Top 20 NuGet AJAX Packages

A type-safe .NET-library for consuming web APIs
C# Library
Chilkat .NET Core Class Library
Extensions to VelocityDB for efficient LINQ index/BTree queries, AzureSession file API usage with Microsoft Azure, import/export to/from CSV and JSON, Sync, GeoHash, Compressed Bitmap and RTree.
Type-safe, easy and power configuration framework powerful configuration framework for .NET developers
CDP4 JSON Serialization Library
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+).
TweetSharp v2 is a fast, clean wrapper around the Twitter API. It uses T4 templates to make adding new endpoints easy.
JSON serializer for Rebus that is honest about its dependency on Newtonsoft JSON.NET and thus allows for customizing almost every aspect of how serialization/deserialization is performed
JSON Patch (https://tools.ietf.org/html/rfc6902) defines a JSON document structure for expressing a sequence of operations to apply to a JavaScript Object Notation (JSON) document; it is suitable for use with the HTTP PATCH method. The "application/json-patch+json" media type is used to identify suc...
Includes types that provide support for creating, serializing and validating JSON Web Tokens.
Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).
Deprecated. Use the strong named ServiceStack.Text package instead.
ServiceStack.Text JSON serializer support for NodaTime
Authentication, in-game commerce, player data, title data, inventory, characters, statistics, leaderboards, analytics and reporting, friends, multiplayer, matchmaking, tournaments, cloud script, trading, real-time event handling, player management, live ops, and server hosting for all major platform...
JSON ServiceClient implementation based on .NET's HttpClient
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.
Faster than Any Binary?
Catel.Serialization.Json library.
Chromely CefGlue Winapi implementation library - this is in .NET Standard 2.0 as it can be used in both .NET (Windows) and .NET Core (Windows, Linux). Chromely.CefGlue.Winapi version naming is based on CefGlue (Chromely.Unofficial.CefGlue.NetStd) version referenced.