We testing some software that looks pretty nice. It doesn't have cpanel but does have the ability to install any Linux OS so cpanel is possible. It does come with something much like cpanel and the developer boasts this on their site:
World's lightest and the most efficient webhosting platform. A revolutionary platform that finally makes vpses affordable to all.
Key Features
Based on Lighttpd, djbdns and pure-ftpd
Transparent Migration to Apache, if needed
9MB RSS and 15MB memory usage on bootup on openvz.
Feature complete: has http, https, smtp, pop, imap, webmail,mysql, php, cgi, dns, spam, ftp,crond, directory protect, mailing list, web site statistics
Based on php5 and mysql5
Daily Updates
Scale to million hits per day, using fastcgi
Blazing php performance using php-fastcgi
Per domain configuration of cgi or fcgi
Advanced Backup/Restore
Parked/Redirected Domains
Integrated application Installer with Growing list of applications (48)
Demo:
http://demo.lxadmin.com:7778/
We have one server up and running with it installed, but it will not be the master server for accounts when it gets offered. The eventual server will be much beefier than the test server its running on right now.