Web sites that are pattern-oriented ... Hillside Patterns Cetus Links - Architecture & Design Patterns Patterns and Software Essential Concepts and Terminology Microsoft Patterns and Practices Home Martin Fowler: Enterprise Application Architecture Martin Fowler: Patterns in Enterprise Software Patterns and Best Practices for Enterprise Integration Patterns Share.Org Microsoft Patterns and Practices Live! Web Service Security: Scenarios, Patterns, and Implementation Guidance: Home Brad Appleton's Patterns in a Nutshell