Find your self

If you live in the state you can get an arial photo of your house. This is old technology but sure is cool. You can use webservices to integrate into your own application.

http://terraserver.microsoft.com/

uml editor

I found a very cool UML editor.

It's written in java, and based off of argouml ( an OpenSource project)

Poseidon for UML
Community edition is free!