NHibernate.BusinessObjects is an easy to use business layer that wraps the object-relational mapper (ORM) NHibernate. NHBO is designed for Winforms and WPF applications. Visit http://nhbusinessobj.sourceforge.net to get more information.
The NHibernate generation project uses a set of templates and a code generation engine such as CodeSmith to generate a set of Common POCO's (plain old c# objects), Business Objects, Data Access Controls, Unit tests, and sample web pages.
User contributed components that extends the functionality of NHibernate. More information in the wiki: http://www.nhforge.org/wikis/. Development List: http://groups.google.com/group/nhcdevs
NHibernate Query Analyzer is a tool to help developer understand NHibernate. This tool allows you to view the results from NHibernate both in their raw format from the DB and object graphs returned from NHibernate.
A Mapping generator for NHibernate (NH) via FluentNH and NH.Burrows. Generate source code in C# to access MySql or SQL Server dbs. VB.Net may be supported eventually. See Develop > News menu for updates and release notes.