Also called "Chat Programs". These applications are installed on a PC by a user, and allow immediate "chats" between other users of the program. Some of these programs also allow audio or video conferencing as well as the ability to execute file transfers.
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NetTalk is a Videochat program, that enables you to see, hear and chat one on one via LAN or Internet. You can use NetTalk to send compact quality video/audio stream to another NetTalk user using your Webcam and microphone.
