For integrators, developers and others using OPC, MatrikonOPC Explorer is a free utility used to help test and troubleshoot OPC servers and connections. Unlike other, cumbersome OPC clients, the MatrikonOPC Explorer utility is easy to install and simple to use - and it's free! MatrikonOPC Explorer is a full featured OPC client designed to help during installation, testing, and configuration of OPC compliant servers. Also included is the MatrikonOPC Simulation Server; an OPC-compliant server that provides simulated data values to an OPC client for testing client functionality. MatrikonOPC Explorer will tell the user which OPC interfaces are supported in their OPC Server. This will include DA, HDA, Alarms and Events (A&E) and OPC Security. With the addition of OPC Security, users will now be able to securely log in to access data on their OPC server.