OPC Test Client
Download of OPC Test Client 220.127.116.11 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free program is an intellectual property of OPC Training Institute.
The software is included in Internet & Network Tools. The most popular versions of the OPC Test Client 17.4, 2.3 and 1.9. We recommend checking the downloaded files with any free antivirus. The common filenames for the program's installer are opctest.exe, TMWOpcClient.exe or XpOpcTestClient.exe etc.
From the developer:
The OPC Test Client from Prosys will help troubleshoot OPC connections and test OPC servers. You can read and write data, browse servers and export and import address space. OPC Test Client is lightweight, fast and easy to use. The client runs on all Windows operating systems.
You may want to check out more software, such as OPC UA Sample Applications, Matrikon OPC Server for Simulation or Automated Solutions Modbus/TCP Master OPC Server, which might be similar to OPC Test Client.