Best Open Source Telephony Software 2025

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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

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/

7 Reviews

Downloads: 9 This Week

Last Update: 2025-04-26
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2

SMS Viewer

A fully perl written sofware for windows (also stand alone binary code included, so it does not require perl installation to use it) to receive short messages (SMS) sent by mobilephone.

1 Review

Downloads: 0 This Week

Last Update: 2015-08-03
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3

SafeSMS

SafeSMS in an application for SMS end-to-end encryption. It can send and receive encrypted messages. Encryption uses a secret key derived from a password and shared by sender and recipient. Sent and received messages can only be read with the password.

Downloads: 0 This Week

Last Update: 2016-07-26
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4

SaunaSMS J2ME

SaunaSMS J2ME is application for customers of finnish operator Saunalahti to send FREE or pre-purchased SMS Messages. Idea of SaunaSMS J2ME is based on similar application developed for other platforms (ie. iPhone). This is my first J2ME app :)

Downloads: 0 This Week

Last Update: 2013-05-02
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5

Telephonik

Telephonik is a multi-protocol Internet telephony application (i.e. VoIP softphone) for the K Desktop Environment.

Downloads: 0 This Week

Last Update: 2013-04-24
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