Essential NetTools
Essential NetTools is a set of network tools for diagnosing networks and monitoring your computer's network connections.
NetStat: displays the list of your computer's network connections, information on open TCP and UDP ports, IP address, and...
SmartWhois
SmartWhois is a useful network information utility that allows you to find out all available information about an IP address, host name, or domain, including country, state or province, city, name of the network provider, administrator and...