JSON Generator is described as 'Generates data according to the template and saves it. Data can be requested from server using ajax with jsonp' and is an website in the development category. There are more than 10 alternatives to JSON Generator, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Self-Hosted apps. The best JSON Generator alternative is LoreData, which is both free and Open Source. Other great sites and apps similar to JSON Generator are Mock Turtle, JSONGenerator, Random Data and dbForge Data Generator for MySQL.
It's hard to put together a meaningful UI prototype without making real requests to an API. By making real requests, you'll uncover problems with application flow, timing, and API design early, improving the quality of both the user experience and API.
