Core-Admin is an extensible solution for server and device administration that integrates into a single solution powerful administration panels, an external and highly detailed internal checking engine, and an event notification system that will allow you to track the state of all systems connected to a central console to the minute.
Collax V-Cube+ is a HA cluster management suite based on a 64bit Linux system and KVM to provide server virtualization. It offers solutions for single virtualization hosts, as well as high availability management on two or more nodes, allowing embedded HA storage using DRBD and iSCSI. By using live snapshots, automatic live migration, and incremental backups, the availability of virtual machines is increased tremendously in case of hardware and software maintenance or even hardware failures. Virtual network switches and the protocols GVRP, LLDP, and RSTP help to set up a virtual DMZ.
Tivima (Tiny Virtual Manager) is a simple Web administration tool for managing virtual machine hosts running KVM. It is not meant to manage large cloud farms or huge datacenters with thousands of servers, but is for small to mid-range organizations that wish to manage their libvirt/KVM hosts centrally from a Web browser. Tivima aims to be distribution independent.