The document discusses various prototyping tools that can be used to create prototypes without code, including Flinto, OmniGraffle, Keynote, and Proto.io. For each tool, it provides information on pricing, strengths, weaknesses and how they can be used to create prototypes and test interactions. It emphasizes that while tools like Keynote and OmniGraffle are good for basic click interactions, Proto.io and Flinto allow for richer interactive prototypes that can be tested in the browser or on mobile.