System.Text.Json by: Microsoft

Provides high-performance and low-allocating types that serialize objects to JavaScript Object Notation (JSON) text and deserialize JSON text to objects, with UTF-8 support built-in. Also provides types to read and write JSON text encoded as UTF-8, and to create an in-memory document object model (DOM), that is read-only, for random access of the JSON elements within a structured view of the data. Commonly Used Types: System.Text.Json.JsonSerializer System.Text.Json.JsonDocument System.Text.Json.JsonElement System.Text.Json.Utf8JsonWriter System.Text.Json.Utf8JsonReader

xunit by: James Newkirk Brad Wilson

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. Installing this package installs xunit.core, xunit.assert, and xunit.analyzers.

xunit.abstractions by: James Newkirk Brad Wilson

Common abstractions used to exchange information between xUnit.net and version-independent runners (xunit.abstractions.dll).

xunit.analyzers by: Marcin Dobosz

Code Analyzers for projects using xUnit.net that help find and fix frequent issues when writing tests.

xunit.core by: James Newkirk Brad Wilson

Includes the libraries for writing unit tests with xUnit.net.