User Interface stencils
Web Form Elements
Edward Anastas has put together a handy stencil composed of often-used elements in HTML and web page forms: radio buttons, checkboxes, combo boxes, entry fields and text areas. Nice looking and Aqua, to boot.
Flow Map Shapes
We make flow maps daily to visually represent how users move through a system. We find that maps which depict screens and the results of user actions from those screens are easier for our clients to understand than the long text-heavy documents usually produced during the definition phase of most large web site projects. Most...more
UML 2
Additional UML diagram tools, esp. for Use Case and Activity diagrams. There is also a Domain object for class domain or namespace groupings in Class and Collaboration diagrams.
Windows GUI Design
User interface elements for the Windows operating system, in case you have to design an interface where Aqua widgets are considered a strange and mysterious concept, and licking them is totally out of the question.