The object-relational mapper for .NET


NHibernate is a mature, open source object-relational mapper for the .NET framework. It's actively developed, fully featured and used in thousands of successful projects.

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Visual Studio Friendly
Easily map regular C# or VB.NET object models designed in Visual Studio. No special base classes or attributes needed. Fully supports inheritance, components and enums.

Fast Development Cycle
Generates database tables from your domain models. Supports all popular relational databases. Supports the most complex legacy scenarios. 

Tons of Plugins & Tools
Full Text Search. Cluster-scoped caching with Microsoft Velocity & Memcached. Business validation rules. ReSharper plugin. Castle Active Record. S#arp Architecture. And many more...
Established Community
NHibernate is a popular, fast growing ORM with a helpful community of seasoned developers. Used in thousands of commercial and open source projects.

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