Measuring the Quality of Model-Driven Projects with NDT-Quality M.J. Escalona, J.J. Gutiérrez, M. Pérez-Pérez, A. Molina, E. Martínez-Force, and F.J. Domínguez-Mayo Abstract Model-driven web engineering (MDWE) is a new paradigm which pro- vides satisfactory results in the development of web software systems. However, as can be concluded from several research works, MDWE provokes traceability problems and the necessity of managing constraints in metamodel instances and transformation executions. The management of these aspects is usually executed manually in the most of MDWE approaches. Nevertheless, model-driven paradigm itself can offer suitable ways to manage them. This chapter presents NDT-Quality, an approach to measure the quality of web projects developed with NDT (naviga- tional development techniques), and offers a view about the application of this tool in real web projects. Keywords Web engineering · Model driven web engineering · Quality assurance · Tool support 1 Introduction Model-driven engineering is a new paradigm that is being assumed by several research groups in the improvement of methodological approaches for web envi- ronment. UWE (UML web engineering) [12], WebML (web modeling languages) [2], and OOH [1] are only a few examples. MDWE is providing good results in this area, but for application to real projects some tools are necessary to assure the quality of results. MDWE consists in the definition of a set of metamodels in each phase of the life cycle, followed by the establishment of a set of transformations between these metamodels which enable subsequent models to be derived. For instance, Fig. 1, obtained from [14], shows a schema on the adaptation of standard MDA (model-driven architecture) [15] in web development.