Internet bandwidth utilization monitor
Cisco switch port mapper
Simple software for port forwarding and routing w/o a hardware router
Windows tool for monitoring and configuring your network adapters
Free Syslog Server for Windows with a graphical user interface
SNMP MIB Browser for Linux platforms
network control and reporting
Remote Monitoring of Arduino from the Cloud
Visual Syslog Server for Windows with a graphical user interface.
Open Source BGP Looking-glass
KDE plasma applet to display network interface status
Logs IP to IP contact, number of packets, bytes.