GoAway Pesky CallersFree
GoAway is an easy to use app that are are programmed to reject such incoming calls by cutting it off even before it rings! All rejected call
Downloads: 1,073+Report app for spam or abuse!
Nimbuzz Messenger Free
Nimbuzz Messenger is a free chat & calling app that helps you connect to your IM & Facebook friends.
WeChat is all-in-one communications app for text (SMS/MMS), voice & video calls, Moments, photos
Skype Mobile: Call, IM and more on Skype from your Android, Nokia or Sony Ericsson smartphones