Fring -- Free Mobile VoIP, IM and More

Fring is a peer-to-peer Mobile VoIP based internet telephony network which enables users to interact with social networks and to call and chat for free.
Recently it also launched an API, allowing third-party developers to develop new applications for the community.
clipped from en.wikipedia.org
clipped from www.fring.com

fring™ is a mobile internet service & community that enables you to access & interact with your social networks on-the-go, make free calls and live chat with all your fring, Skype®, MSN® Messenger, Google Talk™, ICQ, SIP, Twitter, Yahoo!™ and AIM®* friends using your handset’s internet connection rather than costly cellular airtime minutes.
clipped from www.fring.com
Take all IM buddies mobile and view from them one, integrated contact list

Free calls

Live chat instead of SMS
Call landlines and regular cellular contacts using SkypeOut or SIP
clipped from www.youtube.com
How to make a free call using fring
clipped from www.youtube.com
fring on iphone
clipped from www.fring.com

fringAPI shares fringing freedom with web developers

clipped from www.blonde2dot0.com

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fring – Make free mobile calls, IM with Skype, MSN Messenger, ICQ, Google Talk™, SIP & Twitter, AIM® & Yahoo!™
Fring - Wikipedia, the free encyclopedia
fring » fringAPI shares fringing freedom with web developers
Blonde 2.0 » Blog Archive » fring Releases Open API to Enable New Mobile VoIP Apps [Israel Media Tour]