Web based Game server control panel
DOCSIS network management
Energy and environmental monitoring of the server room
The Simplest Multi-User Latency Monitoring Web App
an 'auto-reply' bot for your mail server
Scalable, distributed monitoring system for high-performance computing
Drubuntu is the easy way to set up an extendable dev server for drupal
Configuration Management Database
Allow web server to serve files inside ZIP archive
MySQL Replication Monitor (written in PHP)
A free, easy to use, generic CMDB written in PHP
Simple web form for static assignment of DHCP leases
Simple web interface for Postfix domains, accounts, aliases