Yeigo
Ever wished that all the advantages of Voip and your desktop messenger be portable enough to get packed into a mobile? Well, then this is good news for you for Yeigo is a software for mobile phone that brings them all together. The company offers the software and service for free but only if the other party is also using the same software. The Holler function of the software lets you buzz your friends who are not logged into the system getting them to connect with you. It offers all the services you get on your PC(messenger) and combines them with the cheapness of using Voip to make calls and the best part about it, it�s in your pocket anytime anywhere.