Top 20 NuGet json Packages

Library to parse JSON Data
Provides standards-based UTF-8 support for the serialization of JSON.
A package that makes it possible to create certain bot dialogs based on a JSON dialog structure.
Package to user JSON instead of RESX files for localization
Convert JSON to System.Net.Http.HttpContent and vice versa with using Utf8Json.
Extension that resolves an instance of JsonHttpContentConverter with Microsoft.Extensions.DependencyInjection.
Convert JSON to System.Net.Http.HttpContent and vice versa.
SimdJson.Bindings: Parsing gigabytes of JSON per second. C# bindings for lemire/simdjson (written in C++).
Add JWT authentication with just mere configuration in your Web Application.
Class library for .NET. Provides extension logic for JSON file localization.
Websocket-based JSON-RPC message reader and writer implementations for CXuesong.JsonRpc.Standard.
Test Package
The C++ REST SDK is a Microsoft project for cloud-based client-server communication in native code using a modern asynchronous C++ API design. This project aims to help C++ developers connect to and interact with services.
An asynchronous JSON RPC server & client library.
JSON parsing, generation and reflective class-insertion library for .NET
A toolset for Asp.net core authorizing integrate to graph types for GraphQL .NET
Convert Lightbend's HOCON (Human-Optimized Object Configuration Notation) to Json
Standalone version of the JSON parser file included in some of the ratchet libraries. Usually the parser file is included directly instead of including the library
Simple wrapper around Net.Http
Json serialization implementations for OpenEventSourcing.