fring

fring™ is a free application that lets you talk, live chat (IM) and send& receive files using your handset's Internet connection instead of costly mobile airtime (GSM) minutes. fring enables free mobile calls over Wi-Fi Internet access or your GPRS, EDGE or 3G Internet data plan.

fring lets you easily communicate with all your fring, Skype®, MSN® Messenger, Google Talk™ , Twitter, Yahoo!, AIM and regular phone contacts from one, integrated & searchable contact list. fring also supports SkypeOut and hundreds of SIP-based services such as GizmoProject, VoipCheap, VoipStunt, Free World, even from non-SIP enabled handsets, enabling cheap local and international VoIP calls to contacts’ PCs, mobile phones and landline numbers. Enhanced with real-time contact availability (presence) fring let’s you see who’s online before dialing.

All you need to use fring is a 3G handset with Internet connectivity that is already available from your mobile service provider or through your nearest Wi-Fi hotspot. fring is PC-independent, does not require any proprietary hardware or airtime, and works with phones purchased through any mobile operator. fring is as easy to download as a ringtone and is simple to install and use.