Specs are quantitative aspects of the option such as the price
Pros
Pro
Choose what features you want to have
Negroni was developed as an alternative to Martini and Martini's "batteries included approach". You can choose which middlewares to include in your project. This way you get to choose what to have built-in.
Negroni cannot really be considered a true web framework because it does not have a built-in router. You need to choose one of the many web routers already developed by the Go community and integrate it into your Negroni project.