Json.NET is a popular high-performance JSON framework for .NET

JSON is a light-weight, language independent, data interchange format. See http://www.JSON.org/ This package implements JSON encoders/decoders in JavaScript.

A JSON parser in C#, supporting dynamic deserialization in .NET 4.0

.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Benchmarks at: http://servicestack.net/benchmarks/ Includes the String and Stream functionality for all the ServiceStack projects including: - T.Dump() generic extension method for easy dbugging and introspection of types - WebRequest, Li... More information

Super lightweight Json library for .NET 2.0+/SL4+/WP7/WindowsStore Apps/Portable Class Libraries along with dynamic and DataContract support

Simple REST and HTTP API Client

Additional serialization provider for EventStore based on the Newtonsoft JSON.NET library.

Jayrock JSON is a versatile JSON parser, formatter and converter for Microsoft .NET Framework.

Hammock is an HTTP API library for .NET that greatly simplifies consuming and wrapping RESTful services.

Binaries for the ServiceStack web framework. Visit http://www.servicestack.net/ServiceStack.Hello/ and https://github.com/ServiceStack/ServiceStack/wiki/Create-your-first-webservice for walk throughs and docs on creating your first web service.

TweetSharp v2 is a fast, clean wrapper around the Twitter API. It uses T4 templates to make adding new endpoints easy.

dynamic json structure for C# 4.0. This provides only single .cs file.

RIAServices.Endpoints provides the Microsoft.ServiceModel.DomainServices.Hosting assembly, which serves the SOAP and JSON endpoints for Domain Services. The necessary web.config entries are added with this package as well.

JsonFx serialization framework

JSON Toolkit is a .NET library written in C# for parsing JSON strings, creating JSON objects in runtime and serializing the data.

Provides JSON (de)serialization support using Newtonsoft.JsonNet.

RabbitBus JSON serialization provider.

A Json.NET-based MediaTypeFormatter for the WebApi that can handle text-based Json as well as binary Json (Bson). To use: var config = HttpHostConfiguration.Create().UseJsonNet();

This package provides an assembly containing classes which extend the .NET Framework 4.5 with the necessary logic to process the JSON Web Token (JWT) format. That includes validating, parsing and generating JWT tokens; those capabilities can be applied both within the Windows Identity Foundation token processing pipeline and standalone, without any... More information

Json library for .NET