This site/demo shows a simple Nancy website that aggregates Nancy demo projects from multiple GitHub accounts that follow the Nancy.Demo.xxxx naming convention.
For rendering the views this site uses the SuperSimpleViewEngine, which is build into Nancy core, along with Knockout.js for binding data to the view.
On the storage front, we're using MongoDB, with the live samples site using MongoHQ. If you're running locally you will need to make sure you have a local instance of MongoDB running on your machine, or edit the Configuration.cs class and alter the connection string to point to your own MongoHQ account.