Wikipedia
Proto.io
Proto.io is an application prototyping platform launched in 2011 and developed by the Labs Division of SNQ Digital. Originally designed to prototype on mobile devices, Proto.io has expanded to allow users to prototype apps for anything with a screen interface, including Smart TV’s, digital camera interfaces, cars, airplanes, and gaming consoles. Proto.io utilizes a drag and drop user interface (UI) and does not require coding.