I am a big fan of generatedata.com ever since I discovered it a few years ago. Amazing work from the developer behind the project. This tool can generate a variety of data types (30+) such as names, emails, phone numbers, alphanumeric data, number ranges, dates and so on. The data can be exported as CSV, Excel, HTML, JSON, SQL among many other export types. This tool will no doubt save you a great deal of time in generating mock data.