Top 20 NuGet api Packages

Falcor.NET router implementation. To use Falcor on the server, use the Falcor.Server.Owin package.
A dynamic library for the Eve Online CREST API.
The Connection-Based Asynchronous Messaging (CBAM) HTTP package contains API to send HTTP requests from client to server. The HTTP API itself is minimalistic and easy-to-use.
AutoApi is structured to help you create a simple REST Api in minutes! Step 1: Define your ApiEndpoint's in shared code. Step 2: Start your Api with those endpoints on the server. Step 3: Use the same endpoints to call the Api from the client! ... Step 4: Profit?
A portable library to consume the Marvel API (http://developer.marvel.com/). Supported Platforms: .NET Framework 4.5, Windows 8, Windows Phone 8.1, Windows Phone Silverlight 8, Xamarin.Android, Xamarin.iOS
Library for xamarin forms to link components to information consumed with the ConsumeAPI.Simple
Simple ASP.NET Core 2.0 compatible ILoggerProvider implementation based on Telegram Bot API.
This client library provides access to the Microsoft Cognitive Services News Search API.
A .Net Core client library for the TransIP Api, based on the work of jwvdiermen.
Provides extension methods for Microsoft.Azure.Documents.Client.DocumentClient that streamline CRUD operations against a Cosmos DB graph using generated Gremlin script.
XrmToolBox Plugin for the Online Management API
A single C# client library for PayLite's Communication API. It only takes 21 lines of code to send, track and store email and SMS communications with this API. Register for an API key and get 10,000 free emails per month with MessageLite or insert your key/credentials for SMTP, SendGrid, Twilio, etc...
Library with classes for communicating with PatchKit API.
Slack client communication with the api. You just need to generate your tokent to connect. Rtm inclusion (Real Time Communication). Small Winform based GUI integrated if needed.
etherFAX SENx Encryption Library
NewRelic.Synthetics.Api - MsBuild target and accompanying code to work with NewRelic Synthetics API (disable/enable Synthetics monitors during deployment)
Core utility functions for web applications