Top 20 NuGet ORM Packages

Database support for Synergy Layered Application Architecture (SLARCH)
Trivial micro-orm implemented on Dapper, provides with CRUD helpers.
Package Description
CatFactory Core Engine (Code Factory, Mapping and OOP)
Allows SQL Server Compact 4.0 to be used with Entity Framework Core
Light, simple and fast convention-based code-first POCO ORM. Support for Creating and Dropping Table Schemas from POCOs, Complex Property types transparently stored in schemaless text blobs in Sqlite.
MySQL Entity Framework Core implementation of cloudscribe SimpleContent commands and queries
PostgreSql Entity Framework Core implementation of cloudscribe SimpleContent commands and queries
Kode-Aid shared Entity Framework Core library.
This is the official GraphDiff package. GraphDiff - Allows for automatic update of a graph of detached entities using Entity Framework v6+. If you have ever felt the pain of updating a detached graph with one or more nested collections then this is for you :)
Entity Framework Core .NET Command-line Tools. Includes dotnet-ef.
Redbridge C# Windows Library for working with Entity Framework in a unit of work style.
ExtNet UI的适配
NHibernate.Spatial is a library of spatial extensions for NHibernate, and allows you to connect NHibernate to a spatially enabled database and manipulate geometries in HQL or in .NET code using NetTopologySuite, providing you with a fully integrated GIS programming experience.
NHibernate.Spatial is a library of spatial extensions for NHibernate, and allows you to connect NHibernate to a spatially enabled database and manipulate geometries in HQL or in .NET code using NetTopologySuite, providing you with a fully integrated GIS programming experience.
SQLite-Net Extensions is a very simple ORM that provides cascade operations, one-to-one, one-to-many, many-to-one, many-to-many, inverse and text-blobbed relationships on top of the sqlite-net library.
SqlSugar ORM .Net Framework 4.0+ High-performance, lightweight http://www.codeisbug.com/Doc/8
Extensions to support ConnectionSettings with Insight.Database.
A polyglot library to help POCO objects work with both NoSQL and SQL databases at the same time on .NET Standard 2.0
Package Description