T4 Toolbox is a set of ready-to-use code generators and T4 extensions for Visual Studio. Quickly build powerful C# or VB templates that generate multiple output files or simply use existing templates for LINQ to SQL, Entity Framework and more.
For more information visite the T4 ToolBox on Codeplex
T4 Toolbox can be downloaded from the Visual Studio Gallery
Oleg Synch is the developer of the T4 Toolbox