Hi, Loupe is an image gallery application that syncs with your flickr photostream. So far you can display tags, sets and your photostream via this application. It also supports tag based search of your photostream.
To get the application go to : labs.enygmatic.com/node/2 For a live demo go to : photos.enygmatic.com
Loupe is written using Rails and the rflickr wrapper for the flickr API.
Let me know what you think of this application.
Regards, Elroy Serrao