Top 20 NuGet json Packages

A .NET wrapper for the API provided by https://backpack.tf/. Support for all currently implemented (and safe to use) APIs.
NMatcher is a simple library that eases tests (mostly with json).
A super lazy helper class to statically access serializers
JSON mapper for Newtonsoft Json
Newtonsoft Json.NET AOT compatible, .NET Standard 2.0 compliant
Pandora allows external configuration for your projects
Sdk for json schema project.
Replace fields in json, replacing by something, don't care if property is in depth objects. Very useful to replace passwords credit card number, etc.
SignalWire development kit for operating with http://signalwire.com services.
JSON-LD processor for .NET. Implements (part of) the W3C JSON-LD 1.0 standard.
Extensible F# Event Codec for System.Text.Json and Newtonsoft.Json with versioning tolerant converters
A fast and memory efficient binary serialization library, powered by dynamic IL generation and inspired by MessagePack
Use Newtonsoft.Json (Json.NET) as a serializer.
Enable JSON logging in log4net.
Hammock is an HTTP API library for .NET that greatly simplifies consuming and wrapping RESTful services.
Skybrud.Social is a framework in .NET for integration with various social services like Twitter, Facebook and Instagram. The framework will handle all the technical parts and API communication so you don't have to.
Simple JSON parser/encoder for .NET and Mono.
OpenRasta is an open-source .NET framework for building REST APIs
Monadic JSON serialization/deserialization library for F#
Adds HAL support to ASP.NET Core