2015’s Ultimate Guide to Web Panels - cPanel vs. Plesk vs. Webmin vs. Others - HostingAdvice.com
▻http://www.hostingadvice.com/blog/cpanel-vs-plesk-vs-webpanel
In general, most control panels implement a common set of features. While most will implement some subset of these, there are a few that include them all.
Web hosting control panel software may provide access to:
Domain name system management (web domains, mail domains, etc.)
Email system management (email addresses, email quotas, spam prevention, etc.)
FTP management (user accounts, password management, file system quotas)
Web-based file system access
SSH user/key management
Database management (MySQL, PostgreQSL and sometimes other database systems)
Backup management
Logfile access and reporting
A plugin system for configuring additional services and installing applications (i.e., a blogging application like WordPress)
Comparison of web hosting control panels
▻https://en.wikipedia.org/wiki/Comparison_of_web_hosting_control_panels
froxlor Server Management Panel (GPL)
▻http://www.froxlor.org/index.php