: The goal of this work is to present the software WebRatio 5, which is a good representative of a new generation of CASE tools for model-driven design of Web applications. WebRatio 5 supports the WebML language and methodology, and exploits the implementation experience of previous versions of the software for providing user-friendly application design paradigms and reliable code generation engines. The tool is developed as a set of Eclipse plugins and takes advantage of all the features of this IDE framework. Moreover, it provides new capabilities in terms of support of extensions to the models, project documentation, and coverage of new phases of the development lifecycle. The overall approach moves towards a full coverage of the specification, design, verification, and implementation of Web applications.