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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AChat is open source application for your LAN. It allows you to chat in public and your own channels. You can also share files, which other users can easily find via Search feature, but you can also send specific files to other users, show them images you just captured and send messages even to users that are currently offline.
