A service that helps you turn any website into a structured API. kimono recognises patterns in pages so you just select the elements of the website that make up your data and kimono will create a JSON, CSV or RSS feed. Obviously you need to make sure you have the right to use the data on a website, but if you do, this is a great service to easily create a simple API for use in an app from your existing website. There are also tools that let you turn your API into a responsive web app without any code.