Provides Visual Studio 2012 UML toolbox items representing the majority of the Gang of Four design patterns. The patterns are split into Creational, Structural and Behavioural sections, and includes a supporting UML profile.
The extension adds new toolbox items to the UML toolbox.
If you're interested in how to create toolbox items then I've outlined the process in ablog post here.
Once installed, to optionally see the custom associated UML stereotypes for the patterns, select the GoF Design Patterns profile in the model properties:
If you're interested in looking at how to create toolbox items or want to adapt or extend these then please take a look at the Codeplex site where the Visual Studio solutions behind the toolbox items are available for download:
Features
Screenshot