Linphone is a free VoIP and video softphone based on the SIP protocol. Mirror of git://git.linphone.org/linphone-desktop.git

网关服务：Sip与Rtc互通，实现Web，Android，iOS，小程序，SIP座机，PSTN电话，手机互通。

A SIP call processing server that can be controlled via nodejs applications

Telegram <-> SIP voice gateway

Linphone.org mirror for flexisip (git://git.linphone.org/flexisip.git)

Minimalist Windows / OSx / Linux SIP Softphone with API Control

VoIP signaling and media test automation

A simple SIP server (proxy) for handling VoIP calls based on SIP using C++ on Windows & Linux platforms.

Simple, friendly and desktop integrated VoIP client.

High performance P2P-Mesh video conferencing

SIP to Mumble gateway/bridge using PJSUA stack.

Efficiently Searching In-Memory Sorted Arrays:Revenge of the Interpolation Search?

Platform-independent voice-over-IP peer-to-peer communication program

C++ SIP stack based on Chromium source code

Telegram <-> SIP voice gateway

YETI application for SEMS core

MicroSIP Source Code

Unified Communications System

SEMS core forked from https://github.com/sems-server/sems

Kurento SipRtpEndpoint modiule, provides the capabilities of connecting RTP media flows from a SIP network into Kurento. Of course it will require some SIP signalling plane not included in this module.