The most popular and friendly mocking framework for .NET
Best Tools For DOT Net
Browse 5 + DOT Net Tools

Moq

Bogus
Bogus is a simple and sane fake data generator for .NET languages like C#, F# and VB.NET. Bogus is fundamentally a C# port of faker.js and inspired by FluentValidation's syntax sugar.

Fluent Assertions
A .NET library for Basic Assertions

Specflow

LINQPad
LINQPad is a software utility targeted at .NET Framework development.