Karesansui is an open-source virtualization management application made in Japan. It’s smart graphical user interface lowers your management cost, and brings a total management/audit solution for both physical and virtual servers.
Free • Open Source
"The source code is still available, but this project is no longer in active development. We are currently seeking a new maintainer and any feedback would be appreciated. Please see here if you are interested in becoming a project maintainer."