This is what i found about this framework in their website…
The .NET Entity Objects Framework
Neo is a framework for .NET developers who want to write enterprise applications with an object-based domain model. It is well suited for domain-driven design and agile development.
Neo includes tools that create an extensible object-based domain model as well as the database schema from a an abstract description of the model. At runtime, rich schema information is used to dynamically generate all SQL required for object persistence management. Being based on ADO.NET data sets, a Neo domain model is independent of the actual backing store and works equally well with databases and objects in an XML representation.