Top 20 NuGet framework Packages

Core Knight Blades for Persistence using Entity Framework Core, used when Coding with Honor!
Application Framework
A coherent and convenient set of interfaces and base classes for entity domains. Dispense with boilerplate persistence code.
A powerful framework for .NET based on Automas and Tools that communicate with messages and events. The execution is asynchronous, multithreaded and follow every Automa's behavior. Each behavior is defined by attributes.
Package Description
The purpose of the library is deep copying of any objects and arbitrarily complex graphs, their comparison, serialization and deserialization without distortion, tracking mutations and manipulating the state. Homepage: http://makeloft.xyz/workroom/replication-framework
Configuration helper to populate a class configuration based on IConfiguration values.
Portable lightweight mvvm framework
Abp
Concordia.Framework is a object relational mapper for .NET including .NET Core. It also offers automatic entity generation, lazy loading, enum support and much more.
Application framework for NetCoreCMS
A library for SQL Server database access. Requires .NET Framework 4.5.2.
Package Description
System.Numerics for .NET Framework 2.0, 3.5. This is a backport from .NET Core.