Top 20 NuGet helpers Packages

Helper library with logger manager, result object, any helper extensions
Ccr.PresentationCore package for PresentationCore-level extensions, helpers, markup, and utilities. Contains constructs used widely across WPF Ccr Framework-based applications.
Xamariners.Identity.Core is common library for Identity Server
A set of .NET extensions for jQuery dataTables, jQuery Flot and jqPlot so that you can create the objects in C# and then JSON serialize them to the Web Forms or ASP.Net MVC views.
Common utilities and helpers useful when programming,
RapidCore is a collection of dotnet libraries to help you accelerate backend and api development
Configuration helper methods, properties, objects etc.
A helper library of BindingConverters, MarkupExtensions, and other utilities for building XAML applications for WPF 4 & 4.5, Silverlight 4 & 5, Windows Phone 7.5 & 8, and Windows 8.x.
A set of extension methods that can be used to facilitate the manipulation of date and time solving common dev problems.
ASPMVC Core extension for using ChustaSoft.StaticData
Extensions and helpers to facilitate work with MediatR library.
A set of extension methods that can be used to manipulate collections solving common dev problems.
A set of methods for manipulate enums.
Useful and re-usable methods when working in UWP
An Easy to Use Update Utility
This is a library that contains parity algorithms.
Common utilities, controls and more for any .NET WPF project
A set of helpful extensions and methods for .net framework and core development.
Helpers for Unit Testing in the cardsort project
A library of core helpers, extensions, constants, enums and other useful things for .NET Web projects.