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    • Smart IoT Highway
      IT-OT-IIoT Integration
      Seamlessly integrate your IT and OT in a secure way
      Augmented AI
      Leverage predictive analytics, ML/AI models combined with logic rules, workflows and fault propagation
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      Configure web-based SCADA and dashboards
      SIOTH® Related Products
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Logo
  • SIOTH® Platform
    • Smart IoT Highway
      IT-OT-IIoT IntegrationAugmented AIVisualization & Monitoring
      SIOTH® Related Products
      SIOTH® SCADAMQTT Universal BrokerOPC UA Universal Server
      See it in action
      Download NowWatch Demo Video
  • OPC Products
    • Featured Products
      OPC UA WrapperOPCNet Broker DA HDA AE OPC UA Universal ServerOPC Easy ArchiverOPC UA Proxy
      OPC Servers
      OPC Server for ModbusOPC Server for DatabasesOPC UA Server for DatabasesOPC Server for SNMP OPC UA Server Simulator - Full Edition
      OPC Development Kits
      OPC UA Client ToolkitOPC UA Sever ToolkitOPC .NET Client Toolkit
  • Resources
    • Documentation
      FAQWhite PapersSuccess StoriesDocumentation
      Learning
      OPC DemosSIOTH DemosWebinars
  • Contact
    • Contact Integration Objects
      Ask Us a QuestionSubmit a TicketSubmit Your Feedback
      About Us
      About Us
Login
Follow Us
  • SIOTH® Platform
    • Smart IoT Highway
      IT-OT-IIoT Integration
      Seamlessly integrate your IT and OT in a secure way
      Augmented AI
      Leverage predictive analytics, ML/AI models combined with logic rules, workflows and fault propagation
      Visualization & Monitoring
      Configure web-based SCADA and dashboards
      SIOTH® Related Products
      SIOTH® SCADA
      Web SCADA enabling monitoring in minutes
      MQTT Universal Broker
      Unify Your OT Data with MQTT
      OPC UA Universal Server
      Unify Your OT Data with OPC UA
      See it in action
      Download Now
      Download your free SIOTH trial and start configuring your data flows
      Watch Demo Video
      Configure the OPC UA Universal Server, built in minutes using SIOTH
  • OPC Products
    • Featured Products
      OPC UA Wrapper
      OPCNet Broker DA HDA AE
      OPC UA Universal Server
      OPC Easy Archiver
      OPC UA Proxy
      OPC Servers
      OPC Server for Modbus
      OPC Server for Databases
      OPC UA Server for Databases
      OPC Server for SNMP
      OPC UA Server Simulator - Full Edition
      OPC Development Kits
      OPC UA Client Toolkit
      OPC UA Sever Toolkit
      OPC .NET Client Toolkit
      Browse All OPC Products
      Benefit from free trial versions of OPC products and access free productsGet StartedOPC Free Tools
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OPC UA Client

The Free OPC UA Client Built for Your Connectivity & Interoperability Testing

Browse, monitor, and validate any OPC UA server - completely free to use, free to distribute

OPC UA Client Overview

Why use the OPC UA Client ?

  • Free OPC UA client tool
  • Essential tool for developers, system integrators, and automation professionals
  • Used to test OPC UA communications
  • Enables testing, exploration, and troubleshooting of OPC UA server connections
  • Supports OPC UA information models
  • Supports OPC UA security features
  • Provides access to Alarms, and Conditions
  • Provides access to real-time data
  • Provides access to historical data
opc-architecture
Watch Demo Video

OPC UA Client Features

Connectivity

  • Local and Remote Discovery: Automatically discover available OPC UA servers on local networks and remote locations 
  • Secure Communication: Full support for OPC UA security mechanisms including encryption and authentication 
  • Support of None, Basic128RSA15, Basic256 and Basic256Sha256 security policies
  • Certificate Management: Built-in certificate handling for secure server connections 
  • Multiple Server Support: Connect to and manage multiple OPC UA servers simultaneously 

Data Access and Monitoring

  • Address Space Browsing: Navigate complete server data structures with hierarchical tree view 
  • Real-Time Data Monitoring: Live data updates with configurable refresh rates 
  • Historical Data Access: Retrieve and analyze historical data records with flexible date time-range queries 
  • Data Type Support: Handle all OPC UA data types including complex structures and arrays 

Management

  • Create and manage data change subscriptions for efficient monitoring 
  • Method Invocation: Execute OPC UA server methods with parameter input and output handling 
  • Alarm and Event Handling: Comprehensive alarm condition monitoring and event notification 
  • Intuitive Interface: Professional-grade GUI designed for both novice and expert users 

Retrieve of alarms and conditions

Frequently Asked Questions

Yes, our OPC UA Client is completely free with no limitations on usage time, number of connections, or features. It is designed to support the OPC UA community and help professionals test and validate their OPC UA implementations. 

The client supports all standard OPC UA information models including Data Access, Alarms & Conditions, and Historical Access. It also works with custom information models and companion specifications for specific industries. 

While the tool is primarily designed for testing and development, its robust features make it suitable for temporary monitoring and troubleshooting in production environments. For permanent production monitoring, consider our commercial SIOTH and OPC UA products. 

The client is designed to work with any OPC UA server that supports OPC Foundation specifications. It automatically adapts to different server configurations and information models, ensuring broad compatibility. 

The client supports all OPC UA security modes including None, Sign, and Encrypt, along with various security policies. It includes built-in certificate management and supports both anonymous and username/password authentication.

Resources & Documentation

OPC UA Client Resources

Product Datasheet

Comprehensive technical specifications and features overview

User Guide

Step-by-step installation and configuration guide

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