Keet.io just launch beta and its awesome. 

Keet and Greet Beta 
pear://keet/yrbionfcjybapcuf6fusx96idy9skttaf8zpoyh8iitx7pgz5gjcre8zktxhmcmbw1u77899txynynsofjhuiqrek8pdrhrf8mibgn6tzds64cuf