Designed to find the names of all the routers an IP packet passes through on its way from your Mac to a destination host.
Ipfw firewall management frontend with bandwidth tuning, NAT setup, port redirection...
WhoIs Analyzer Pro provides access to contact records and other information.
QuickWho provides a rich array of information about specific Internet domains that surpasses other command-line, GUI or web-based "whois" tools.
Open source network toolbox for Mac.