Top 20 NuGet extensions Packages

Softal .NET utilities, helpers and extensions
Some usefull extensions methods
Common extensions by DioLive Studio
Various language extensions.
Helper utility with some basic extensions for coding using async/await.
This package implements the core invisionware framework
A nicer read than Enumerable.Range.
A common library used for projects that make use of NHibernate and Fluent NHibernate. Incudes also some primitive logging and some extensions methods.
Package Description
Simple .NET library for writing SOLID and DRY code
Aurochses.Extensions.Configuration is a library based on Microsoft.Extensions.Configuration.
Package Description
Unity3D build support for Cake - https://github.com/samoatesgames/Cake.Unity3D
Tools for c# development
A library of extension methods added to classes of the Autodesk Revit API