Top 20 NuGet ORM Packages

EFSpecs is a library to assist in testing your entity framework model mapping. It will create an entity with the values you provide it with, then send that entity off to the database, then pull it from the database to verify the values were saved correctly. And being the good citizen that it is, the...
CSharpSQLite driver for Fluent NHibernate.
Set of extension methods representing a lightweight orm and a migration framework, for use with Dapper.
An extension of the NCommon container adapter for Unity
Business Logic Toolkit AzureSql Data Provider for .NET
Bootstrap for the Data project: the project that holds actual implementations of your repositories (using NHibernate in this case)
MS SQL HierarchyId methods support for NHibernate
Trivial micro-orm implemented on Dapper, provides with CRUD helpers.
Entity Framework implementation for Queries with Waffle.
Enables NHibernate to batch commands when using MySQL
Zero Framework is .NET based framework for rapid development of thick client applications using agile methodologies. It uses EF Code First, Caliburn.Micro, custom message-based comunication running over WCF and MEF for dependency resolution.
Trivial micro-orm implemented on Dapper, provides with CRUD helpers. specialize to handle SQLite
This project is an NHibernate second-level cache provider for App Fabric. This project is based on the original implementation for the beta versions of AppFabric caching, code named velocity, which can be found at https://github.com/martinernst/NHibernate.Caches/tree/master/Velocity.
Zero Framework is .NET based framework for rapid development of thick client applications using agile methodologies. It uses EF Code First, Caliburn.Micro, custom message-based comunication running over WCF and MEF for dependency resolution.
NecroNetToolkit is a set of tools that simplify and help with development of smaller projects based on ASP.NET MVC and Entity Framework.
NCommon extensions for ASP.Net MVC
A NCommon container adapter for Ninject
A NCommon container adapter for StructureMap
A NCommon container adapter for Unity
NCommon data adapter for Db4o