OpenVZ web panel
If command line management of openVZ containers is not required then one can install OpenVZ web panel from https://code.google.com/p/ovz-web-panel/ using a single line installation command:
wget -O - http://ovz-web-panel.googlecode.com/svn/installer/ai.sh | sh
Various features of OpenVZ web panel are: 1. Support for users with different permissions 2. Allows creating new OpenVZ templates and the same can be then used using drop-down menu for creating new instances. 3. Logs important actions 4. Supports multiple physical machines and allows migrating containers from one machine to another 5. Various resource limits for each container can be configured. 6. Automated backup and restore of containers based on schedule. We can also take manual backups. 7. Requests feature where users can make requests (probably for creating new container etc.) and administrators can respond to request and close them.
The only draw back is that containers created using vzctl etc. are not shown when a new host is added. Thus OWP assumes that only its interface would be used for management of containers. This restricts use of command line for various types of automation.