Vopium today announced its latest application to the iPhone, enabling users to make free and cheap international calls. Powered by mobile VoIP and Wi-Fi technology, Vopium is now available in Apple’s App Store. continued »

A new version of fring is now available on the App Store, adding some functionality for "fringsters" to use this service on the original iPhone, iPhone 3G or iPod Touch. Using fring, you can interact with friends on all your favorite social networks including Skype, MSN Messenger, Google Talk, ICQ, SIP, Twitter, Yahoo! and AIM. continued »

After last week's rumors, Skype's iPhone client has been confirmed.  The VoIP software, which will be released on Tuesday March 31st, will be a free download and allow users to make free Skype-to-Skype calls over WiFi networks.  Alternatively, calls to landlines will cost 2.1 cents per minute. What won't be possible is VoIP over 3G.  According to Skype's chief operating officer, Scott ... continued »

Truphone has added Skype for iPhone and iPod Touch, allowing users to make calls and instant message other Skype users. This new features go live on next Monday, January 12. continued »

I'll admit that I don't make a ton of calls on my mobile phone, and generally don't worry about how many minutes I'm using. However, there are those out there that talk considerably more than I. For those people I give you iCall. continued »

VoIP company fring has announced what it's calling the world's first publicly available mobile VoIP app for the iPhone, putting the beta version out for download.  That means they've beaten rival Jajah - who recently announced their intention to release an iPhone VoIP client over the Summer - although Jajah are using the official SDK to develop their software whereas fring ... continued »

Back in 2007 there was a lot of talk about VoIP company Jajah and their attempts to bring a client to the iPhone; in the end, AT&T's definition of "conference call services" scuppered those plans and Jajah instead launched an iPhone-formated web interface for their ring-back service.  With the arrival of the official Apple SDK, however, Jajah are now apparently working ... continued »

A glimmer of hope for those iPhone owners who want a SIP-compatible VoIP client for their cellphones, as a collaboration between iPod Touch fan-site Touchmods.net and French ADSL ISP Free.fr results in a software client that allows their subscribers to make free phonecalls via their Apple device.  Called Siphon, the app is currently locked to the Free.fr network (the ISP ... continued »

Over at Apple-Touch.com, our iPod Touch obsessed sister-site, we've been gleefully watching the work of some VoIP-loving hackers as they not only developed a SIP-compatible app for the PMP but a plug-in microphone attachment to go with it.  Now they're turning their attentions to the iPhone, which has long been pretty much at the mercy of whichever carrier has exclusivity ... continued »

It's looking more and more likely that OS X Leopard is a biting cat rather than a petting one; while many are reporting that general system stability is improved with the Mac upgrade, others are finding that its over-enthusastic firewall is breaking VoIP and other network-dependent software.   continued »

If you've been waiting for a VOIP client for your iPhone - up until recently made extra-difficult by the fact that third-party software was blocked - then while you wait for the newly-unlocked, hacked & cracked handset to be fully exploited you might want to try Jajah.  A web-based VOIP offering, it offers cut-price calls not only through your iPhone ... continued »

It's not the first way to get Skype up and running on your iPhone, but it promises to be the most elegant (that is, until Skype themselves come up with a client): Shape Services have released a beta of their IM+ for Skype software that is compatible with any Java browser, including Apple's cellphone.  Right now the site is obviously ... continued »