EPiAbstractions provides facades for many of the classes in EPiServers products which enable its users to decouple their code from the concrete implementations and thereby gaining the ability to unit test code that otherwise would depend on the concrete implementations.

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.

A project to automatically implement INotifyPropertyChanged using DynamicProxy2