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Formal And Precise Software Patterns Representation Languages
An annotated bibliography of articles describing research in the formalization of design patterns, including formal languages, tools supporting the implementation and synthesis of patterns, and position papers.
www.eden-study.org/

Patterns for Object/Relational Database Access
Contains patterns, links and literature on object/relational database access layers.
www.objectarchitects.de/

Diemen Repository of Interaction Design Patterns
Open source (Wiki) collection and collaboration site focused on creating and extending patterns for screen design, with a focus on Interaction Design and Usability.
www.visiblearea.com/

An Introduction To Process Patterns White Paper
Introduces the concept of process patterns, reusable building blocks from which an organization may tailor an object-oriented software process. Process patterns bring reuse and consistency to the entire OO software process (OOSP). By Scott W. Ambler, AmbySoft Inc.
www.ambysoft.com/

Hypermedia Design Patterns Repository
Provides reusable design experience gathered by other designers of hypermedia and Web applications. Includes discussions and papers.
www.designpattern.lu.unisi.ch/

Design Patterns and Pattern Languages
Pattern information and tutorials by Douglas C. Schmidt.
www.cs.wustl.edu/

Welie.com: Interaction Design Patterns
A collection for various user interfaces. Includes background information and links to other collections.
www.welie.com/

Software Technologies - Design Patterns
Software Design Pattern techniques, papers, references and catalogues for professional software developers.
www.swtech.com/

JUnit Test Patterns in Rational XDE
Describes using how to create patterns for the JUnit eXtreme Programming automated testing framework, by Frank Hagenson.
www.abracadabrasolutions.com/

Learning Guide To Design Patterns
A learning guide for those who want to learn and use design patterns, rather than just read about them.
www.industriallogic.com/