Sewing Patterns and clothing patterns from SewingPatterns.com including clothing patterns and dress patterns from simplicity patterns.
http://www.sewingpatterns.com/

Welcome to the Yahoo! Design Pattern Library. We're thrilled to be sharing patterns and code with the web design and development community, we hope it's useful, and we look ...
http://developer.yahoo.com/ypatterns/

patterns & practices: Use Microsoft's proven practices for software engineering. Bookmark on MSDN Social
http://msdn.microsoft.com/en-us/practices/default.aspx

A wiki with principles, gotchas, frameworks, and common techniques. Also the homepage for the "Ajax Design Patterns" book.
http://ajaxpatterns.org/

In software engineering, a design pattern is a general reusable solution to a commonly occurring problem in software design. A design pattern is not a finished design that can be ...
http://en.wikipedia.org/wiki/Design_pattern_%28computer_scie ...