you can build this from the query service (REST API).
you can request all vApps from a specific org, then parse the vApps to list all the VMs/information.
I'm looking for something similar -- is there any type of health check available for vCD? I've seen these but they are 2 years old.
http://www.virtu-al.net/2012/03/13/vcdaudit-for-vcloud-director/
http://www.virtuallyghetto.com/2012/01/vcloud-director-report-100.html
Thanks!
I've built this long ago, source is on github too, hopefully it could fit your needs.
