/data flows. Sim is built specifically for AI agents—native LLM support, tool-use control, structured outputs, token-level observability, etc.
replyThere is nothing in Node-Red that is specific to IoT.
replyafaik, there are actually a ton of unique IoT integrations that node-red has. a majority of their nodes/flows have accompanying physical devices and sensors
replyNo, you're misremembering.
replyThe only weird integration that Node-Red has is MQTT, but that isn't really anything IoT-specific, just a niche message broker.