Light-weight system monitor for X
SQL operating system instrumentation and monitoring framework
Open Source Monitoring System for performance and availability.
Count the number of people around you by monitoring wifi signals
Continuously monitor server connections
Open Source SIEM
NETAPI detector connections and directory changes
Acquires external IP address from command line
Is your host up or down?
...has moved to packetpeeper.org
Recursive mapping/discovery of network devices via CDP/OSPF
Wait for a network device to come online and run an associated script