Top 20 NuGet AJAX Packages

Proto.Actor adapter for Newtonsoft.Json serializer
Two-way web communication protocol based on sockets for real-time apps
A simple, lightweight and mockable C# Rest client focused on JSON but works also with XML, plain text and raw bytes, built on top of HttpClient, Newtonsoft.Json and XmlSerializer.
IJsonObjectWriter abstraction for JSON response generation without using ASP.NET Core MVC.
Client for accessing the Tankerkönig MTS-K Api for German fuel prices.
LeBlender addon for Skybrud.Umbraco.GridData.
JsonConfig.Core is a simple to use configuration library, allowing JSON based config files for your C#/.NET or .NET Core application instead of cumbersome web.config/app.config xml files.
Adds HAL support to ASP.NET Core
HAL Models for producing HAL Json
.NET Wrapper for PrexView API.https://prexview.com
QSwag is a complete swagger generator for .NET
A portable text and binary serialization library for flat POCOs
CHIMP JSON metadata writer
Wyam is a simple to use, highly modular, and extremely configurable static content generator. This library contains support for parsing JSON content.
An implementation of the JSON 2.0 RPC protocol.
Textile Content-Provider for blog-dot-net
Markdown Content-Provider for blog-dot-net
Authentication and service implementation for the BitBucket API.
Json Serializer for Sixeyed.Caching.