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.
Business Process Engine (BPE) is an implementation of Model-Driven Development approach. BPE let you to "draw" an algorithm (flow of actions) and test it in the same environment.
Solution is implemented in C# as a plug-in to Microsoft Visio tool.