A free and open source instant messaging and VoIP chat app built for friends, groups, and communities.
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A free and open source instant messaging and VoIP chat app built for friends, groups, and communities.
Mumble is an open-source, low-latency, high quality voice chat software.
Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability
Linphone is a free VoIP and video softphone based on the SIP protocol. Mirror of git://git.linphone.org/linphone-desktop.git
Java wrapper for the popular chat & VOIP service: Discord https://discord.com
Modern and flexible SIP/VoIP cli tool
FS PBX: World’s Best Open-Source PBX
VoIP Stack for ESPHome and Home Assistant - local SIP phones, HA softphone/router, phonebook, softphone accounts and optional trunk calls
Let your AI agents call your phone over VoIP, and call them back. Your phone rings like a real call, even locked; a voice AI talks it through and returns the transcript. Self-hosted, open source, no phone numbers or Twilio.