* unxsVZ OpenVZ Multiple datacenter infrastructure manager for CentOS: [http://openisp.net/openisp/unxsVZ unxsVZ Trac Wiki] | Includes autonomic UBC adjusting, traffic and stats graphs. Supports hot-cold container clones, remote datacenter backups, IP and other resource management, container set group commands, NAT, and many advanced features. Very active development. Allows one or two staff to manage more than 1k containers on dozens of nodes across multiple datacenters. Installs via yum. GPLv2 licensed.

* VirtuoCP (formerly Vtonf): [http://sourceforge.net/projects/vtonf/ homepage] | According to the documentation only runs on CentOS 4.5 or higher. Last update 2010-10-17.

== Proprietary / non-free == <!--T:6-->