NetCut - NetCut is a Software that helps you admin your network by purely on ARP protocol.
XArp - XArp – Advanced ARP Spoofing Detection XArp performs advanced ARP spoofing detection mechanisms – made to secure your network.
CSArp-Netcut - An arpspoofing program that lets users launch spoofed arp requests to disrupt connections in a LAN
Paessler PRTG - An advanced network monitoring solution to monitor network up/downtime, traffic and usage.
SelfishNet - Block anyone or any device from using your internet
Zabbix - Track, record, alert and visualize performance and availability of IT resources