dbForge Data Generator for MySQL is a powerful GUI tool for creating massive volumes of realistic test data. The tool includes a large collection of predefined data generators with customizable configuration options that allow populating MySQL database tables with random data. You don't have to create your test data manually anymore - dbForge Data Generator for MySQL makes the data generation process easy and fast.
Random Data - Generate random data for testing
OK JSON - Format and view JSON with native Mac app
Generate Data - GenerateData.com: free, GNU-licensed, random custom data generator for testing software
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Softbuilder SB Data Generator - SB Data Generator is a simple and powerful tool to generate and populate selected tables or entire databases with realistic test data.
MockTurtle.net - Generate realistic random JSON data through a simple and intuitive GUI.