Telephony Software for Windows

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

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  • 1
    IssabelPBX

    IssabelPBX

    Issabel PBX - Unified Communications

    Open Source and Unified Communications partners created a new platform based on an Elastix® fork (currently purchased by 3CX) to provide the community with continuity, peace of mind and support needed to continue with their PBX and operation developments. Contribute to the funding of Issabel on https://www.patreon.com/issabel
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    Downloads: 2,822 This Week
    Last Update:
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  • 2
    NoiseGator (Noise Gate)

    NoiseGator (Noise Gate)

    A simple noise gate app intended for use with VOIPs like Skype.

    Ever wanted to cut out background noise when talking with others on Skype? Now it's possible! NoiseGator is a light-weight noise gate application that routes audio through an audio input to an audio output. In real-time the audio level is analysed and if the average level is higher than the threshold the audio bypasses as normal. However, if the average level goes below the threshold, the gate closes and the audio is cut. When used with a virtual audio cable it can act as a noise gate for a either a sound input(microphone) or sound output(speakers). Can also be used to gate noise from your own mic or play your microphone through your speakers. REQUIREMENTS: - Java 7 or higher for Windows. - Java 6 or higher for Mac. Java 7 recommended. - A virtual audio cable is required for use with VOIPs: For Windows users I recommend the VB-Cable driver (http://vb-audio.pagesperso-orange.fr/Cable/index.htm). Mac users can use SoundFlower.
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    Downloads: 716 This Week
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  • 3
    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: 153 This Week
    Last Update:
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  • 4
    NbuExplorer
    Nokia NBU, NBF, NFB, NFC and ARC backup file parser, extractor and viewer. It can help you to check content of backup or extract files from it. Requires MS .Net Framework 2
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    Downloads: 155 This Week
    Last Update:
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  • 5
    Asterisk GUI client, VICIdial

    Asterisk GUI client, VICIdial

    VICIdial Contact Center Suite

    This software suite is designed to extend the functionality of the Asterisk PBX through platform-independant web-client applications. Includes the VICIdial inbound/outbound contact center application. The suite is scalable across multiple Asterisk servers.
    Downloads: 65 This Week
    Last Update:
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  • 6
    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    BlackBelt Privacy Tor/i2p+WASTE+VidVoIP

    Browse on Tor/i2p, Anon p2p Chat / FileTx, Conf / Video VoIP

    Open Source - GPLv3 inc images. *** PLEASE NOTE: There are now 2 seperate versions here. *** One is Pre Firefox 57. The other is Post Firefox 57. *** For those providing mirrors, please enable your users to realize this. Vidalia Based, Tor as a Service Solution. MicroSip: enables FREE PC to PC video calling with no account sign-up and no middleman server. WASTE: enables FREE Conference VoIP, chat, file transfer and support. *** AI Powered *** Tor/i2p: enables safer browsing. Tor/i2p Profile: Browse over Tor/i2p on Firefox (Vanilla, ESR), Waterfox (Classic, New), Palemoon , LibreWolf and legacy CyberFox. As with all versions of Tor - do not rely on this for strong anonymity. A usability enhanced Privacy Pack. Use alongside Tor Browser Bundle. An installer, for : Vista 32/64, Win7 32/64, Win8 32/64, Win10 32/64, Win11, Linux (Wine)
    Downloads: 67 This Week
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  • 7
    Gammu

    Gammu

    Cellular manager for mobile phones/modems

    Gammu is a cellular manager for mobile phones/modems. It contains libraries and functions for ringtones,logos,phonebook,SMS,etc. (used by external software), a command line version (with backup/restore) and SMS gateway (with MySQL and PostgreSQL supp
    Downloads: 36 This Week
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  • 8
    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: 37 This Week
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  • 9
    Network Caller ID
    The NCID (Network Caller ID) project is Caller ID (CID) distributed over a network. The project contains the NCID package and 4 optional client packages. Each package is described at the NCID web site. A non-inclusive list of 3rd party addons is also available at the web site Available Packages: NCID - contains the server, gateways, and a client with output modules LCDncid - a client that uses LCDproc to display Caller ID on a LCD display NCIDandroid - a client and gateway for Android devices NCIDdisplay - a homebrew client that displays on large LED modules NCIDpop - a popup client for Windows, Mac, and Linux
    Downloads: 34 This Week
    Last Update:
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  • 10
    JDA

    JDA

    Java wrapper for the popular chat & VOIP service

    JDA strives to provide a clean and full wrapping of the Discord REST api and its Websocket-Events for Java. This library is a helpful tool that provides the functionality to create a discord bot in java. Discord is currently prohibiting the creation and usage of automated client accounts (AccountType.CLIENT). We have officially dropped support for client login as of version 4.2.0! Note that JDA is not a good tool to build a custom discord client as it loads all servers/guilds on startup, unlike a client which does this via lazy loading instead. If you need a bot, use a bot account from the Application Dashboard. Creating the JDA Object is done via the JDABuilder class. After setting the token and other options via setters, the JDA Object is then created by calling the build() method. When build() returns, JDA might not have finished starting up. However, you can use await ready() on the JDA object to ensure that the entire cache is loaded before proceeding.
    Downloads: 6 This Week
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  • 11
    PBXinaFlash 3/ IncrediblePBX
    Longing for the good old days of Asterisk@Home? Welcome back to the steroid-enhanced version. PBX in a Flash 3.0 & Incredible PBX 2020/2021/2022/2027 are the latest Lean, Mean Asterisk Machines, high-performance, turnkey Asterisk PBXs that are easy to upgrade. Features include Rocky8, CentOS/SL 7.x, Ubuntu 22.04 & 20.04, Debian 10 and Raspbian 10 support with Asterisk 20/18/16 and FreePBX 16/15 GPL modules. Add-ons include one-click installs of Incredible Fax and many other Asterisk utilities. Visit Nerd Vittles for the latest tutorials.
    Downloads: 33 This Week
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  • 12
    libphonenumber for PHP

    libphonenumber for PHP

    PHP version of Google's phone number handling library

    A PHP library for parsing, formatting, storing and validating international phone numbers. This library is based on Google's libphonenumber. This library will try to follow the same version numbers as Google. There could be additional releases where needed to fix critical issues that can not wait until the next release from Google. This does mean that this project may not follow Semantic Versioning, but instead Google's version policy. As a result, jumps in major versions may not actually contain any backward-incompatible changes. Please read the release notes for such releases. This library uses phone number metadata from Google's libphonenumber. If this library is working as intended, it should provide the same result as the Java version of Google's project. If you believe that a phone number is returning an incorrect result, first test it with libphonenumber via their Online Demo.
    Downloads: 5 This Week
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  • 13
    SIM Card Manager

    SIM Card Manager

    Windows tool to read SIM card information and content

    SIMCardManager is Windows tool that can read a SIM card information (ICCID, IMSI, Pin states) and SIM card content : phone book (ADN), Fixed dialing (FDN) and SMS messages. It also enables you to authenticate with PIN when activated and export SIM card content to text files. You need to have a PC/SC compatible smart card reader or dongle with SIM slot. You can find other useful tools on my website http://www.idrix.fr
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    Downloads: 68 This Week
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  • 14
    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: 27 This Week
    Last Update:
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  • 15
    SIM Explorer

    SIM Explorer

    Sim Card explorer and decoder

    This software uses your smart card reader/terminal to navigate through the SIM Card directory tree. The contents of the files are decoded and showed to the user. Other features, such as CHV management and SIM backup, are also available.
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    Downloads: 51 This Week
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  • 16
    International Telephone Input

    International Telephone Input

    Plugin for entering and validating international telephone numbers

    A JavaScript plugin for entering and validating international telephone numbers. It adds a flag dropdown to any input, detects the user's country, displays a relevant placeholder and provides formatting/validation methods. Lots of initialization options for customization, as well as public methods for interaction. The user types their national number and the plugin gives you the full standardized international number. Navigate the country dropdown by typing a country's name, or using up/down keys. Automatically set the input placeholder to an example number for the selected country. Automatically select the user's current country using an IP lookup. Access the country data to create a separate country dropdown for an address form, and then listen for change events to keep the two dropdowns in sync. Use Twilio's API to build phone verification, SMS 2FA, appointment reminders, marketing notifications and so much more.
    Downloads: 3 This Week
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  • 17
    What is t38modem? From your application view point it's a fax/voice modem pool. From IP network view point it's a H.323/SIP endpoint with T.38 fax support. From your view point it's a gateway between an application and IP network. Works with HylaFAX.
    Downloads: 16 This Week
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  • 18
    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: 18 This Week
    Last Update:
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  • 19

    oreka

    Enterprise telephony recording and retrieval system

    Enterprise telephony recording and retrieval system with web based user interface. The project currently supports recording voice from VoIP SIP, Cisco Skinny (aka SCCP), raw RTP and audio sound device and runs on multiple operating systems and database systems. It can record audio from most PBX and telephony systems such as BroadWorks, Metaswitch, Asterisk, FreeSwitch, OpenSIPS, Avaya, Nortel, Mitel, Siemens, Cisco Call Manager, Cosmocom, NEC, etc... It is amongst others being used in Call Centers and Contact Centers for Quality monitoring (QM) purposes.
    Downloads: 12 This Week
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  • 20
    008

    008

    Open-source event-driven AI powered Softphone

    008 is an open-source event-driven AI powered WebRTC Softphone compatible with macOS, Windows, and Linux. It is also accessible on the web (though official support for browser-related issues is not provided). The name '008' or 'agent 008' reflects our ambition: beyond crafting the premier Open Source Softphone, we aim to introduce a programmable, event-driven AI agent. This agent utilizes embedded artificial intelligence models operating directly on the softphone, ensuring efficiency and reduced operational costs. This project is a WebRTC softphone, and communication is achieved via SIP over a socket. Leading PBX systems like Asterisk or Freeswitch support socket connections. If your provider does not offer this feature, consider using a SIP proxy such as Kamailio, Opensip or Routr. The softphone is internally configured using a JSON definition. The configuration file can be loaded from either a server or a local file. 008 reads the file only once.
    Downloads: 2 This Week
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  • 21
    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: 9 This Week
    Last Update:
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  • 22
    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: 11 This Week
    Last Update:
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  • 23
    Please visit http://dev.frontlinesms.com
    Downloads: 11 This Week
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  • 24
    BlackBelt WASTE - ipv4/Tor/i2p +AI+Voice

    BlackBelt WASTE - ipv4/Tor/i2p +AI+Voice

    Modern, AI-Smart, WASTE p2p for ipv4, Tor and i2p + Voice Conference.

    Open Source - GPLv3 inc images. A WASTE client. Download and create your own WASTE networks. Move 1000's of GB's at 100MB+ per sec. (800 Mbits per sec) FULL pause and resume capable. Voice Conference, Chat, Transfer files and Participate in Forums in a secure environment. For Windows XP 32/64, Vista 32/64, Win7 32/64, Win8 32/64, Win 10, Win 11, Linux (WINE). *** User Based Access Control - for voice, chats, file transfers and uploads. (useful in NULLNETS) *** Distributed Autonomic-Performance-Tuning - A Goal-Seeking Swarming-Semiotic AI *** AI Connect - AI Managed Connections. *** Self-Organising Anti-Spoofing Technology *** Geared Multi-threading, providing the smoothest performance possible *** Advanced Threat Detect and Manage Technology *** Voice Conferencing Over WASTE *** RNN - Recurring Neural Net - AI Noise Reduction *** Differential Files Transfer - Seriously fast data backups
    Downloads: 21 This Week
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  • 25
    An open implementation of the SS7 core protocols, MTP, SCCP, ISUP, and TCAP.
    Downloads: 21 This Week
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