<a href="http://bitbucket.org/ianb/toppcloud/" rel="nofollow">http://bitbucket.org/ianb/toppcloud/</a> : Python :: <a href="http://github.com/wr0ngway/rubber/" rel="nofollow">http://github.com/wr0ngway/rubber/</a> : Ruby ?<p>Toppcloud is presently Rackspace-only and Rubber is AWS-only, but they both intend to be multi-service. Rubber seems a lot further along, I'm using it for a customer project I'm working on right now. Having written a project for AppEngine, I don't think either is very much like it -- more a way of getting rid of customized disk images and integrating the bootstrapping scripts with the deploy scripts.