Webmin - Webmin is a web-based interface for system administration for Unix.
WebFaction - Hosting for developers: full shell access to fast servers with all your favorite tools pre-installed and maintained for you.
AlternC - AlternC, Web and Mail Hosting software control panel.
AceCloudHosting QuickBooks Hosting - Future-Proof Your Business with ACE Cloud and Security Synergy
ServerPilot.io - Centralized hosting control panel for Wordpress and PHP web sites
Sentora - Sentora is an open-source web hosting control panel built specifically to work on a variety of Linux distributions. Sentora is licensed under the GPL and is a separately maintained fork of the original ZPanel project.