This area is for the collection of interface patterns and widgets. If you come across something useful, well-designed etc. please add it here.
There are lots of stuff on pattern libraries on the web. Here's an overview for good starting points:
The Classic
First of all, a link to the classic tome from whence the pattern idea came:
Christopher Alexander: A Pattern Language
http://www.amazon.co.uk/exec/obidos/ASIN/0195019199/qid%3D1121169684/202-3193729-1127045
Standard Web Design
Yahoo Interface Patterns Library
http://developer.yahoo.net/ypatterns/
An Introduction to Using Patterns in Web Design
Good article on 'chunks' (as a simpler form of patterns) by 37Signals.
http://37signals.com/papers/introtopatterns/
Welie Repository of Web Design Patterns
http://www.welie.com/patterns/
Website Patterns
http://iawiki.net/WebsitePatterns#PatternRepositories
Comprehensive resource list from the IAWiki.
Widgetopia
Christina Wodtke's (of Boxes and Arrows type fame) widget blog. Good resource. Includes both good and bad design examples. A bit abandoned of late but still very useful.
http://www.widgetopia.net/
Ajax
Design patterns for Ajax Usability
http://www.softwareas.com/ajax-patterns
This article now lives on in the Wiki below:
Ajax Patterns Wiki
http://www.ajaxpatterns.org/
Ajax and Interface Design
LukeW's very good article that puts Ajax patterns into a historical perspective.
http://www.lukew.com/resources/articles/ajax_design.asp
General Application Focus
Jenifer Tidwell's pattern page
Tidwell is an MIT researcher and well known for her interface/pattern stuff.
http://time-tripper.com/uipatterns/index.php
The Brighton Usability Pattern Collection
from the Usability Group at Brighton Uni
http://www.cmis.brighton.ac.uk/research/patterns/home.html
The Diemen Repository of Interaction Design Patterns
This is a Wiki where not a lot seems to be happening. Strange because it is quite well known. Oh well...
http://www.visiblearea.com/cgi-bin/twiki/view/Patterns
Experiences - A Pattern Language for User Interface Design
http://www.maplefish.com/todd/papers/Experiences.html
User Interface Design Patterns
http://www.cs.helsinki.fi/u/salaakso/patterns/
Here's a comment from the otherblog on this one: http://dev11.otherworks.com/theotherblog/Articles/2005/04/25/cWvDHkrava
Specialised
Visualisation Patterns
This is a pattern repository for data visualisation.
http://www.cs.bham.ac.uk/~bxw/vispatts/
This link doesn't work any more. If anyone knows where it's moved to please post a message.
But probably the best resource for this topic is Edward Tufte's site anyway - on which you will also find complete_drafts for the chapters of his new book "Beautiful Evidence".
http://www.edwardtufte.com/bboard/q-and-a?topic_id=1
