Infragistics, one of the top UI controls vendors, has recently launched Quince – a UX Patterns Explorer in Silverlight. You can explore various UX Patterns by User Tasks, Tag Relations, and Wireframe (i.e. arranged by their UI positions). Of course you can also search for a UX Pattern. Once you find the pattern you like, you can digg it, add to you Del.icio.us bookmarks, etc. Quince is a great example of using Silverlight’s vector graphics, rich interaction, and animation to provide a useful tool for designers and developers. Check it out!