Visual Syslog Server for Windows with a graphical user interface.
Monitor SNMP hosts with a sysfs-like filesystem in user-space
Capture and display SIP and DIAMETER messages
A program for monitoring a DSL connection
...has moved to packetpeeper.org
Batch system monitoring and archiving
Icmp Pinger
Open Source BGP Looking-glass
Panel Indicator to interact and monitor hosts
Automated Bitcoin mining monitor and up-time enforcer
provides monitoring work of the system distinguishing by applications
Daemonlogger is a packet logger and soft tap developed by Martin Roes
Bandwidth Monitoring Tool; Console SNMP traffic monitor
Tool for identifying Network Service Dependencies
Monitoring your infrastructure for free.
NDPMon - Neighbor Discovery Protocol Monitor
Network monitoring tool