Open Source Windows Internet Phone Software

Internet Phone Software for Windows

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Browse free open source Internet Phone software and projects for Windows below. Use the toggles on the left to filter open source Internet Phone software by OS, license, language, programming language, and project status.

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  • 1
    Elastix

    Elastix

    Unified Communications Server

    Elastix is a software-based PBX powered by 3CX and based on Debian. An open-standards solution, Elastix is an easy to install and manage UC system compatible with popular IP phones, gateways and SIP trunks. Elastix is complete with unified communications features such as integrated WebRTC video conferencing, chat, presence and softphones and smartphone clients for Windows, Mac, iOS and Android.
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    Downloads: 217 This Week
    Last Update:
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  • 2
    Mumble

    Mumble

    Low-latency, high quality voice chat for gamers

    Mumble is an open source, low-latency, high quality voice chat software primarily intended for use while gaming. It includes game linking, so voice from other players comes from the direction of their characters, and has echo cancellation so the sound from your loudspeakers won't be audible to other players.
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    Downloads: 61 This Week
    Last Update:
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  • 3
    This project implements a simple STUN server and client on Windows, Linux, and Solaris. The STUN protocol (Simple Traversal of UDP through NATs) is described in the IETF RFC 3489, available at http://www.ietf.org/rfc/rfc3489.txt
    Downloads: 51 This Week
    Last Update:
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  • 4
    Open Phone Abstraction Library (OPAL) is a C++ multi-platform, multi-protocol library for Fax, Video & Voice over IP and other networks. Also included is the Portable Tool Library (PTLib) which is a C++ multi-platform abstraction library and collection o
    Downloads: 51 This Week
    Last Update:
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  • 5
    The Wizard's Apprentice is an application that allows you to ask questions from a script. It uses Windows dialog boxes in the so-called Wizard style: dialogs asking one question at a time, with a Back button, a Next button and a Cancel button.
    Downloads: 11 This Week
    Last Update:
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  • 6
    H.323 Beacon is a tool that can be used to measure/monitor/qualify/troubleshoot performance of H.323 Videoconference sessions both at the network and at the host by using a end-node(client) and core-node(server) architecture.
    Downloads: 9 This Week
    Last Update:
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  • 7
    Masedisugiantodotcom

    Masedisugiantodotcom

    The point is an convenience

    As a mobile ROM Review Downloader-based application, which features ROM options from various developers around the world that can be downloaded easily here via the latest mobile application. We make it easy for those of you who like different ROMs for various reasons such as improving the appearance, increasing performance even for any purpose such as ROM for gaming and so on. based on your suggestions and needs to provide convenience
    Downloads: 9 This Week
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  • 8
    A TAPI driver for SIP. SIPTAPI gives you a click2dial feature with any TAPI enabled application (e.g. MS Outlook) and SIP PBX/proxy. This is the "free" version of SIPTAPI. There is also an enhanced commercial version available at www.ipcom.at.
    Downloads: 8 This Week
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  • 9
    Speak Freely is a Cross Platform Internet telephony (Voice Chat) application which provides high quality voice grade audio with GSM and CELP compression and encryption with DES, Blowfish, and IDEA ciphers. Refering to recent news: The maintainers will never add any unwanted extra software in the zip download file but we can only speak for our selves.
    Downloads: 6 This Week
    Last Update:
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  • 10
    A lightweight cross platform IP telephony client using the IAX protocol, designed for use with the asterisk open source PBX.
    Downloads: 5 This Week
    Last Update:
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  • 11
    Kiax is a softphone (soft phone, VoIP client) with a simple and comfortable user interface for making VoIP calls to Asterisk PBX. It depends on the iaxclient library to use Asterisk's IAX2 protocol for easy call configuration and audio setup.
    Downloads: 2 This Week
    Last Update:
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  • 12
    GNU Gatekeeper (GnuGk)

    GNU Gatekeeper (GnuGk)

    H.323 Gatekeeper for VoIP and videconferencing

    The project has moved! Please find current versions at https://www.gnugk.org/ The GNU Gatekeeper (GnuGk) is a full featured H.323 gatekeeper under GPL license. It supports VoIP and videoconferencing and includes Radius and database support and many call routing functions. The project has moved! Please find current versions at https://www.gnugk.org/
    Downloads: 2 This Week
    Last Update:
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  • 13
    VoIPER is a VoIP security testing toolkit incorporating several VoIP fuzzers and auxilliary tools to assist the auditor. It can currently generate over 200,000 SIP tests and H.323/IAX modules are in development. It's also a damn cool project name ;)
    Downloads: 2 This Week
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  • 14
    Java SIP softphone
    Peers is a very simple softphone. It's a SIP User-Agent, written in java, it works on windows, linux and mac. It can be used with SIP servers like opensips or asterisk IPBX. It supports G711 codec (PCMU and PCMA) and telephone-events (DTMF).
    Downloads: 1 This Week
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  • 15
    The Skype SourceForge project is the public repository for Skype-related open-source projects including SkypeWeb and Skype API implementations. Do you have a SkypeWeb or SkypeAPI project you'd like to share? Get in touch!
    Downloads: 3 This Week
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  • 16
    TIPcon1 is a standards-compliant soft phone using text, voice and video with accessibility features.
    Downloads: 4 This Week
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  • 17
    Activa brings the Asterisk IP PBX to the call center. Built on top of Asterisk, Activa components enable successful call center implementations adding value in areas such as computer telephony, screenpop&click2dial, agent control, automatic dialing...
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    Downloads: 1 This Week
    Last Update:
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  • 18
    MobiDict is a mobile dictionary to be run on mobile devices that support J2ME (MIDP/CLDC). English-German and German-English dictionary are provided. The goal is to provide flexible framework for easy creation of other mobile dictionaries.
    Downloads: 2 This Week
    Last Update:
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  • 19
    This project has been superseded by OpalVoip (https://sourceforge.net/projects/opalvoip/) and H323Plus (https://sourceforge.net/projects/h323plus/) The OpenH323 project provides full featured, interoperable, Open Source implementation of the ITU H.323 teleconferencing protocol that can be used by personal developers and commercial users without charge.
    Downloads: 2 This Week
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  • 20
    A patent-free audio codec designed especially for voice (unlike Vorbis which targets general audio) signals and providing good narrowband and wideband quality. This project is complementary to the Ogg Vorbis codec.
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    Downloads: 2 This Week
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  • 21
    Automatic generation of configuration files for VOIP equipments ( provisioning ). Reboot; Address Book generation. Database (ODBC) : MS Access / MSSql / MySql /..... Tested : Grandstream GXP2000, Linksys PAP2, UtstarCom F1000G. by extension : Sipura
    Downloads: 2 This Week
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  • 22
    This is a Java wrapper for Ffmpeg. The JMF (Java Media Framework) plugins system lets one use JMStudio or other application to play H.263/rfc2190 streams. Support for H.263+ and MPEG-4 is currently under test, please contact us for further information.
    Downloads: 3 This Week
    Last Update:
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  • 23
    The Asterisk .NET library consists of a set of C# classes that allow you to easily build applications that interact with an Asterisk PBX Server (1.0/1.2/1.4 version). Both FastAGI and Manager API supported. .NET/Mono compatible.
    Downloads: 1 This Week
    Last Update:
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  • 24
    wxCommunicator is a cross platform SIP softphone written in C++ utilizing customized sipXtapi user agent library and wxWidgets 2.8.9 GUI library. For a list of supported features see http://wxcommunicator.sourceforge.net/features.html .
    Downloads: 1 This Week
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  • 25
    Scapegoat Software's Erlang B calculator is just that, an Erlang B calculator. It was written in Lazarus under Windows as a small project to have a simple standalone calculator for different telecom projects. We are releasing it under the GNU GPL 2.0.
    Downloads: 2 This Week
    Last Update:
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