AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.

Generate random values plug-in for Notepad++. Use this plugin to generate passwords, guids or random datasets in CSV, JSON, XML and SQL formats. Use the fake test data for performance and QA testing to improve software quality in application development, reports, database modeling, webdev etc.

Mockaroo.NET is a portable class library that allows you to generate sample data based on a object type using the Mockaroo API.

Subtle test data factory with flexible capabilities to customize created objects

System.Random on steroids. The library can be used to generate a random value for any type. It also has the ability to generate email addresses, phone numbers, time zones, company names, names, titles, lorem ipsum, and even entire objects.

App that can create a large amount of randomly generated personal details, including: address, full name, phone number, date of birth, gender, and email.

Cross database engine ADO.NET tools (for create, delete, insert data, e.t.c.) and extension for create DB and init via set of sql scripts mainly for prepare Unit tests infrastructure

Intelligent data generator for Sql Server and Oracle. Insert realistic data into tables for testing (CDC like) purpose.

A tool to support creating test data automatically for most database systems which support ODBC

Faker is a dotnet package that generates fake data for you.

Fake Input Provider for Transformalize powered by Bogus

Generate Swedish test customer data!