EffiProz is a pure C# database that can be easily deployed in cloud, standalone & embedded configurations.

Linquify is a Visual Studio 2008/2010 Addin and C# .NET business class / DTO generator for LINQ to SQL and the Entity Framework. It supports rapid development of .NET and ASP .NET web application data layers allowing you to query as: Person.Load(5); Person.Name="n"; Person.Save()