# emqx/neuron

Open source industrial connectivity server

Repository: https://github.com/emqx/neuron
Canonical: https://ross.abutalabs.com/products/emqx-neuron
Homepage: https://www.emqx.com/en/products/emqx-neuron
Language: C
License: LGPL-3.0
License Family: copyleft
Topics: iot, plc, c, mqtt, modbus, opcua, siemens-s7, omron, mitsubishi, dtu, industrial-iot, manufacturing, iot-middleware, industry-40, iiot, iot-edge
Last push: 2026-08-21T03:46:38+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 87, longevity 100
- inputs: {"age_days": 1901, "days_push": 12, "days_rel": 91, "gap_med": 18.5, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1390, forks 309 (observed 2026-08-28T04:04:35.606445+00:00)

## What it is
Neuron is an open-source industrial IoT connectivity server written in C that bridges factory-floor devices (PLCs, sensors, meters) with modern data platforms. It supports many industrial protocols such as Modbus, OPC UA, and Ethernet/IP, converts them to MQTT, and offers lightweight edge deployment with pluggable, hot-swappable modules.

## Use cases
- connect PLCs to an MQTT broker
- convert Modbus data to MQTT
- collect sensor data from factory floor
- bridge industrial protocols to cloud platforms
- stream SCADA data to MES or ERP systems
- run edge data processing on industrial gateways
- integrate Siemens S7 or OPC UA devices with IIoT platforms

## When to choose
- you need to connect heterogeneous industrial devices and protocols to MQTT
- you want a lightweight edge gateway under 10MB for ARM/x86/RISC-V hardware
- you need hot-pluggable protocol adapters and northbound Sparkplug B integration
- you want open-source core with optional commercial support

## When to avoid
- you need a full-featured web dashboard or extended protocol set only available in the commercial NeuronEX edition
- you need cloud-native connectors to AWS, Azure, or Google Cloud out of the box
- your use case is general-purpose IoT without industrial protocols

## Facets
- artifact type: service
- maturity: active
- function: iot, message-queue, streaming, middleware
- domain: iot
- platform: cross-platform
- tags: industrial-iot, modbus, opcua, plc, mqtt-bridge, edge-computing, protocol-converter, sparkplug-b, iiot-gateway, industrial-automation, automation, messaging, linux, docker, arm, x86

## Member repositories
- emqx/neuron (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:35.606445+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:39:38.629782+00:00, confidence not recorded.
  - readme: https://github.com/emqx/neuron (fetched 2026-08-28T04:04:35.606445+00:00, sha 18cb448235b6)
  - homepage: https://www.emqx.com/en/products/emqx-neuron (fetched 2026-08-29T11:54:56.172567+00:00, sha 1d270677b25d)
  - site_page: https://docs.emqx.com/en/neuronex/latest/streaming-processing/rules.html (fetched 2026-08-29T11:54:56.178985+00:00, sha 58afbea90b66)
  - site_page: https://docs.emqx.com/en/neuronex/latest/streaming-processing/sink/sink.html (fetched 2026-08-29T11:54:56.182683+00:00, sha d00d0a933c19)
  - site_page: https://docs.emqx.com/en/neuronex/latest/application/nodered.html (fetched 2026-08-29T11:54:56.186673+00:00, sha 000f306b39c1)
  - site_page: https://docs.emqx.com/en (fetched 2026-08-29T11:54:56.189541+00:00, sha 51628e92a60e)
  - site_page: https://www.emqx.com/en/blog/the-easiest-guide-to-getting-started-with-mqtt (fetched 2026-08-29T11:54:56.192295+00:00, sha a997c98e4922)
  - site_page: https://www.emqx.com/en/about (fetched 2026-08-29T11:54:56.195417+00:00, sha c7b8e517fbb4)
  - site_page: https://www.emqx.com/en/pricing (fetched 2026-08-29T11:54:56.175454+00:00, sha 2b07d8f79861)
- Data as of 2026-08-30T08:39:29.467469+00:00.