Top 20 NuGet AJAX Packages

This package implements the Serialization provider contracts for serializers supported in full ASP.NET 4.5 framework
A helper for .NET platform that makes RESTful API calls easier than ever.
A client library for accessing FileMaker data.
Extends ApprovalTests to allow simple approval of complex models.
Indexing of JSON in Lucene.net
JsonHCS (Json Http Client Simplified) for .Net is a HTTP Client wrapper with Json support
Simplify.Web JSON controller response and model binder
An extension for EntityFramework that provides Auditing, Concurrency Checks, storing complex types as JSON and storing history of all changes from DbContext to Transaction Log.
JSON serializer for SlackSharp(Slack API client library for C#) with Json.NET.
JSON serializer for SlackSharp(Slack API client library for C#) with Jil.
A client-side library for .NET that extends WebSync to provide location/user-based chat services. (On-Demand Edition)
A helper library for serializing and deserializing types in Units.NET using Json.NET.
cloudscribe.SimpleContent.Storage implemented with NoDb file system storage
Compares two objects and creates a collection of differences that are compliant to JSON Patch RFC6902
Elm inspire encoder and decoder for JSON
GraphQL for .NET
Small and simple storage for JSON objects in SQL Server.
Extension for ServiceStack.Text to allow using EnumMember attributes to serialize and deserialize enumerations.
F# JSON Reflection based serialization library
Skybrud.Umbraco.GridData is a small package with a strongly typed model for the grid in Umbraco 7.2 and above.