Cloud Foundry, www.cloudfoundry.com, is an open platform sponsored by VMware, born to support multiple frameworks, application servers and even multiple cloud providers. You may think on it as a core product that may be used as a foundation for more advanced cloud services.
Cloud Foundry is open source. This means that you can get and contribute to the platform, build it and run it in your own host. As an open source project it lives at www.cloudfoundry.org.
From Cloud Foundry site you may download a virtual machine with the live platform (the Micro Cloud Foundry) for your own use or request an account in the public, Internet-wide Cloud Foundry platform. Either one or the other, you will get the ability to run Java with Spring, Ruby on Rails and Sinatra, Groovy, Grails or Scala applications and leverage MySQL, Redis or MongoDB data services.
See the complete article at: http://deors.wordpress.com/2011/11/04/vmware-cloud-foundry/