Pulling together various online user interface pattern libraries into one place for folks to link to and use for their projects. Enjoy!
>> flickr set by FactoryJoe : fantastic sets of screenshots from modern recent websites, apps, etc. highly rec!!
>> 43 essential controls for web apps by Theresa Neil
>> Designing Interfaces by Jenifer Tidwell (based upon her book)
>> Designing Web Interfaces by Bill Scott (based upon his book)
>> RIA screen design patterns by Theresa Neil
and lastly (sigh) Quince. Why do I sigh? It requires Silverlight 3 (here’s the plain HTML site), and in my view is a mess of interface design: visuals, information design, and the various interactions. Clearly built by (MSFT?) geeks for geeks in a pastiche manner. But it is a popular aggregator of UI patterns which are useful, that can’t be denied.