Collects data about network useage using libpcap.
Batch system monitoring and archiving
Active-probing-based network IDS for wireless networks
Panel Indicator to interact and monitor hosts
Automated Bitcoin mining monitor and up-time enforcer
Firewall/Proxy FreeBSD
ss7mon an SS7/SIGTRAN signalling monitor
Geographical IP Correlation
Monitoring your infrastructure for free.
WatchTower is a cloud server monitoring and management tool