RemoteBox is a graphical tool which lets you administer guests or virtual machines running under VirtualBox on a remote server or even your local machine if desired. You may, for example, have a root server on the Internet, a server at home, or a server at work running VirtualBox but want to have the convenience of managing the guests easily from your local machine. The virtual machines run in headless mode, which means you don't need an active graphical display on the server but you can still connect and view the displays of the guests. The goal of RemoteBox is to provide a GUI that should be familiar to VirtualBox users while allowing them to administer a remote installation of VirtualBox. It does this via the VirtualBox API and SOAP interface, which are exposed when running the VirtualBox Web service. You can also use RemoteBox simply as an alternative interface for managing VirtualBox on your local machine.
VDE (Virtual Distributed Ethernet) is an Ethernet compliant virtual network that can be spawned over a set of physical computers over the Internet. VDE is part of the virtualsquare project. VDE includes tools such as "vde_switch" and "vdeqemu". vde_switch provides several virtual ports where virtual machines, applications, virtual interfaces, and connectivity tools can be virtually plugged in. vdeqemu works as a wrapper for running qemu virtual machines that connect transparently to a specified vde_switch. VDE is also supported by qemu-kvm (KVM, Linux Kernel Virtual Machine) in versions 0.12.4 and later using the -net vde command-line option.