Caosd Research group Tools The following tools and prototypes have been developed as part of our research projects. For further information about any of them, please contact us. vEXgineA customizable and extensible implementation of the execution engine for the Common Variability Language AO-ADLAn Aspect-Oriented Architecture Description Language HydraA tool to feature modelling for Software Product Line PopuloA Tool for Debugging UML Models Hadas Green Energy Assistant