WireframeSketcher can be used to design websites, desktop or web applications. Below you can find sample mockups and wireframes that show what the result looks like. You can also download .screen files and use them to find inspiration for your own designs.
There is also a growing user-contributed Mockups Gallery website. There you can find more useful snippets likes grids, iPhone and Android stencils and more.
iPhone stencil
Eclipse preferences
Grey boxes
This sample demonstrates how you can use a different font from default.
Search dialog
Page dimming technique
Source: Wireframes blog
