The New Network Analyzer PowerToy for Windows Mobile 5.0 Pocket PCs and Smartphones, contain tools such as ping and ipconfig that you can run from within your device. Handy tools which should have been default on these devices. Very useful when trying to troubleshoot network connectivity since Windows Mobile devices nowadays have so many different network stacks (WiFi, Edge, 3G, UMTS, EVDO, etc)

 

You can download the PowerToy here.