VoIP client with support for SIP and similar to the iPhone interface.
Would you like to have an iPhone before anyone else? For it will not be able to be but at least it does have the illusion of having a virtual one, since the iPhone is the theme chosen by the client for VoIP interface.
Beyond its aesthetic nailed to the iPhone Softphone is a VoIP client that uses SIP VoIP protocol free to use and very popular today. The protocol is chosen by Gizmo, the most powerful alternative to Skype, and many VoIP providers available in the market.
So SoftPhone can be configured with any SIP VoIP account you have. In terms of usability, it is good thinking, especially the integration of our address book that provides everything. In the future, they plan to implement a feature that would allow users to send SMS between SoftPhone.