The Pippo goal is to simplify the web development in Java (as much as possible). If you want to write a medium, big application in Java you have a lot of options, standard or non standard (Jsf, Wicket, Play, Spring Boot, ...). Pippo is for small and medium applications, maybe for applications where the backend is Java and the frontend is Angular or other javascript framework, for applications micro services oriented. Pippo has a clear niche and do not try to compete with the Jaava web frameworks enumerated above.