Made a comparison of a rather large codebase that I did for a client before in flask to perl dancer2 and ror. Obviously the rails codebase is larger. The flask version remains as minimal as it once did, even considering blueprints and the dancer version is small but really expandable and powerfull. It has some great things, it was inspired by sinatra so it has that magical approach to doing things but the code is solid and easy to understand imho. They really make it towards perl code is not the unreadable codebase as it once was and the syntax just clicks. Even for its api capabilities it works amazing with the front end (Vue.js) and I can honestly say that I really enjoy it.