Top 20 NuGet ORM Packages

LinqKit.EntityFramework is a free set of extensions for LINQ to SQL and Entity Framework power users. Include(...) and IAsync are supported.
Design-time Entity Framework Core Functionality for MySQL Server.
Abp.EntityFramework.Common
LINQ to DB is a data access technology that provides a run-time infrastructure for managing relational data as objects.
This library provides core functionalities for data access layers generated using Genie CLI
LinqConnect is a fast, lightweight, and easy to use LINQ to SQL compatible ORM solution, supporting SQL Server, Oracle, MySQL, PostgreSQL, and SQLite. It allows you to use efficient and powerful data access for your .NET Framework, or .NET Core applications supporting Code-First, Model-First, Databa...
Fast data access library for .NET Core (micro-ORM): simple API for CRUD, dynamic queries, SQL commands generation (command builder), relational expressions parser, schema-less data access, flexible query results mapping to annotated POCO models, app-level data views, RecordSet structure (replacement...
EntityWorker is an object-relation mapper(ORM) that enable .NET developers to work with relations data using objects. EntityWorker is an alternative to entityframwork. is more flexible and much faster than entity framework. And it have support to multiple providers like mssql, sqlite and postgressql
Provides abstractions and attributes that are used to configure Entity Framework Core
LINQ to PostgreSQL is a data access technology that provides a run-time infrastructure for managing relational data as objects.
Abp.EntityFrameworkCore
Microsoft Sql Server Entity Framework Core implementation of cloudscribe core storage
MySql Entity Framework Core implementation of cloudscribe core storage
PostgreSql Entity Framework Core implementation of cloudscribe core storage
A DB2 ODP.NET provider for Insight.Database so Insight.Database can do its magic on DB2.
Provides an abstraction over ADO.NET.
The Enterprise Web Library (EWL), and its tailored infrastructure platform, are a complete and open solution for developing and operating web-based enterprise software.
EntityFrameworkCore.FirebirdSql is an ORM, created at the top of the Firebird ADO.NET (FirebirdSql.Data.FirebirdClient) Data Provider. It allows you to use Entity Framework Core 2.0 as an extension, to access Firebird (2.x, 3.x, 4.x)
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.
SmartSql = MyBatis + Cache(Memory | Redis) + ZooKeeper + R/W Splitting + ......