A New Tool for Mobile Video Group Chats This four-way video-calling service can help your team stay in touch on the road.

Mobile video conferencing is becoming more like the music industry every day: Everything is getting free, fast.

Israel-based fring, which launched its four-way video calling service in April, enables decent-quality, multiperson video chats over iPhones and Androids.

For in-fring network calls--assuming users have downloaded and enabled the app--video calling is free. Out-of-network calls ring in at pennies per minute (a call to the U.S. from a mobile phone in Greece, for example, costs 7.2 cents per user, per minute). Not bad.