Product

Specs

Notes

Supplier

DA
AE
Security

Free and easy to use OPC client. Supports OPC DA 2.0 and 1.0, and A&E. The only OPC Client we have found that supports the OPC Security 1.0 specification.

Matrikon OPC

DA
HDA

Free tool for verifying historical data through HDA, testing HDA servers, and troubleshooting connectivity to HDA servers.

Matrikon OPC

DA
AE
Security

Handy mobile edition of the standard Matrikon OPC Explorer that is capable of being moved from PC to PC without being installed on an actual hard drive.

Matrikon OPC

DA
XML DA

DA and XML-DA OPC client, including basic trend charts. Now supports DA 3 and XML-DA 1.01. Free for non-commercial use.

Kassl

DA

OPC DA 2.0 (and 1.0) browser and client utilities. Data Access Client subscribes to the first 100 server tags it finds and continuously displays updates of their values.

PowerOPC

DA

Free GUI clients offering simultaneous connection to multiple servers.

Integration Objects

DA

Demo version of a Data Access 2.0 diagnostic client. Allows live linking to other applications (e.g. Microsoft Excel) via a simple Copy and Paste operation, plus bridging between two servers.

Nautsilus

DA

OPC test client, originally intended for checking compatibility of servers with the company's PID tuning product.

ExperTune

DA

Free utility to help test and troubleshoot OPC servers and connections.

CommServer

DA

Visualization software for buildings and industrial plants. Free tester version has no time restriction, but is limited to 5 pages and 5 elements per page.

NETxAutomation

DA

Simple DA client with source, demonstrating capabilities of the Prosys Sentrol rapid development framework.

Prosys

DA

Free DA client based on the same company's Local IO product. Includes facilities for buffering, scaling and masking of tag values. Requires .NET Framework 1.1.

Industrial DOT NET

DA

Powerful and easy to use test client. Connection Wizard allows a server connection with a group and multiple items to be established with just five mouse clicks.

National Instruments

Product

Specs

Notes

Supplier

DA
HDA
AE

'Thin' OPC client which bridges between two OPC servers, taking data from one and writing it directly to the other. Now supports OPC DA 3.0, in addition to DA 2.0,1.0, HDA, AE

Matrikon OPC

DA
OPC AE

Enables easy implementation of redundancy in OPC-based systems, being designed for applications that must use redundant hardware and/or software to achieve a high degree of communication reliability.

Matrikon OPC

DA
OPC AE

Matrikon OPC EdgeCalc addresses the need for an industrial analytics tool that allows control automation professionals to work with all their 3rd-party data sources to perform math calculations, logic evaluations, and to put the results to immediate use in the control system and throughout the enterprise.

Matrikon OPC

DA

Time-limited version of an OPC client/server product that allows bridging between OPC servers, between PLCs and between OPC servers and PLCs. Free licensing for non-production use is available.

Cyberlogic

DA

Time-limited demo of DA 2 and DA 3 server and client combination that supports OPC tunnelling, aggregation, and bridging. Also offers TCP and DDE client and server, plus scripted read/write connections to ODBC databases and MATLAB.

Cogent Real-Time Systems

DA

Time-limited demo version of a Visual Basic application for bidirectional data transfer between databases and OPC servers. Source available at extra cost.

Open Automation Software

DA

Enables data transfer between two OPC servers using only point and click or drag/drop configuration. Provides support for data transformations. Trial version is functionally unrestricted, but limited to 30 days use. See also products from Matrikon.

Northern Dynamic

Product

Specs

Notes

Supplier

DA
HDA

Free tool for verifying historical data through HDA, testing HDA servers, and troubleshooting connectivity to HDA servers.

Matrikon OPC

HDA

Free tool to transform your OPC HDA data into knowledge that can be used to improve processes and increase operational efficiency.

Matrikon OPC

DA

OPC client which enables any ODBC-compliant database to exchange process data with an OPC server, using standard SQL queries.

Matrikon OPC

DA
HDA

Process Historian that collects and archives time-series process data, with reporting, analysis, and viewing facilities. Efficiently stores an unlimited amount of data and an unlimited number of tags.

Matrikon OPC

HDA

Evaluation versions of Canary Labs' trending and logging utilities. Updated versions include OPC Historical Data Access support: HDA server in Trend Historian, client in Trend Link.

Canary Labs

HDA

HDA client providing graphical visualization of historical data. HDA server access ceases after 30 minutes in demo version.

Bee Computing

Product

Specs

Notes

Supplier

DA
AE
Security

Simple and Popular free OPC client used for testing AE Servers. Comprehensive features, very easy to use. Also supports the OPC Security 1.0 specification.

Matrikon OPC

DA

Client software for alarm notification and remote control, using a variety of wired, wireless and mobile technologies. Demo download runs for one hour before requiring restart, but otherwise unrestricted.

Control See

Product

Specs

Notes

Supplier

DA
HDA

Allows Microsoft Excel to be used as a reporting tool for data pulled from DA and HDA servers. 30-day trial version.

Matrikon Analytics

DA

Greatly simplifies the task of importing live OPC data into Office applications (e.g. Excel) and ODBC databases. Free time-limited download available for evaluation.

Rensen Information Services

DA

Provides an easy way to access real-time data from any OPC server via Microsoft Excel. Free trial download is available.

Resolvica

Product

Specs

Notes

Supplier

DA

Our own simple console client, written in Borland Delphi. Includes Delphi conversions of all published custom OPC interfaces.

OPC Programmers' Connection

DA

A simple but effective OPC Browser utility is provided with Northern Dynamic's toolkit download.

Northern Dynamic

DA

Gauge, Switch and Vessel controls are available, allowing connection to any OPC data source.

ICONICS

DA

Demo version of an ActiveX control which aims to simplify Data Access client development.

4CE Industry

Product

Specs

Notes

Supplier

DA
HDA
AE
Security

Fully featured Simulation Server download (see servers) includes powerful OPC Explorer client.

Matrikon OPC

DA

Evaluation version of an OPC server which also includes client functionality. See servers for more details.

IOServer

DA

Time-limited versions of servers that include the Cyberlogic OPC Client application. Free licensing for non-production use is available. See servers for more details.

Cyberlogic

DA

A simple GUI client, supplied with an in-process server (see servers) for testing.

SST

Product

Specs

Notes

Supplier

DA
HDA

Free tool for verifying OPC connectivity, finding common OPC problem areas and backup important OPC-related files.

Matrikon OPC

DA

Powerful console client, supporting a full range of OPC DA operations. Great flexibility through ability to use pipes, plus CSV files as input/output.

OpenOPC

DA

Advosol offers a number of test and sample clients, usually as part of a toolkit or component evaluation (requires registration). Supported specifications include DA 2, DA 3, AE, HDA and XML-DA.

Advosol

DA

A range of easy freeware clients for DA, AE and HDA, plus an XML-DA test client.

Kassl

DA

A simple console client, including source. Supports OPC Data Access 2.

SST

DA

Client for diagnostics and monitoring. Supports local and remote connections to DA and AE servers, and includes useful features such as a log of OPC calls. Slightly marred by an HMI which is counter-intuitive in parts.

ICONICS

DA

ClntDemo2.zip usefully displays all OPC interface calls in a logging window. Also available are demo clients for Alarms & Events and Historical Data Access.

WinTECH Software