Use Fring in your iPhone to make free international calls using Voipstunt. Just use Fring/Nimbuzz for making free calls using your SIP client. You can also make SIP calls using Voipstunt. SipGo offers standard SIP calls for any of the supported SIP/Voip service providers. Voipstunt also offers MAC/Linux application, so you can make free calls from mac/linux machine. SipGo is a standalone SIP dialer and offers free SIP calling solutions for individuals and businesses alike, just make sure you've got a registered account with a VoIP provider which supports SIP calls. SipGo is a low bandwidth sip dialer which offers the option to choose from several pre-configured providers (like VoipStunt, VoipBuster, SipNet and many others), or set up a custom SIP SoftPhone by simply filling in the details of your VoIP provider and your own credentials. VoipStunt VoipStunt offers a simple tool for OS X to make cheap phone calls.
To download the product, proceed to the App Store via the link below. Call anytime you want, anywhere you go with the SipGo softphone. Unfortunately, there is no direct download for the Mac version of CFC - Calls and SMS. Save on your calling charges by integrating the use of the SipGo SIP Dialer in your daily calling routine. SipGo offers perfect security and allows you to make crystal clear voice calls over any 3G or WiFi internet connection. The SipGo SIP Dialer is easy to use and can be set up in just a few seconds. Our Voip Softphone works with any popular VoIP provider. SipGo is your application for all SIP calls.