Guide: A GUI differentiator

Applications with Graphical User Interfaces (GUIs) are ubiquitous. Nontrivial GUI-based applications (GAPs) evolve frequently, and understanding how GUIs of different versions of GAPs differ is crucial for various tasks such as testing and project effort estimation. We offer a novel approach for comparing GUIs. We built a tool called GUI DifferEntiator (GUIDE) that allows users to visualize differences between GUIs of running GAPs automatically, so that the identified changes can be served as guidance to test the new release of the GAP or to estimate the effort of a project.