UMyProto is a web UI builder. UMyProto provides online service for fast prototyping of WEB applications. Known tools for application prototyping are not solving the very important for the customer problem of showing how the interface will work. The customer always wants to test the interface in real conditions at the very beginning of the project. With UMyProto it's really easy to show alive app with full functionality of user interface. UMyProto utilizes real HTML elements and widgets, and allows a user to use all available options of these widgets. After all, user can generate the real HTML pages to watch how the App looks in browser. Then, from the very beginning you could have the useful feedback from the customers and makes them happy.