A small fast Template Engine for PHP, without a huge framework.
OPTOSS Next Gen Network Management System (NG-NetMS)
REST interface and configuration GUI for Nagios
Webinterface to (un)ban IPs in Fail2Ban
PotHead
A client for the MikroTik RouterOS API protocol, written in PHP.
Open Source SIEM
Open source tool to monitor your servers and websites
Netflow visualisation and investigation tool
Computer security tool for the information gathering stage
Open source voucher management / hotspot system
DOCSIS network management
Energy and environmental monitoring of the server room
Scalable, distributed monitoring system for high-performance computing
The Simplest Multi-User Latency Monitoring Web App
Visual Network Management System
Simple web form for static assignment of DHCP leases
NfSen plugin to generate and analyze per-IP statistics