OpenQRM
France
openQRM is the next generation, open-source Data-center management platform. Its fully pluggable architecture focuses on automatic, rapid- and appliance-based deployment, monitoring and high-availability and especially on supporting and conforming multiple virtualization technologies. openQRM is a single-management console for the complete IT-infrastructure and provides a well defined API which can be used to integrate third-party tools as additional plugins.
Initially developed on the Java platform, OpenQRM has been ported to PHP from the 4.0 version.
Site Link: http://openqrm.sourceforge.net/