From Data Layers:
OPCWare Client Developer is a suite of ActiveX Controls for Rapid OPC (OLE for Process Control) Data Access Client Development. This ActiveX control suite includes four controls that are used to browse and connect to OPC servers, and to bind the OPC data to user controls. Each component is an in-process ActiveX Server component, bringing the power and flexibility of the OPC Data Access 2.0 Automation Interface to automation clients, without the need to learn or use the OPC automation object model, and without dealing directly with COM objects, collections or handles! This suite of ActiveX components enables simple and complex reading and writing of OPC data to/from HMI applications, databases, and spreadsheets.