To Chat and send Text messages for free within the Nimbuzz community.
To Chat with your buddies from other communities like MSN™ and Google Talk™.
Nimbuzz Voice is a revolutionary concept that will change the world of mobile communication.
With Nimbuzz Voice we will eliminate the huge tariffs mobile operators charge you for international calls you make with your friends.
Nimbuzz Voice services will change the way you use your mobile today. Experience the fun of mobile group calls with your friends, sending a voice message to all your co-workers, or calling your buddy on his PC.
See a full review at MobileCrunch.
Unfortunately, there is no Mac client.