Nancy is a lightweight, built to run anywhere, low-ceremony, open source framework for building HTTP based services on .Net and Mono. The goal of the framework is to stay out of the way as much as possible and provide a super-duper-happy-path to all interactions. Nancy is completely self contained and allows you to go from zero to website in a matter of minutes. Literally. While you’re free to use the MVC pattern, it’s not a requirement.