.NET object-relational mapping tools

ADO.NET Entity Framework
ADO.NET Entity Framework (EF) is an object-relational mapping (ORM) framework for the .NET Framework.

Base One Foundation Component Library
The Base One Foundation Component Library (BFC) is a rapid application development toolkit for building secure, fault-tolerant, database applications on Windows and ASP.NET. In conjunction...

DataObjects.NET
DataObjects.Net is a persistence and object-relational mapping framework for the Microsoft .NET Framework.

Habanero.NET
Habanero is an Enterprise Application Framework for the .NET platform that provides tools for rapid application development using agile techniques.

Neo (object-relational toolset)
Neo (or .NET Entity Objects) is an object-relational mapping (ORM) solution for the Microsoft .NET platform.

NHibernate
NHibernate is an object-relational mapping (ORM) solution for the Microsoft .NET platform: it provides a framework for mapping an object-oriented domain model to a traditional relational database.

OpenAccess ORM
OpenAccess ORM is an object-relational mapping tool (O/R mapper, ORM) and code generator for the Microsoft .NET platform.

Persistor.NET
Persistor.NET is an object-oriented persistence framework which provides persistence for pure object-oriented development.

SubSonic (software)
SubSonic is an open source object-relational mapper for Microsoft .NET Framework maintained by Rob Conery.