Open Source Monitoring System for performance and availability.
Nagios network monitoring software is enterprise server monitoring
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Firewall log analyzer
Next Generation Open Source Firewall
Anti Spam SMTP Gateway
Linux IPOE Debian Custom
A free Usenet server with SQL backend and RBAC.
Enterprise-class, distributed monitoring solution for networks & apps
Xplico is a Network Forensic Analysis Tool (NFAT)
Linux Server and Data-Center WAN Optimization
Open Source SIEM
Energy and environmental monitoring of the server room
The Internet of Things
A high-performance and stable proxy for MySQL
A MAC address based user authentication system for campus-wide network
BGPHist stores MP-BGP updates activity and history into a database.
ss7mon an SS7/SIGTRAN signalling monitor
Weblooker monitors serveral services on multiple systems for their sta
OpenMPI tool for monitoring openMPI applications