xUnit.net is a free, open source, community-focused unit testing tool for .NET.
:cake: Cake (C# Make) is a cross platform build automation system.
A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
bUnit is a testing library for Blazor components that make tests look, feel, and runs like regular unit tests. bUnit makes it easy to render and control a component under test’s life-cycle, pass parameter and inject services into it, trigger event handlers, and verify the rendered markup from the component using a built-in semantic HTML comparer.
A fork of FluentAssertions controlled by the community.
Visual Studio Test Platform is the runner and engine that powers test explorer and vstest.console.
Machine.Specifications is a Context/Specification framework for .NET that removes language noise and simplifies tests.
A cross-platform sample application built with ReactiveUI. Camelotia is a file manager for cloud storage providers and local file systems, demonstrating reactive MVVM architecture, testable view models and shared code across desktop UI frameworks.
✅ List of Automated Testing (TDD/BDD/ATDD/SBE) Tools and Frameworks for .NET