What websites (not books) document designs (UML or otherwise) for software applications?
Building architects have many resources available for inspiration and construction. I do not seek resources on constructing software (such as Meyer's Object-Oriented Software Construction), but rather examples of designs for software components or class diagrams that can be used as a starting point for developing an applcation.
Example applications might include:
The Design Patterns book is a good start, but a bit too low level.
Grady Booch has a great site for just this thing at http://www.handbookofsoftwarearchitecture.com/index.jsp?page=Main
But you do have to register to look at the diagrams.