Vesta Control Panel - – What I love about Vesta is that it's fast and easy to use
Unimus - Unimus is a Network Automation and Configuration management (NCM) solution designed for fast deployment network-wide and ease of use. Unimus does not require learning any abstraction or templating languages, and does not require any coding skills.
Control Web Panel - (Former CentOS Web Panel) Free & PRO Linux Web Hosting Control Panel
Oxidized - configuration backup software (IOS, JunOS) - silly attempt at rancid
cPanel - With its first-class support and rich feature set, cPanel & WHM has been the web hosting industry's most reliable, intuitive control panel since 1997.
RANCID - RANCID - Really Awesome New Cisco confIg Differ.