Unlimited Free calls software (Fring)

http://www.fring.com/
The fring™ mobile VoIP solution maximizes use of the internet capabilities embedded within a subscriber's handset. The fring solution establishes a peer-to-peer VoIP connection between calling parties, enabling true VoIP sessions between fring enabled handsets and also between handsets and PCs.

fring is based on a unique thin-client technology that for the first time enables true VoIP over 3G, GPRS and WiFi networks. fring dynamically adapts itself to the optimal network and handset characteristics while enabling seamless roaming VoIP on multiple networks. The dedicated three-sided P2P network architecture has been developed to support near telco-grade voice quality and network efficiency.

fring leverages the internet connectivity traditionally used for mobile email retrieval and web browsing to provide mobile VoIP communications so you can talk and instant message for free!

Check more info on the web...

thanx 4 sharing bro