The alternatives to Eucalyptus seem not to be here just yet. I suggest that you get in contact with the Cloudkick guys. If I understand correctly, the purpose o

The alternatives to Eucalyptus seem not to be here just yet. I suggest that you get in contact with the Cloudkick guys. If I understand correctly, the purpose of their business is to integrate different cloud providers (Amazon and VPS'es) so that you won't have to (do this on your own). They have just launched, at the moment only support Amazon and plan to support Slicehost. Talk to them, it might be beneficial for both of you.