1)   Free Axence NetTools 3.2
A comprehensive set of FREE network tools: Port/Network Scanner finds all the nodes in a network; NetStat lists local connections; Service & Port Scanner checks for all open ports and running; TCP/IP workshop, NetCheck, ping, trace, lookup, bandwidth
network monitoring, host monitoring, ping, visual, graphical, trace, traceroute, lookup, network scanner, port scanner,

 2)   Free IP Tools 4.2
Free IP Tools is a convenient way to keep all important network utilities in one place. Twelve essential network tools inside a single user-friendly application. Troubleshoot network problems with this free collection!
ping, traceroute, tracert, portscan, port scanner, host alive, host monitoring, server monitor, verify email, check email,