http://antimatter15.com/ajaxanimator/webstore.crx
If you run chrome --enable-apps and install it, you might be able to see an icon and magically be able to use the app offline. Or wait until the webstore is finally released and then you can just install it.
Edit July 10, 2010: Actually it was a while ago, but now the app works again and automatically restores the last state using localstorage.
Nice!, is it going to be free by the way?
Not sure, but you would still be able to use that link for free