qTox is a chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol.
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Wire – encrypted instant messaging client
Wire is a cross-platform, encrypted instant messaging client. It allows users to exchange text, voice, photo, video and music messages.
Read moreJami – free and universal communication platform
GNU Ring (formerly SFLphone) is an open source SIP-compatible softphone and SIP-based instant messenger for Linux.
Read moreJitsi – innovative open source voice and video conferencing
Jitsi is a set of open-source projects that allows you to easily build and deploy secure videoconferencing solutions.
Read morePidgin – multi-protocol instant messaging client
Pidgin is an open source graphical Instant Messenger (IM) program that lets you sign on to many chat services.
Read moreBest Free and Open Source Alternatives to Apple Messages
Messages is a proprietary freeware instant messaging software application. What are the best free and open source alternatives?
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