Open Source Monitoring System for performance and availability.
TraceMAC is a command-line Layer 2 traceroute for Cisco switches
Windows tool for monitoring and configuring your network adapters
Ping monitoring tool (32 Bit) for any Windows System (x86 or x64)
Pinger alert, STATICTICAL TABLES, send EMAILs or SMS by SMS GATEWAY
A powerful WOL, ping, shutdown, GUI application.
The Network Forensics Tool