Why a Duck
An introduction to polymorphism and design patterns, by John Brewer. Includes links and source code.
Welie.com: Interaction Design Patterns
A collection for various user interfaces. Includes background information and links to other collections.
Visitor Pattern (Dual Dispatch without Multimethods)
Simple example of a problem that the Visitor pattern can solve, with a code example in Java, avoiding switch statements and downcasts.
Unix Shell Patterns
A collection of idioms for Unix shell programming
Some Notes On Christopher Alexander
A summary of Alexander's contributions to several fields including the use of patterns in programming.
Software Technologies - Design Patterns
Software Design Pattern techniques, papers, references and catalogues for professional software developers.
Portland Pattern Repository
Very useful pattern information. Includes articles as well as discussions in the form of the WikiWikiWeb.
Patterns-discussion FAQ
This is not a FAQ in the usual sense. It contains very brief summaries of topics that have been discussed on the patterns-discussion list, in question and answer format.
Patterns of Enterprise Messaging
Software patterns describing how to achieve Enterprise Integration using Enterprise Messaging (JMS with Java and MSMQ with C#)
Patterns Home Page
This a wonderful resource for all things Patterns (and Anti-Patterns).
