SysCP is also an admin panel for hosting web services. It provides a web-based management for internet services. Its goal is to provide a software which enables the Administrator to easily manage his server from within a Web-browser.
Here are the applications that it manages:
* Apache, Apache 2.x, Lighttpd
* Bind9, PowerDNS
* Courier, Dovecot
* Postfix, Exim4
* ProFTP, pureftp
* Awstats, Webalizer
Note that this is the only list that offers alternatives to Apache, Bind, AWStats and Courier / Cyrus.
It offers as a service and more:
* Email Template
* Newsletter for customer and reseller
* Log in using the panel
* Custom Error Pages
* Support for DKIM DNS records & / SPF
* Multi-lingual
* Application Installer
* Incident Management System (ticketing)
* Third Module:
o module for Mailman mailing lists
o WebFTP SysCP with style
o Amavisd-new policy module
o Backup module
o Fetchmail module
o Maildrop Module
o Mailtraffic module
o Offer Module
o SpamAssassin settings module
o Roundcube, Squirrelmail and Other Webmailers Supported
SysCP seems really interesting and complete solution, which differs from the others and would be able to use Lighttpd, PowerDNS and Dovecot.

VHFFS is a set of tools to manage a web hosting platform initiated by pooled TuxFamily I think, but I am no longer using this interface, however when I was using this platform for shared hosting on several shared servers, the performance shown by this interface was pretty impressive.
Here is a list of its features:
VHFFS is freely distributed on the ftp server. In addition VHFFS is designed to work with the free operating system Debian GNU / Linux. VHFFS was developed to run on that platform. According to my knowledge VHFFS does not work on another platform, but if anyone wishes to bring VHFFS on another architecture, it is free to do so. As it is an “open source” by design, so anyone who wishing to help to improve this software can participate in its development.

VHCS is an open source control panel for managing GNU/Linux Servers. VHCS cope up web services, webmail (POP and / or IMAP) FTP, DNS, database, Quota, Traffic for administrators, resellers and owner of domain names. Additionally, VHCS is licensed under the Mozilla Public License (MPL).
Here is a list VHCS features:
* Data server utilization
* Management of multiple IP
* Changing the logo
* Interface Theme
* Multi-language
* Managing logs
* Log2mail – Send logs by mail optional
* SSL Certificate Management
* Data on traffic and disk space
* Management of incidents with three levels of support
* Full Control Reseller
* Detailed statistics for resellers
* User management
* Email management standard template for new dealers
* Set pre-defined settings for end users
* Transfer Domain Name
* Managing POP3
* Transfer mail management
* Autoresponder for emails
* FTP accounts management
* Online File Manager (WebFTP)
* Management of MySQL databases, users and queries – PhpMyAdmin
* Management of individual error pages
* Log files of custom Apache
* Statistics – AWStats
* Backup and restore
* System auto-update
* Antivirus
* Template Apache and Postfix
* Template for accommodation
o definition of use of disk space and traffic
o Number of domain aliases and subdomains
o number of email account
o number of FTP account
o number of MySQL databases
o Management of permissions and PHP CGI
o Management of individual error pages
o Log files custom Apache
o Backup and Restore
o Webmail
o Online File Manager (WebFTP)
VHCS is yet another complete solution for web hosting management.