C# IoC Framework

Castle (IoC Framework and Container) is an open source project for .net that aspires to simplify the development of enterprise and web applications. Offering a set of tools (working together or independently) and integration with others open source projects, Castle helps you get more done with less code and in less time.
Castle consists of:

1. MonoRail - MVC framework inspired by ActionPack, a paradigm shift to simplicity.
2. ActiveRecord - The enterprise data mapping pattern implemented using NHibernate
3. MikroKernel - A lightweight inversion of control container core
4. Windsor Container - Augments the MicroKernel with features demanded by most enterprise projects

Related topics: Inversion of Control, Dependency Injection, Apache Avalon, Apache Excalibur, Castle, Spring, Spring.Net, Hibernate, NHibernate.

http://www.castleproject.org/