GUI Builder provides the tools for the easy creation of graphical user interfaces from within the popular Epson RC+ Development Environment. It is a popular option for users that need a simple GUI and do not want to use a third party product such as Visual Studio. Even users that have never before created a GUI can easily make one with GUI Builder. By integrating the GUI Builder toolset inside of the Epson RC+ Development Environment, users can work from one development environment which helps reduce overall development time. For users that want to create more complex GUI's it is suggested to use Epson RC+ API 7.0 along with Microsoft Visual Studio or another platform which supports .Net library usage.