VMware vCloud SDK's provide easy interfacing with the vCloud REST based API's with a variety of language bindings (Java, .NET & PHP). It brings the REST based vCloud API in the world of Java, .NET & PHP developers by providing easy to use client side representation of vCloud resources and hiding the details of REST, XML and HTTP.
VMware vCloud SDK for Java 1.0
http://communities.vmware.com/community/developer/forums/vcloudsdkjava
VMware vCloud SDK for .NET Beta
http://communities.vmware.com/community/beta/vcloudsdk-net
VMware vCloud SDK for PHP Beta
http://communities.vmware.com/community/beta/vcloudsdkphp