Top 20 NuGet AJAX Packages

FileStorage is a document database stored in file system. Documents stores in various formats: json, csv, etc.
Reddit.NET is a .NET Standard library that provides easy access to the Reddit API with virtually no boilerplate code required.
Tool to generate AWS CloudFormation json templates for Amazon AWS CloudFormation
Experience is a useful, clean and fast functions library for .NET Projects. You can find the project wiki here: https://github.com/bkarababa/Experience
Extentions and DI utilities for Utf8Json. Part of the "Open" set of libraries.
Extentions and DI utilities for System.Text.Json. Part of the "Open" set of libraries.
Extentions and DI utilities for Newtonsoft.Json. Part of the "Open" set of libraries.
Unity shims and formatters for Utf8Json.
Add ImmutableCollection formatters to Utf8Json.
Provides JSON serialization infrastructure using the Newtonsoft.Json implementation.
A lightweight fluent .NET client for navigating and consuming HAL APIs. Includes support for .NET Standard.
TweetSharp v2 is a fast, clean wrapper around the Twitter API. It uses T4 templates to make adding new endpoints easy.
Strongly typed models for the grid in Umbraco.
TweetMoaSharp is a fast, clean wrapper around the Twitter API. Based on the original TweetSharp.
An out-of-the-box Web API for invoking database stored procedures, transforming the results as JSON, BSON, JSONP, XML, CSV, Excel xlsx, or any text generated by Razor dynamic template. Please visit https://github.com/DataBooster/DbWebApi for detail.
Eto.Json allows you to load json UI definitions for the Eto.Forms framework To get more information about how to get started, read the wiki: https://github.com/picoe/Eto/wiki
Provides JSON (De-)Serialization support for Nancy using Jil.
A client-side library for .NET that provides real-time HTTP push (comet/reverse Ajax). (Community Edition)
A client-side library for JavaScript that extends WebSync to provide optimizations for high network traffic scenarios.
Json requests on any .NET platform