Sample projects for C#, VB.NET and C++/CLI to guide developers using our OPC UA .NET SDKs.

List of commercial and open source OPC UA Clients

OPC-UA client UI

EdgeLite: 开源边缘AI网关，13种工业协议+ONNX推理引擎，传感器/视觉AI双确认。Python，10分钟Docker部署。

A PHP library that talks OPC UA binary protocol over TCP. It handles the full stack — transport, encoding, secure channels, sessions, crypto — so you can connect to any OPC UA server straight from PHP, without shelling out to C/C++ libraries.

OPC-UA Ruby Bindings (open62541)

OPC client and subscriber code examples using QuickOPC in Object Pascal (Delphi) for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC UA client integration for Laravel with Facade, named connections, and an optional persistent session manager daemon.

Open-source industrial OPC UA platform for realtime monitoring and visualization.

OPC client, server and subscriber code examples in C#, for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in VB6 for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

This node-red package allows to manage OPC UA communication like read, write, subscription, ... and expose its own server

FactoryTalk® Optix™ can support custom ID when publishing OPC/UA tags, this can be exposed by NodeId, Path, String or integers to achieve best compatibility with OPC/UA clients

An OPC-UA command-line (CLI) client able to read values from an OPC UA server

Read Modbus, OPC Server, Contrologix and XML values directly from terminal

A web-based render viewer of an OPC UA CTT test run

OPC client and subscriber code examples using QuickOPC in PowerShell for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

Quick-start examples for integrating PLCcom OPC UA SDK, a .NET SDK for easy and efficient OPC UA client communication.

Teacup client/server OPC UA support