Pure Go implementation of the WebRTC API

即时通讯(IM)系统

Mumble is an open-source, low-latency, high quality voice chat software.

🚀 The open-source alternative to Twilio.

Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)

qTox is a chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol.

FreeSWITCH 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.

WebRTC plugin for Flutter Mobile/Desktop/Web

🚀starRTC，即时通讯(IM)系统，免费IM系统（含单聊，群聊，聊天室，文件传输），免费一对一视频聊天，VOIP，语音对讲（回音消除），直播连麦，视频直播，RTSP拉流，RTMP推流，webRTC服务端，在线教育，白板，小班课，在线会议，视频会议，视频监控，局域网直连（无需服务器），兼容webRTC, 支持webRTC加速，P2P高清传输，安卓、iOS、web互通，支持门禁对讲，可视对讲，电视盒子，树莓派，海思，全志，任天堂switch，云游戏，OTT设备，物联网平台，C语言自研方案，支持二次开发成类微信，类映客等APP，✨万水千山总是情，来个star行不行✨，更多示例请访问：

Async PHP client API for the telegram MTProto protocol

The official Asterisk Project repository.

免费IM系统，IM即时通信消息系统(含一对一文字聊天，群聊，聊天室)，免费一对一voip实时通话，录屏，webrtc服务端，免费直播连麦，互动直播，视频直播，RTSP拉流，RTMP推流，语音对讲，免费在线会议，视频会议等服务端程序，支持物联网平台，✨万水千山总是情，来个star行不行✨

🏆 WebRTC - SFU - Simple, Secure, Scalable Real-Time Video Conferences Up to 8k, compatible with all browsers and platforms.

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -

即时通讯，聊天，野火IM Android客户端，支持Android 4.x —— 最新

PJSIP project

A simple, intuitive, and powerful JavaScript signaling library

Baresip is a modular SIP User-Agent with audio and video support

HOMER - 100% Open-Source SIP, VoIP, RTC Packet Capture & Monitoring

A WebRTC, SIP and VoIP library for C# and .NET. Designed for real-time communications apps.

⚡ The future of programmable SIP servers.

This TeamSpeak 6 Server Beta repository contains the latest beta version of the TeamSpeak 6 Server software, offering early access to improvements and bug fixes. This beta release is intended for testing and feedback before the stable version launch.

Linphone.org mirror for linphone-android (https://gitlab.linphone.org/BC/public/linphone-android)

即时通讯，聊天，野火IM iOS客户端

SIP softphone for Mac

SIPVicious OSS is a VoIP security testing toolset. It helps security teams, QA and developers test SIP-based VoIP systems and applications. This toolset is useful in simulating VoIP hacking attacks against PBX systems especially through identification, scanning, extension enumeration and password cracking.

iOS CallKit framework and Android ConnectionService for React Native

Group calls powered by Matrix

A Go implementation of STUN

Element Server Suite Community Edition