Facebook Messenger GuruFree
Since Facebook has made Messenger mandatory to all users who want to chat with friends, it's time to familiarize yourself with the app.
Downloads: 161+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.
Skype Mobile: Call, IM and more on Skype from your Android, Nokia or Sony Ericsson smartphones