LLBLGen is a simple open source code generator for generating Microsoft SQL Server stored procedures and source code in the .NET languages C# or VB.NET, created by Solutions Design bv. The source-code of LLBLGen is not publicly offered by Solutions Design, however is available in a codeproject.com article from 2002.
In 2003, LLBLGen was replaced by a commercial O/R mapper called LLBLGen Pro, from the same company. Since the release of LLBLGen Pro, Solutions Design has stopped the development of the open source tool LLBLGen, to continue the development of the commercial O/R mapper LLBLGen Pro, which in May 2010 reached v3.0.