Satori Group uses XenServer, XenApp or Citrix Access Essentials to simplify and streamline delivery of their solution to their customers using Citrix virtualization technologies.  Nice implementation of the VADA concept.   

“Working closely with Citrix and Microsoft, Satori Group developed a virtual appliance for delivering a complete application solution to customers. Virtual appliances are preinstalled, pre-configured, ready-to-run enterprise applications packaged with an operating system inside a virtual machine. In contrast, a virtual machine, by itself, does not include applications.”

Full release: Satori Group Partners with Citrix to Create Virtual Appliances for Turnkey Application Delivery