xunit 

Includes the core library (xunit.v3.core.dll), to be used for writing tests; extensibility authors should include xunit.v3.extensibility.core instead. Supports .NET Framework 4.7.2 or later and .NET 6.0 or... More information

Includes common code shared between in-process runners (like xunit.v3.runner.inproc.console) and xunit.v3.runner.utility (used by 1st and 3rd party external runners). Supports .NET Standard 2.0.

In-process console runner for xUnit.net framework, providing the entrypoint for self-executing unit tests. Supports .NET Framework 4.7.2 or later and .NET 6.0 or later.

Includes the assertion library from xUnit.net (xunit.v3.assert.dll). Supports .NET Standard 2.0 and .NET 6.

xUnit.net is a developer testing framework, built to support Test Driven Development, with a design goal of extreme simplicity and alignment with framework features. Supports .NET Framework 4.7.2 or later and... More information

Console runner for the xUnit.net framework. Capable of running xUnit.net v1, v2, and v3 tests. Supports .NET Framework 4.7.2 or later.

Includes templates for use with 'dotnet new' for creating xUnit.net v3 unit test projects and extension projects.

Includes the version-independent runner for xUnit.net to run all of v1, v2, and v3 tests (xunit.v3.runner.utility.*.dll). Supports .NET Framework 4.7.2 or later, and .NET 6 or later.

MSBuild runner for the xUnit.net framework. Capable of running xUnit.net v1, v2, and v3 tests; when using dotnet msbuild, only v3 tests are supported. Supports .NET Framework 4.7.2 or later and .NET 6.0 or... More information

Includes the current assertion library from xUnit.net, as source into your project. Supports any platform(s) compatible with .NET Standard 1.1 and C# 6. For more information on consumption, please see... More information