If you want to try a few Google App Engine application for developing RIA Flex application using DjangoAMF or PyAMF. And you don’t want to mess with Google or use up your three apps quote on GAE, you might want to try AppDrop.
AppDrop is a proof-of-concept, to show that Google’s App Engine platform can be ported to other hosts. Unlike Google’s project, we make no claims to be able to scale beyond a small amount of traffic. We reserve the right to shut the whole thing down at any time. We’re running on EC2, so our virtual machine could just disappear. We hope you enjoy AppDrop.
Again, this is a nice playground, if you play a lot and need wilder sandbox.