OpenXenManager is a graphical interface to manage XenServer / Xen Cloud Platform (XCP) hosts through the network. OpenXenManager is an open-source multiplatform clone of XenCenter (Citrix).
The source code can now be found on GitHub using the homepage link below
mkvm.py is a python application that tries to tie Cobbler (https://fedorahosted.org/cobbler/), Puppet (http://www.puppetlabs.com/), and Citrix XenServer (http://www.citrix.com/xenserver) together to allow automated virtual environment rollout.