Red Hat OpenShift
OpenShift provides developers with a choice in languages, frameworks, and clouds to build, test, run, and manage Java, Ruby, PHP, Perl and Python applications. Developers can also choose the cloud provider the applications will run on.
See also "Red Hat Debuts CloudForms and OpenShift for Cloud Deployment" on ServerWatch.com.
Also see "A Cloud Computing Dictionary Resource" and "Cloud Computing White Papers and Resources for Small Businesses" on Webopedia.com.