Top 20 NuGet ORM Packages

A high performance, low code alternative to ORM's such as Entity Framework, offers intelligent database mapping to your existing CLR objects with minimal effort. Visit "Design Goals" on GitHub to see more rationale and guidance.
Entity Framework: BulkSaveChanges, BulkInsert, BulkUpdate, BulkDelete, and BulkMerge. Support: SQL Server, SQL Azure, SQL Compact, Oracle, MySQL, SQLite, and PostgreSQL. This library is NOT free. FREE Trial always available for the current month.
NHibernate persistence for CoreDdd library
Generic ADO.NET helper library to connect to a relational database system using a given providers ADO.NET driver. Driver can be in Global Assembly Cache or referenced as a nuget package.
Support for store functions (table valued functions, scalar user defined functions and stored procedures) for Entity Framework 6.1.1+ Code First.
Entity Framework: BulkSaveChanges, BulkInsert, BulkUpdate, BulkDelete, and BulkMerge. Support: SQL Server, SQL Azure, SQL Compact, Oracle, MySQL, SQLite, and PostgreSQL. This library is NOT free. FREE Trial always available for the current month.
A cross-platform, fully asynchronous fork of the popular PetaPoco micro-ORM. Supports SQL Server, Oracle, MySQL, PostgreSQL, SQLite, and SQL Server CE. Runs on .NET Framework (4.5 and above), .NET Core (1.0 and 2.0), Mono, Xamarin (iOS, Mac, and Android), and UWP.
SmartSql = Dapper + MyBatis + Cache(Memory | Redis) + ZooKeeper + R/W Splitting + ......
Flexberry ORM package.
Abp.EntityFramework.Common
A lightweight and high-performance Object/Relational Mapping(ORM) library.
A lightweight and high-performance Object/Relational Mapping(ORM) library.
A lightweight and high-performance Object/Relational Mapping(ORM) library.
A lightweight and high-performance Object/Relational Mapping(ORM) library.
SqlSugar ORM .Net Framework 4.0+ High-performance, lightweight http://www.codeisbug.com/Doc/8
The SQLServer, ODBC, and OLEDB providers for Insight.Database. These are automatically included in the Insight.Database package, except the ODBC provider for .NET Core 2.0, which is in Insight.Database.Providers.Odbc.
KVLite is a partition-based key-value cache built for SQL RDBMSs. This package contains an Entity Framework query cache provider.
Cache provider for NHibernate using MemoryCache (System.Runtime.Caching).
Ninject IoC registration for CoreDdd.Nhibernate library
Simple CRUD operations for Dapper. Fork including pagination and support for NO SYNC