Industrial-Grade OPC UA Platform & Middleware

A complete, modern and production‑ready OPC UA implementation for industrial automation, IIoT, training and research.

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What Is OpenOpcUa?

OpenOpcUa is a robust, multi-platform OPC UA implementation designed to accelerate your industrial interoperability, data connectivity, and digital transformation. Originally launched in 2009 by a consortium led by industry experts, OpenOpcUa has become a proven foundation for industrial OPC UA applications worldwide.

OpenOpcUa is more than just software — it’s a trusted OPC UA technology platform that enables developers, integrators, and industrial organizations to build high-performance OPC UA clients and servers with confidence. Based on a professional, C/C++ codebase, it supports Windows, Linux, VxWorks and other target platforms.

Key Features:

Core Server

Industrial‑grade server engine designed for high performance and stability.

Client Library

Modern client stack with async reads, reconnection logic, and robust error handling.

VPI / VFI Ecosystem

Connect S7, Modbus, EIP, MQTT, OPC UA Client, archive to CSV, PostgreSQL, SQL Server.

Advanced OPC UA Features

Historical Access, Aggregates, HA, Redundancy, Secure Channels, Bulk Writes.

Why OPC UA Matters

OPC Unified Architecture (OPC UA, IEC 62541) is the de-facto industry standard for secure, platform-agnostic industrial communication. It enables safe and structured data exchange between machines, control systems, and enterprise applications — essential for Industry 4.0, IIoT, and smart manufacturing initiatives.

OPC UA combines secure communication, rich information modelling, and cross-platform interoperability, helping businesses unify OT and IT environments without vendor lock-in.

Built by Experts — Backed by Industry

OpenOpcUa is spearheaded by the team at 4CE Industry — a long-standing OPC Foundation member and recognized authority in OPC UA technologies. With over 25 years of experience, 4CE Industry delivers consulting, modelling, development and certification services to help organizations accelerate their OPC UA adoption and industrial data strategies.

Use Cases

Whether you’re implementing OPC UA for:

  • Data integration across heterogeneous systems
  • IIoT and edge-to-cloud connectivity
  • Standardized information modelling
  • Legacy system modernization
  • High-availability industrial communication

OpenOpcUa provides a flexible and extensible platform that scales with your business needs.

Get Involved

OpenOpcUa is supported by a global community of developers, integrators and industrial partners. Join the project, access documentation, and start building with a proven OPC UA technology stack.

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OpenOpcUa — Accelerating Industrial Connectivity & Interoperability. Certified OPC UA middleware trusted across industries.

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