R & its best IDE RStudio (according to the majority of R daily users) offer us a wondeful framework for web apps creation. It's called Shiny. The success of this web apps framework generates the development of a large package's ecosystem arround shiny. From prototyping, realising beautiful UI, to testing and deploying to the production scale. With Shiny it's possible to realise both the front and the back end parts inside R :-) Isn't huge !
