Good way to chat with colleagues using your mobile, when you're travelling abroad (as long as they have KakaoTalk installed)
License: Full commercial application
Kakao Talk is a chat app that seems suitable for the most frequent of social networkers, communicators or teenagers. However its ability to unite groups of people in different locations has obvious benefits for business users or families.
The application, which is free, lets users hold one to one or group chats with people from all over the world.
Rather than use SMS to send messages, the app pushes messages to users. New messages trigger an alert and the conversation can be started, or picked up where previously left off.