OpenSpace 2010 is an free and opensource developpement environment, wich include a sysadmin-targeted module, and a embedded developpement module. Developpers welcome.
Open QEMU Manager is a web manager running on Linux. With Open QEMU Manager you can configure, admin and run one or more qemu instance on the target host. Different user and admin menues permit easily to sell Virtual Private Servers (VPS) based on QEMU.