Top 20 NuGet AJAX Packages

Json.NET plugin for Npgsql, allowing transparent serialization/deserialization of JSON objects directly to and from the database.
WampSharp Newtonsoft.Json support
ServiceStack is a simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started
Provides serialization support between Noda Time and Json.NET.
JSON Schema reader, generator and validator for .NET
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://github.com/ServiceStack/ServiceStack.Text
Chilkat .NET Class Library (32-bit) for SSH/SFTP, FTP, CAdES, XAdES, REST, POP3, SMTP, IMAP, SSL/TLS, Zip, REST, OAuth2, HTTP, RSA, XML DSig, Encryption, Compression, XML, Socket, XMP, HTML to XML, JSON, JWT, OAuth1, conversion, PKCS12/PFX, Java Keystore, ASN.1, PEM, ECC, Async, ...
The F# Data library (FSharp.Data.dll) implements everything you need to access data in your F# applications and scripts. It implements F# type providers for working with structured file formats (CSV, HTML, JSON and XML) and for accessing the WorldBank data. It also includes helpers for parsing CSV, ...
Contains general interfaces and classes for working with FHIR data, regardless of FHIR version or POCO's
JavaScript logging package that lets you log exceptions, AJAX timeouts and other client side events in your server side log. Supports ASP.NET 4.x (.Net 4.5.2+) and ASP.NET CORE (.NETStandard 2.0+).
GraphQL for .NET
Microsoft.Extensions.Configuration (appsettings.json) support for Serilog.
A simple, compact JSON-based event format for Serilog.
Faster than Any Binary?
NeuChar SDK 跨平台信息交互标准
.NET Error handler/logger used internally at Stack Overflow. Primarily for logging all unhandled exceptions to SQL, but also supporting JSON and Memory based logging.
JSON Schema reader, generator and validator for .NET
Avro provides: Rich data structures. A compact, fast, binary data format. A container file, to store persistent data. Remote procedure call (RPC). Simple integration with dynamic languages. Code generation is not required to read or write data files nor to use or imple...
Library containing lexer and parser for GraphQL syntax
ServiceStack is a simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started