GitHub stars · StarDay

1processone / ejabberdRobust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)ErlangLicense not declared6,750

2signalwire / freeswitchFreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.CLicense not declared5,283

3flutter-webrtc / flutter-webrtcWebRTC plugin for Flutter Mobile/Desktop/WebC++MIT · Permissive4,504

4jitsi / jitsiJitsi is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, IRC and many other useful features.JavaApache-2.0 · Permissive4,354

5asterisk / asteriskThe official Asterisk Project repository.CLicense not declared3,671

6miroslavpejic85 / mirotalksfu🏆 Self-hosted, open-source WebRTC video conferencing platform for real-time communication and collaboration. A modern alternative to Zoom, Google Meet, Jitsi Meet, and Microsoft Teams, powered by scalable SFU architecture with Mediasoup.JavaScriptAGPL-3.0 · Share derivative source3,148

7kamailio / kamailioKamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalabilityCLicense not declared2,991

8BelledonneCommunications / flexisipLinphone.org mirror for flexisip (git://git.linphone.org/flexisip.git)C++AGPL-3.0 · Share derivative source195

9AreevAI / flowcatSelf-hosted native-Rust runtime for real-time voice agents. Own the stack: one binary in your own VPC or air-gapped, no hosted control plane. pipecat-compatible pipeline, in-process SIP/RTP, single-process call density. Apache-2.0.RustApache-2.0 · Permissive128