Top 20 NuGet json Packages

Structured logging with NLog. Generates log entries as JSON.
Json.NET is a popular high-performance JSON framework for .NET
JSON Schema reader, generator and validator for .NET
JsonRpc Rpc Client Nethereum provider
A fluent, portable, testable HTTP client library.
JSON Schema reader, generator and validator for .NET
A cross-platform .NET portable library that implements the JSON-RPC wire protocol and can use System.IO.Stream or WebSocket so you can use it with any transport.
Nethereum JsonRpc.Client core library to use in conjunction with either the JsonRpc.RpcClient, the JsonRpc.IpcClient or other custom Rpc provider
The Couchbase authored new and improved client for .NET based languages! Package supports both .NET Core and Full Frameworks 4.5 and greater.
App Metrics Formatters for metrics and environment data to JSON using Newtonsoft.Json.
Easy-to-use typesafe REST API client library, which is simple and customisable.
Json.NET Schema is a complete and easy-to-use JSON Schema framework for .NET
.NET Standard 2.0 version of ServiceStack
JSON Schema reader, generator and validator for .NET
C# Library
Jwt.Net, a JWT (JSON Web Token) implementation for .NET
Microsoft.Extensions.Configuration (appsettings.json) support for Serilog.
Binaries for the ServiceStack web framework. A simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://servicestack.net/text
The F# Data library (FSharp.Data.dll) implements everything you need to access data in your F# applications and scripts. It implements F# type providers for working with structured file formats (CSV, HTML, JSON and XML) and for accessing the WorldBank data. It also includes helpers for parsing CSV, ...