As a .NET developer continuing to learn and use Ruby on a daily basis, I am often surprised to see the influence the latter has on the former. NancyFX is a good example, as it brings the Ruby Sinatra web framework to the .NET world. (Singer Frank Sinatra's daughter is named Nancy, so isn't the name NancyFX clever?) It provides a concise and expressive framework for building web applications along the lines of ASP.NET MVC and the Web API. Here's my tour of NancyFX, in which I focus on setup and the basics.