No cost per message, IM doesn’t use SMS to send messages.
Skype and MSN group chat: invite your friends and enjoy group conversations.
Make free video calls on supported devices from your mobile to oo Voo friends on mobile phones or on computers.
Up to 5 friends on the video call with you at once – group video calling is also free.
Whats App Messenger provides i Phone users with the familiar look-and-feel of desktop instant messaging programs, right on their i Phone.
Key features: no monthly fees, no international charges, no PINs or usernames, no login / logout, push notifications.
More releases on mobiles and tablets with front-facing camera planned soon.
Kakao Talk (Android, i Phone) Kakao Talk is a phone number based messenger service that allows i Phone and Android users anywhere in the world to chat one-to-one or in a group for free.
Make calls to any other person who has Tango installed on their phone anywhere in the world for free.
Feature to add friends with their IDs as well as with their phone numbers fring (Android, i Phone) fring is a multi-award winning mobile application that lets you make free voice calls, free video calls (one way) and live IM chats directly from your i Phone and i Pod touch. Communicate with your friends from fring and other favorite social services including Skype, MSN®Messenger, Google Talk, Twitter, Yahoo!
, AIM, ICQ, all through one central profile, using your i Phone and i Pod touch’s internet capability.
The app currently supports the following: MSN- Skype- AOL/AIM/ICQ- Yahoo- Google Talk – My Space – Facebook Features: concurrent sessions on different devices, save chat history, voice IM, send multimedia attachments (audio, visual, files) Whats App Messenger (i Phone) Want to message your friends and contacts for free?
Whats App is a direct i Phone-to-i Phone chat application with instant push notifications.