We are releasing QuickOPC version 5.31 today, with two key improvements.
New browsing controls (for OPC Classic and OPC UA) allow you to integrate OPC browsing right on your forms. Unlike with the browsing dialogs, you have full freedom in creating your own visual appearance and behavior of the form.
QuickOPC.NET now directly supports OPC XML-DA Specification Version 1.01. What's even better, there are no new components for this - the XML-DA support is seamlessly integrated with OPC Data Access. You can work with OPC XML-DA servers just as with COM-based OPC Data Access servers, simply by specifying the server's URL in place of the usual machine name and server class (ProgID).