NHibernate has a commercial side as well as the Open Source Products available as add ons.

Agility for ORMs Castle ActiveRecord Model Code Generator http://www.AgilityForORMs.com/

CodeSmith   http://www.codesmithtools.com/

DB Visual Architect  http://www.visual-paradigm.com/product/dbva/

GenWise http://www.genwise.com/Tour.aspx

LLBLGen Pro  http://www.llblgen.com/defaultgeneric.aspx

NHProf  http://nhprof.com/

Visual NHibernate  http://www.slyce.com/

WebORB for .NET (WebORB-NHibernate Documentation) 

Windows Server AppFabric (formerly Velocity)  http://msdn.microsoft.com/en-us/windowsserver/ee695849.aspx

NCache (Nhibernate L2 Cache)   http://www.alachisoft.com/ncache/index.html