Top 20 NuGet c# Packages

Utility library. Contains lots of helper methods, IL generation and crypography extensions.
A collection of 110+ analyzers for C#, powered by Roslyn.
Pure Data as an embeddable audio synthesis library.
Extension methods and Helper class functionality to extend common .NET functionality. This package not does this come with any warranty. Contributions welcome.
StyleMVVM is a full featured MVVM framework designed from the ground up for the Windows Store platform (C#, C++ and HTML/JS supported). StyleMVVM has now been ported to Windows Phone 8 and WPF (.Net 4.5).
AODL is C# .NET library for creating / editing documents in the OpenDocument Format ( ODF ). Requires no knowledge about the ODF XML schema itself.
Read and Write Excel files Dynamically. and also you can see source code on github, just search "ExcelDynamicReaderWriter" on github ;)
ILNumerics brings Matlab-like syntax, high performance execution and 2D/3D visualisations for programmers and scientists on .NET (C#). This package adds native dependencies for 32 bit and 64 bit only. It is automatically loaded when the main package 'ILNumerics' is referenced.
A .NET assembly which adds a couple of extension methods to the MailMessage class of the System.Net.Mail namespace. It also contains a serializable replica of the MailMessage class.
Various tools to extend the .NET FrameWork
Omnifactotum: the .NET library intended to help .NET developers avoid writing the same helper types, methods and extension methods for different projects.
Create Transactional use cases. For documentation please access: https://github.com/nerdscomputing/deeptransaction
Nightingale is a object relational mapper for .NET including .NET Core. It also offers automatic entity generation, lazy loading, enum support and much more.
The goal of DaVinci is to help you to write better object-oriented C# code. Better means maintainable, readable and testable code. Because DaVinci's rule are very strict, it's recommended to use DaVinci when you exercise programming (e.g. coding dojo). For the currently supported rules, have a look...
A C# netsh manager
BugSense is the leading crash reporting and quality metrics service for mobile apps. This is the official plugin for Windows Phone 8.
BugSense is the leading crash reposrting and quality metrics service for mobile apps. This is the official plugin for Windows Store 8.
Discussions is the worlds most easy forum asp.net control - just drag & drop Discussions from Visual Studio toolbox and you have a full fledged forum on your page with database, email notifications and facebook integration working out-of-the-box. Discussions features both the wellknown standard foru...
Provides and centralizes all of the authentication, api methods, and types that are available with the InstaNext platform.
BugSense is the leading crash reporting and quality metrics service for mobile apps. This is the official plugin for Windows Forms.