xunit.extensibility.execution by: jnewkirk, bradwilson

Includes xunit.execution.*.dll for extensibility purposes. Supports .NET 4.5.2 or later, and .NET Standard 1.1.

xunit.runner.visualstudio by: .NET Foundation and Contributors

Visual Studio 2017 15.9+ Test Explorer runner for the xUnit.net framework. Capable of running xUnit.net v1.9.2 and v2.0+ tests. Supports .NET 2.0 or later, .NET Core 2.1 or later, and Universal Windows 10.0.16299 or later.

xunit.v3.core by: jnewkirk, bradwilson

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 later.

YamlDotNet by: Antoine Aubry

A .NET library for YAML. YamlDotNet provides low level parsing and emitting of YAML as well as a high level object model similar to XmlDocument.