Neuron

Judgement

What it is

Complete system

What it does

An industrial connectivity server that reads dozens of protocols such as Modbus, OPC UA and Siemens S7 at the edge and publishes the data over MQTT.

Adopt it when

You need a lightweight edge gateway to move PLC data into MQTT or EMQX.

Watch out

Many protocol drivers are only in EMQ's commercial edition; the open version covers a subset.

Ready for

Production-ready

Runs as

Self-hosted server

Built with

C and MQTT

How established

Established: started 5 years ago, latest release 2.15.0.

What the license allows

You can use it inside a product you sell; changes you make to its own files must be shared.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Compare Neuron

Built from

Follow it down: Neuron → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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