V-Control Designer is software that is used to create Graphical (touch) User Interfaces for V‑Control.It runs on Windows.
Please read this Article for detailed information: https://v-control.com/wiki/doku.php/v-control_designer
It communicates with the Remote Panel Server via TCP, and up to 5 V‑Control Designer instances can have simultaneous access to a Remote Panel Server. The Remote Panel Server has two connections to V-Control Devices, the RemotePanelReceiver and the RemotePanelSender. Because V-Control, the Remote Panel Server and V-Control Designer communicate via TCP, they can run on the same machine or on different ones.
The Remote Panel Server is needed to connect V-Control Designer with V-Control