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SIPDump is a packet capture tool for writing SIP calls to pcap files. It listens on a specified interface for any new SIP calls and writes them to disk.



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Linphone is an internet phone or Voice Over IP phone (VoIP), it helps to communicate freely with people over the internet, with voice, video, and text instant messaging. Linphone is available for Linux, Windows, MacOSX, and for mobile phones: Android, iPhone, Blackberry. It is using SIP protocol and it is compatible with any voip operator using SIP for its network.

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Moloch is an open source, large scale, full packet capturing, indexing, and database system. Moloch augments your current security infrastructure to store and index network traffic in standard PCAP format, providing fast, indexed access. An intuitive and simple web interface is provided for PCAP browsing, searching, and exporting.

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Network Intrusion Detection and Full Packet Capture System

Kamailio - The Open Source SIP Server

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My SIP Switch

A SIP signalling consolidation tool that allows multi-user management of diverse SIP providers and allows central management of any SIP based VoIP service. Included in this project are a SIP Stack, SIP Registrar, SIP Registration UAC, SIP Stateful Proxy, STUN Server and more. ...

sngrep - Ncurses SIP Messages flow viewer

sngrep is a tool for displaying SIP calls message flows from terminal. It supports live capture to display realtime SIP packets and can also be used as PCAP viewer.

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Blink is a GUI for Mac, Windows and Linux built on top of SIP SIMPLE client SDK. It uses SIP (Session Initiated Protocol) for VOIP and Instant Messaging. It supports Multi-party conferencing, Missed Calls, Dialing out SIP addresses and telephone numbers. Currently File Transfer and Desktop sharing is supported only in Mac.

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QuteCom is a SIP compliant VOIP client. It allows users to speak to other users of SIP compliant VoIP software. It helps to make calls to landlines, cellphones and allows to send SMS and make video calls.

Open Unified Recording

Open Unified Recording (OUR) is a full featured Linux based Open Source VoIP/SIP Call Recording engine, indexing and retrieval system. The system resides on the network and passively captures SIP sessions. Project is sponsored by


At the heart of this project is an open source C# SIP stack. In addition there are related projects including a variety of SIP Servers such as a Proxy, Registrar and more. The SIP stack was launched in 2006 and is used in a number of live services particularly

SIPatH - VoIP Router for OpenWRT

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This is a library for generating SIP Common Log File (CLF) formatted files, based on the PCAP-format. Please see the README.txt in the downloads for using it in general. See the wiki for more details.


A wrapper SDK for various protocols for VoIP communication including IAX and SIP.