Browse free open source Telephony software and projects 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
    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: 205 This Week
    Last Update:
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  • 2
    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: 16 This Week
    Last Update:
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  • 3
    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: 7 This Week
    Last Update:
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  • 4
    Kalkun
    Kalkun is an open source web-based SMS (Short Message Service) manager. It uses Gammu SMSD (part of gammu family) as SMS gateway engine to deliver and retrieve messages from your phone/modem. Documentation is on the wiki: https://github.com/kalkun-sms/Kalkun/wiki Development and source code can be found on github: https://github.com/kalkun-sms/Kalkun/
    Downloads: 9 This Week
    Last Update:
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    Fnokii is a simple file transfer Gtk+ GUI for gnokii. It supports upload, download and delete files in well-known mobile phone folders.
    Downloads: 0 This Week
    Last Update:
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  • 6
    KAlcatel

    KAlcatel

    Application for Alcatel 50x and 70x phones

    KAlcatel allows you to manage messages, calls, contacts, todos and the calendar in your Alcatel (tm) One Touch 50x and 70x mobile. This project is not maintained anymore, use Wammu instead (http://wammu.eu/)
    Downloads: 0 This Week
    Last Update:
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  • 7
    Archive SMS messages from your mobile phone to the neat text files named by the message sender. Supports own address book, exclusions, determine the sender by the message content, multipart messages, connects via COM port cable or infra-red beam.
    Downloads: 0 This Week
    Last Update:
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  • 8
    [EN] It sends SMS messages to czech mobile operators - T-Mobile, Vodafone and O2. [CZ] Aplikace slouží pro odesílání SMS zpráv do sití všech českých operátorů - T-Mobile, Vodafone a O2.
    Downloads: 0 This Week
    Last Update:
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