The goal of this research is to provide a tool to unobtrusively introduce the design metrics D,, and Di into existing engineering practices. To that goal, different methods for visualizing the UML design metrics were explored. A small survey was conducted to determine which of the different visualizations is most attractive. The results of this survey were used to guide the design of the Design Metrics Visualization Plugin (Design MVP), which was developed as a plugin for the open-source UML tool Dia. This plugin allows for the calculation, and more importantly, visualization of the UML metrics during UML class diagram modeling.