I'm not suggesting that people actually write business applications in R -- I'm just saying it's probably the closest thing to what you're asking for. And I ag

I'm not suggesting that people actually write business applications in R -- I'm just saying it's probably the closest thing to what you're asking for. And I agree that what you want should exist -- R is proof that it's perfectly possible and natural! Although, people are using (abusing) R to write web apps: https://shiny.rstudio.com/ https://shiny.rstudio.com/ They mostly display data, but they have non-trivial interaction done in the style of JS.