free netflow analyzer
Fritz!Box SmartHome Monitoring with PRTG and AHA-Interface
Enterprise-class, distributed monitoring solution for networks & apps
PotHead
Webinterface to (un)ban IPs in Fail2Ban
network control and reporting
BGPHist stores MP-BGP updates activity and history into a database.
A simple cacti viewer for smartphones
Dashboard of network top-talkers using netflow sources
Weblooker monitors serveral services on multiple systems for their sta
Monitoring your infrastructure for free.
MAG Server stands for Monitor And Graphing Server. [VM Appliance]
AlertOnFailure was inspired by XYmon, a Big Brother Compatible Monitor