What is it? It is the Windows Forms application, written in C#, that can be used for time series forecasting (and also visualization and preprocessing).

Some distinguishing features? It offers an easy-to-use way of building a complex forecasting system (at least I believe so) - there is a set of components, where each component has some specific function (data visualization, preprocessing, data loading etc.), and you can drag-and-drop as many components as you want onto the working area, configure them and connect them using GUI. As a result the resulting system is represented visually (which I believe is pretty convenient and intuitive).