Top 20 NuGet WebAPI Packages

WebAPI

A simple async wrapper for the Vine API.
GlobeLabs API for .NET 4.5 is a simple wrapper for the GlobeLabs API (beta) that exposes functionalities in a simplified manner possible.
Web API 2 library allowing you to define strongly typed direct routes.
A OWIN server for the Azure Service Bus Relay
A C# .NET SDK for Uber's API
Enables WebApi projects to use XSerializer for its xml serialization.
Wargaming Public API for .NET
Utilize DataAnnotations on your ASP.Net Web API models and return your own complex validation models, flattened models or default model state models.
Business rules and authorization extensions for Breeze Server for Entity Framework 6
Simple to use library for returning custom / vendor media type headers when using Web API. Register types explicitly or by convention with overrides, excludes and required custom interface options. eg. application/vnd.yoursite.customer-v1+json
.NET Utils Framework
A scaffold for building an application with Zurb for Applications and .Net
Progressive Download Library for WebApi 2
Library for managing Eve Online SSO authentication.
Hyprlinkr route dispatching based on Drum
Qi4CS Extension: Functional is an extension of Qi4CS.Core that allows ways to parametrize some functionality, which is not part of original API of objects, based on types of such objects. This mapping information can be specified during assembly time and also modified during runtime.
C# API client for Consul
This is a simple class for spinning up an ASP.Net Web API self host. I use it regularly within my test code.
A web api controller fluent mocking utility