Top 20 NuGet WebAPI Packages

WebAPI

The runtime assemblies for Web Forms applications that use Kentico API.
Adds HAL support to ASP.NET Core
SlackConnector initiates an open connection between you and the Slack api servers. SlackConnector uses web-sockets to allow real-time messages to be received and handled within your application.
Easy-to-use, readable and comprehensive library for consuming TeamCity REST API. Written using real scenarios in mind, enables variuos range of queries and operation on TeamCity
Seamlessly adds a Swagger to WebApi projects!
Abp.Web.Api.OData
Tools for writing integration tests using Platron API client library Platron.Client to payment service https://platron.ru
Module for ASP.NET Web API that enables GZip and Deflate support for incoming and outgoing requests. Please note that this is not an official Microsoft package.
A wrapper for the DocRaptor HTML to PDF/XLS service.
Entity Framework Persistence Layer for the IdentityServer3 WS-Federation Plugin
This package provides a uniform model for receiving WebHooks from an open-ended set of WebHook generators such as Dropbox, GitHub, Slack, and many more.
.Net wrapper for the Clarizen API v2.0
A simple API wrapper for Urbandictionary
Voice Elements makes it easy to build both traditional phone applications, SMS and WebRTC applications which provide all the functionality of your phone right into your browser. This allows you use any .NET language to bring your voice applications to life.
WebApiThrottle message handler and action filter are designed for controlling the rate of requests that clients can make to an API based on IP address, client API key and request route. WebApiThrottle works with ASP.NET Web API hosted is IIS, Owin with IIS and Owin self-hosted.
.NET Standard web application framework built on ASP.NET Core w/ Kestrel and inspired by Express.js
C# client library and examples for using ElasticEmail API to send mail, manage contacts and other functions.
Helper library for claims-based identity, System.IdentityModel, JSON Web Tokens, OAuth 2.0 and OpenID Connect client
Puresharp is a Framework that provides the essential APIs to productively build high quality (.NET 4.5.2+ & .NET Core 2.1+) applications through reliability, scalability and performance without no compromise.
GitLab REST API .NET Client Library