Germans Doesn't Like iPhone VoIP

In Germany, the T-Mobile, a big multinational company related to mobile network, seems have some annoyance for the use of VoIP over the iPhone, precisely with the service offered by SipGate, because it encourage operations named "jailbreak" (a description of this procedure it's available in this page), and then tamper the iPhone via software.
I have the feeling that the cheap VoIP begins to make some trouble to the big multinationals, that certainly will take some measures to protect themselves, even if more than a measure, it seems an egoistic monopoly.

Also Fring Prepare VoIP For The iPhone

Even if in pre-release version, the popular Fring it's ready to land on the iPhone, Fring is a instant messaging software dedicated to mobile phones, smartphones, handheld devices and it support protocols like Skype, MSN Messenger, Google Talk, ICQ, Twitter, Yahoo! and AIM, it allow to make VoIP calls via a SIP provider or using the SkypeOut and SkypeIn service.
Fring works perfectly with WiFi networks (if supported by your device) or by using the Internet connection of your device, the rates for calls over landline phone and cell phones vary depending by your VoIP SIP provider or by SkypeOut fee, if you're using this one.
The download page dedicated to the iPhone show all the necessary instructions to download, install and set up in some easy steps your iPhone with Fring.
However, on the Fring website it's possibile to choose your cellphone brand and model and download the appropriate version.

Truphone, VoIP on iPhone Comes First Than iCall

Truphone, a free application formerly known to make low-cost VoIP calls by the latest Nokia cellphones, it's ready also for the newest by Apple, the iPhone, just arrived in Italy.
The free download is available on the iTunes App Store website, or surfing directly on the App Store website by your iPhone.
Via Truphone it's possible to make VoIP calls using WiFi Networks or 3G cellphone network at really low rates, for example, to call Italy from every part of the world the rate is 0,10 USD/minute over landline phones and 0,50 USD/minute over mobile phones.
For more info visit the Truphone official website and the App Store official website.

AdPhone VoIP

AdPhone, formerly Sgoope, is a software for VoIP calls freely downloadable from the official site, in poor words, it allow to make free calls over landline phones, for a maximum of 30 minutes per day, to the enabled destination countries in this page, on the website it's specified, written in small fonts: "The first 2 minutes per call are free. You cannot call the same number for free more than once every 10 minutes".
This software allow to make free calls because it use visual ADS (advertisements not intrusive for your operating system) while we call.
Result unhandy the procedure used for adding new contacts and for set some software options, that open a web page in your predefined Internet browser.

Link: http://www.adphone.com

VoipRaider - The Family Enlarge Itself

I found them almost perchance, VoipStunt, VoipWise, InternetCalls...
VoipRaider's features are nearly identical to the ones of VoipWise, different graphical interface as like the different official website but the network and the functionality are equal to the ones of its clone softwares.
Just try to download and install both VoipStunt and VoipRaider, sign-up with both ones, it's not possible to use the same username for one and the other, I presume that the network and the sign-up servers are the same for all, after that from VoipStunt add a new contact specifying the username you choose for VoipRaider sign-up process, there you are in the list.

How To Intercept VoIP Calls

On the italian website ZeusNews.it there's an article that explain, sketchily, a way to intercept VoIP calls without breaking the cryptographic system but by using bugs of variable bitrate audio compression.

Here's the link:
http://www.zeusnews.it/index.php3?ar=stampa&cod=7778
(English translation by Google)

Have a good reading.

VoipWise

Born a "new" software for VoIP calls and free SMS sending very but very similar to the other ones I spoke about in an old little article.
Reading from the official site it seems that there's the way to make free calls over landline phones in the enabled countries:

Australia, Austria, Belgium, Canada, Chile, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Japan, Latvia, Liechtenstein, Luxembourg, Netherlands, New Zealand, Norway, Portugal, Singapore, Slovak Republic, Slovenia, South Korea, Spain, Sweden, Switzerland, Turkey, United Kingdom, United States (mobile phone included).

The sending of free SMS is limited, as calls over landline phones, it's not understandable in what manner it is, but... better that nothing.
VoipWise is freely distributed and it is translated in many languages, after the short installation it is necessary to sign up with classic username and password, the registration process is quite immediate and easy to do, after that it will be possible begin to use VoipWise, between the features it's present the Phone2Phone function, simply inserting your own telephone number and the one you wish to call, it will be estabilished a direct call between the two phones, without computer aid.

Link:
VoipWise Main Official WebSite
Download VoipWise
VoipWise Fees
VoipWise SMS Fees
VoipWise FAQ

SoliCall 1.4.1

About a years ago and more I wrote this little article regarding a software that improve the audio quality of calls with almost all softwares that implement this function.
In these days it has been released the 1.4.1 version, i didn't find out any document or changelog that describe the changes and improvements produced, but if you're using SoliCall, an upgrade is advised, the download page show many link to download the software, use just the first or second one because the other ones still have an old version.
It is recommended to uninstall the previous version before installing this last one.