Comment e44.us runs on Google App Engine (Score 2, Interesting) 224
The source code is available on e44.us/1.
You can "log in" with your gmail account so one day you can edit your short links.
Anyhow, it's a simple app for now but if there is interest in a "community" OSS project, we can add cool features like, make personalized forms of the app (urls like e44.us/fred/1) or even your own domain (which you can do now with a Google Apps account), optimize it for mobile phones, validate access to URL's etc etc. If you're interested, let me know.