node-opcua/node-opcua
Unlocking the Full Potential of OPC UA with Typescript and NodeJS - http://node-opcua.github.io/ observed · 2026-08-28
Health v2 · maintenance only
99/100
- Activity 99
- Release rhythm 98
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 9.5
- age_days: 4606
- days_rel: 13
- days_push: 7
- n_releases_24m: 39
Adoption not part of the score
1654 stars · 517 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
node-opcua is a full OPC UA (IEC 62541) protocol stack for Node.js and the browser, written in TypeScript. It provides client, server, discovery, and aggregation components with built-in security policies, encryption, and certificate management.
Use cases
- build an OPC UA server to expose industrial sensor data
- connect to a PLC or SCADA system as an OPC UA client
- read and write OPC UA nodes from a Node.js application
- implement secure encrypted industrial communication with certificates
- monitor manufacturing equipment data in an Industry 4.0 setup
- browse an OPC UA address space and subscribe to data changes
- run an OPC UA client in the browser
When to choose
- you need a complete, production-tested OPC UA stack in JavaScript/TypeScript
- you are building industrial automation, IIoT, or M2M integrations on Node.js
- you need client and server implementations with full security policy support
- you want cross-platform deployment including Windows, Linux, macOS, and browser
When to avoid
- your devices use Modbus, MQTT, or other non-OPC-UA protocols
- you need a lightweight embedded OPC UA stack for microcontrollers rather than Node.js
- your project does not run on Node.js 20 or above
Facets
library · maturity stable
sdk networking cryptography security iot developer-tools apis cross-platform browser windows opc-ua opcua industrial-automation iiot m2m industry-4 typescript iec-62541 client-server nodejs linux macos
1 source
- readme: https://github.com/node-opcua/node-opcua · fetched 2026-08-28 · 9d25f0cc614a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| node-opcua/node-opcua | main | 99 |
For agents
markdown · JSON · MCP: product_card(name="node-opcua/node-opcua")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem