Top 20 NuGet interface Packages

libffi (Foreign Function Interface) is a library that allows software to call any function whose interface is known at runtime. Homepage: http://sourceware.org/libffi/
This package contains abstractions to provide standard Interfaces, or Abstracts, for common services typicality re-implemented in various Projects/Assemblies. Utilizing a standards based Type allows services to flow between otherwise disconnected Assemblies.
A portable api for filesystem io using a unified interface.
Wrapper libraries that provide high-level access to the Guild Wars 2 API ( http://wiki.guildwars2.com/wiki/API ).
Default HTTP Client for wrapper libraries that provide high-level access to the Guild Wars 2 API ( http://wiki.guildwars2.com/wiki/API ).
Build gadgeteer applications without connecting any hardware!
ContinuaInit initializes several variables in a configuration for you. This console application will automatically integrate with Continua CI and set several variables based on the current context.
SharpFish is a C# library for the Fischertechnik Serial Interface. It allows you to control and read inputs from your Fischer Inteface via RS232 port. Released under the MIT license.
Abstraction of the SQLite PCL Interface
NView is a cross platform user interface library for Xamarin.iOS, Xamarin.Android, and Xamarin.Mac.
A simple library for loading plugins.
ConsoleObjects is a framework for creating text user interface (TUI) applications.
Quickly develop file (Document) based WinForms applications using Kajabity.DocForms to handle all the boilerplate file handling. Visit the project website for detailed usage instructions, or see the samples on GitHub. Originally part of Kajabity.Tools.
C# Port of Gecco, written originally in swift from http://www.tg4.com.br
Common interfaces for contracts
This library provides simple ui usercontrols for wpf.
This library provides simple ui controls for wpf.
Interface for MIG service that adds HomeAutomation commands for controlling X10 and Z-Wave devices.