Truphone, VoIP on iPhone Comes First Than iCall

Truphone, a free application formerly known to make low-cost VoIP calls by the latest Nokia cellphones, it's ready also for the newest by Apple, the iPhone, just arrived in Italy.
The free download is available on the iTunes App Store website, or surfing directly on the App Store website by your iPhone.
Via Truphone it's possible to make VoIP calls using WiFi Networks or 3G cellphone network at really low rates, for example, to call Italy from every part of the world the rate is 0,10 USD/minute over landline phones and 0,50 USD/minute over mobile phones.
For more info visit the Truphone official website and the App Store official website.

iCall, iPhone, it's VoIP

Even the iPhone will have its special VoIP application, the software it's still in development and it will be released for sale or for free in the App Store, dedicated exclusively to the iPhone, merging into it, will allow VoIP calls using the Wi-Fi connection integrated into the phone so make free or paid VoIP calls, depending on the destination Country.
iCall is available also like a Windows 2000/XP/Vista software (see the download page) and, at the moment, it allow free VoIP calls over US and Canada, with a 5 minutes time limit per call for the Basic version of the software.

Link: www.icall.com