OR-Mapper for C# and VB.NET that is better than Entity Framework
...Our goal when designing the DbPipeline.NET™ Library was to create an easy to use database access layer set of classes using 100% managed code so that VB.NET and C#.NET programmers can use it to build database applications (Client/Server, Web, and 3-tier) without having to be consumed with the programming involved with the retrieval, handling, management and storage in memory of the data while it is being worked on, and updating of the data.
User contributed components that extends the functionality of NHibernate. More information in the wiki: http://www.nhforge.org/wikis/. Development List: http://groups.google.com/group/nhcdevs
TDO - Typed Data Object is a .NET source code generator (C#/VB) for data layers based on Microsoft SQL Server 2000/MSDE/2005/Express. TDO allows .NET Framework 2.0 developers, to have the source code automatically generated for MS SQL Server databases.
Cooperator is on the one hand, a base class library for Object Relational Mapping, ORM, and by another one, a tool of code generation for for the MS.Net 2.0/3.0, using Business Objects and Stored Procedures. DAL, ORM, UOW, FACADE, MAPPER, MODELING ...
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An Object/Relational persistence layer for VB6 and .NET (VB.NET,C#,etc) similar to ObjectSpaces etc. Database interaction is managed transparently at runtime and requires no SQL knowledge. Great performance, caching, flexible O/R mapping and more.