opcua (FreeOpcUa Python OPC UA library)
OPC UA library for python >= 3.10 observed · 2026-08-28
Health v2 · maintenance only
92/100
- Activity 99
- Release rhythm 78
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 61.0
- age_days: 2953
- days_rel: 65
- days_push: 9
- n_releases_24m: 7
Adoption not part of the score
1468 stars · 452 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A pure Python implementation of the OPC-UA (IEC 62541) protocol providing both client and server libraries with high-level and low-level APIs. This original synchronous library is now deprecated in favor of its successor, opcua-asyncio (asyncua), which offers an asyncio-based implementation with a sync wrapper.
Use cases
- connect to an OPC-UA server from Python
- build a Python OPC-UA server for industrial equipment
- read and write PLC tags over OPC-UA
- integrate SCADA or industrial automation data with Python
- test OPC-UA endpoints with a lightweight client
- browse OPC-UA address space programmatically
When to choose
- maintaining legacy Python 2 or synchronous codebases that already use the opcua package
- you need a pure Python OPC-UA stack with no native dependencies
- quick prototyping of OPC-UA clients or servers
When to avoid
- starting a new project - use opcua-asyncio (asyncua) instead
- you need actively developed features or architectural improvements
- you need guaranteed long-term bug fixes or security patches
Facets
library · maturity maintenance
sdk networking concurrency iot developer-tools apis python cross-platform windows opc-ua iec-62541 industrial-protocols client-server deprecated-in-favor-of-asyncua pure-python industrial-automation linux macos
2 sources
- readme: https://github.com/FreeOpcUa/opcua-asyncio · fetched 2026-08-28 · cf40df3853a3
- homepage: http://freeopcua.github.io/ · fetched 2026-08-29 · 269a019bd3fb
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| FreeOpcUa/opcua-asyncio | main | 92 |
| FreeOpcUa/python-opcua | mirror | 32 |
For agents
markdown · JSON · MCP: product_card(name="FreeOpcUa/opcua-asyncio")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem