Fring up your iPhone with this pre-release, development version and discover the freedom of taking all of your fring®, Skype®, MSN®, Google Talk™, ICQ, Twitter, Yahoo!™ & AIM® buddies mobile on your iPhone, allowing you to make free calls over WiFi & enjoy rich, IM-style chat with them using internet connection.The pre-release of Fring works via EDGE connection too, so you can now enjoy free chat on iPhone when travelling.
The installation guide can be found here.
Bad news for mobile operators? :o)
