Persism is a wood simple, auto discovery, auto configuration, and convention over configuration ORM (Object Relational Mapping) library for Java and .NET.
This project is attempting to create an maintain a public implementation of the Active Record pattern, to be used with ESRI products, coded using ArcObjects and C# 3.5.
The NOAP toolkit provides a collection of utilities to use for slightly more exotic development on the Common Language Infrastructure. NOAP includes a fast ORM, an Objective-C compiler for .NET, and much more. See the Web site for more information.