SolusVM - Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ...
winflector - With this application you can create your own terminal services.
VMmanager - VMmanager is a QEMU/KVM server virtualization management software, which presents perfect tools for creating virtual machines, providing VPS services, and building cloud infrastructure.
flexVDI - The Open Full-Stack VDI Solution
Xen Orchestra - A complete web UI for controlling a XenServer or Xen infrastructure.
Parsec - Streams games locally or over the internet