GoF patterns with C++ and Java demos and some other patterns.

A learning guide for those who want to learn and use design patterns, rather than just read about them.

A pattern language for developing object-oriented frameworks.

Article by Todd Coram and Jim Lee. A pattern language that can be used to generate user centered software designs.

Article on patterns, emphasizing design patterns, a type of pattern often used in software design. ACM Crossroads.

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, ...

An introduction to polymorphism and design patterns, by John Brewer. Includes links and source code.

Tool support for object-oriented (design) patterns.

A collection of patterns that can be used to describe classic solutions to common object oriented design problems.

Open source (Wiki) collection and collaboration site focused on creating and extending patterns for screen design, with a focus on Interaction Design and Usability.