With a Dedicated Server running Proxmox VE, you can build and deploy your own Linux VPS Systems.  Here is a list of some of the Linux Operating System Tempaltes Available:

• Debian 4.0 Standard
• Debian 5.0 Standard
• Debian 6.0 Standard
• Ubuntu Hardy Standard
• Ubuntu 8.04
• CentOS 5 Standard
• CentOS 4 Standard
• Fedora 9 Standard
• OpenSUSE 11

There area also a number of Application Tempaltes Currently available including: SugarCRM, Zenoss, MediaWiki, Acquia Drupal, Drupal, Joomla!, Zimbra, RT Request Tracker, WordPress, BlueOnyx, eyeOS, FrontAccounting, Moodle, OpenGOO, OrangeHRM, SimpleInvoices, vTigerCRM, PBX in a Flash, FreePBX, SMEServer KVM, X11 Terminal Server

For more information and up to date release info visit: http://pve.proxmox.com/wiki/Get_Virtual_Appliances

Also here is a listing of standard OpenVZ Templates: http://wiki.openvz.org/Download/template/precreated