Top 20 NuGet AJAX Packages

Json.NET is a popular high-performance JSON framework for .NET
JSON Schema reader, generator and validator for .NET
Structured logging with NLog. Generates log entries as JSON.
JSON Schema reader, generator and validator for .NET
Json.NET Schema is a complete and easy-to-use JSON Schema framework for .NET
NEST 6.x uses an internalized Json.NET serializer. This package enables serialization using your own custom Json.NET serializer
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.
Discriminated Json Subtypes Converter implementation for .NET
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.
Jwt.Net, a JWT (JSON Web Token) implementation for .NET
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.
.NET Standard 2.0 version of ServiceStack
JSON Schema reader, generator and validator for .NET
Microsoft.Extensions.Configuration (appsettings.json) support for Serilog.
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).