db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)
aspbeans is a framework allowing translation between bean-like .NET objects and ASP web forms, allowing forms to be mapped to an object-oriented hierarchy (with relationships like many-to-one or one-to-one). Reduces coupling and makes developers happy.