Fring, a free communications app available for a number of different mobile platforms, has been updated to include 2-way video calling for the iPhone 4. Video calls can be done over 3G or Wi-Fi and since Fring also offers versions of its app for Android and Nokia devices, iPhone 4 users can conduct video calls with more people other than just those who can use Facetime on another iPhone 4.
Version 188.8.131.52 of Fring also adds multi-tasking features for iOS 4.
Fring has posted a video demonstrating how 2-way video calls work on the iPhone 4:
Beyond video calling, Fring also offers access to for Skype, Facebook, Twitter, ICQ, SIP, and GoogleTalk, MSN Live, Yahoo, and AIM instant messaging accounts to act as a user’s “mobile social hub.”