IPNetMonitorX is a network troubleshooting toolkit for optimizing performance.
BS Editor: IPNetMonitorX is a network troubleshooting toolkit for debugging Internet service problems and optimizing performance. Featuring 20 integrated tools, IPNetMonitorX is designed to help you quickly locate where the problem is and gather data which can be used to solve the problem either directly or through your Internet Service Provider.
Based on our award-winning IPNetMonitor Classic, IPNetMonitorX has been re-written from the ground up using Cocoa and BSD networking to bring these functions to Mac OS X. The tools included at this time are Address Scan, Airport Signal, Connection List, DHCP Lease, DHCP Test, DNS RBL, Finger, Interface Info, Link Rate, Lookup, Monitor, Name Server Query, Ping, Port Scan, Server Scan, Subnet Calculator, TCP Dump (including TCP Flow), TCP Info, Trace Route, and Who Is.
Please see the chart below for a comparison of the tools in OS X Network utilities. IPNetMonitorX is the most complete general purpose network debugging toolkit available for Mac OS X.