Israeli company Fring has introduced the first native, true VoIP application for the iPhone. The application doesn't require users to route their calls through an analog VoIP bridge, like previous iPhone VoIP apps have. Using either SkypeOut or SIP, users can call landline/mobile numbers and even IM using Skype, Google, ICQ, MSN, Twitter, AIM, and Yahoo. Of course, users will need a jailbroken iPhone to use the application, but given the fact that Apple has vowed not to shut down VoIP over WiFi apps, we should see a legitimate version of Fring after Firmware 2.0 lands in June.

For more on Fring:
- see this press release [1]

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- VoIP developers fire up for iPhone iPhone VoIP story [2] 
- Jajah developing VoIP for iPhone iPhone and Jajah story [3]