Generate Data is described as 'It's a free, open source script written in JavaScript, PHP and MySQL that lets you quickly generate large volumes of custom data in a variety of formats for use in testing software, populating databases, and scoring with girls' and is an website. There are more than 10 alternatives to Generate Data, not only websites but also apps for Windows, Linux, SaaS and Mac. The best Generate Data alternative is AryaWebStudio, which is free. Other great sites and apps similar to Generate Data are Mock Turtle, SQLable, JSONGenerator and Random Data.
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.
