Citrix Receiver is a desktop client application, it works on all popular operating systems and lets you connect your Xen Servers from your laptop, smartphone or tablet PC. Xen is the most popular virtualization technology these days and most of the production applications are hosted on Xen based infrastructures now. So if you have any Xen based servers and want to manage them using an easy to use interface, you need to have Citrix Receiver desktop app installed on your local device. Once done, you will be able to connect your Xen Servers and perform all required operations on them. It is available free of cost.