VoIPsurfer allows you to make real phone calls via WiFi/Internet (VoIP). The trial version lets you make free one-minute phone calls to landlines in the UK and US amongst other destinations. VoIPSurfer can be used in a corporate, private, or public WiFi environment with no setup hassles at all. It can help cut down your phone cost tremendously. Up to four VoIP providers can be used at a time, giving you the freedom of choice to pick different ones for different destinations. You may place calls via the integrated phonebook or your Pocket PC's own one. Redial, call lists, and speed dial aren't missing either. VoIPSurfer is ideal for connecting to your own Asterisk server as well, as it uses the IAX protocol.