This is an old revision of the document!
iPXE is provided as a standalone software product; you can download and use it as a PXE ROM or you can deploy it on your network using chainloading. iPXE has also been integrated into many larger products, some of which are listed here. 1)
xCAT is the Extreme Cloud Administration Toolkit, a project originally by IBM offering complete and ideal management for HPC clusters, RenderFarms, Grids, WebFarms, Online Gaming Infrastructure, Clouds, Datacenters, and whatever tomorrow's buzzwords may be.
xCAT uses iPXE as part of the deployment process for cluster nodes.
The Xen hypervisor offers a powerful, efficient, and secure feature set for virtualisation of x86, x86_64, IA64, ARM, and other CPU architectures, and forms the basis of products such as Citrix XenServer.
Xen uses iPXE to enable network booting of virtual machines running within the Xen hypervisor.