UXPin is a cloud-based prototyping platform that allows users to create and visualize interactive designs. It is a powerful design tool with a bundle of built-in user interface libraries. In addition, you can customize the elements by using CSS code. This software supports seamless collaboration that allows co-design in the same prototype, which brings the client into the process in order to comment directly on the elements. In addition, it provides a flexible workflow that turns photoshop designs into prototypes. Since it preserves all photoshop and sketch layers, there is no need to rebuild your prototype.