나온톡 - NaonTalk is a free mobile messenger developed by 나온소프트. It is designed for business users and offers seamless communication, quick task management, and fast information sharing through push notifications.

With 나온톡 - NaonTalk, users can engage in both one-on-one and group conversations, invite others to join conversations, and save conversation history (only available when accessing the app through a PC). The app also allows users to view past conversations, customize the interface with different skins, and integrate with mobile groupware.

Additionally, users can send and receive messages, as well as attach files, when composing notes or emails within the app.

Overall, 나온톡 - NaonTalk provides a convenient and efficient way for business users to communicate and collaborate on the go, without the limitations of time and location.