The image stretch zoom has become the hello world application for multi-touch. Here is the same photo app with an easy to modify settings panel. You don't have to be a programmer to point it at your own photo set or change the size of the photos.
Multi Touch Flickr Viewer is built on the Adobe Air platform.
The 2000 Royalty Free Images library contains over 2000 royalty free stock images that can be used for your commercial and non-commercial projects.
