Provided are a system and method of providing a widget. A device for providing a widget to at least one external device, includes: a communicator configured to enable a communication connection with the at least one external device; and a processor configured to register the widget to be provided to the at least one external device, generate visual data of the widget by using a layout of the widget as the device is connected to the at least one external device via the communication connection, and provide the generated visual data to the at least one external device, wherein the layout is used to display an execution screen of the registered widget on a screen of the device.