SmartInspect Professional v3.3.3.72
SmartInspect is an advanced .NET logging, Java logging and Delphi logging tool for debugging and monitoring software applications. It helps you identify bugs, find solutions to user-reported issues and gives you a precise picture of how your software performs...
Here is a component for reading from OPC Server:
http://www.filesonic.com/file/846380544/prOpckit_full115b.rar
but this an old one (Delphi 7), if anyone have a newer ver. for XE please Share.