Best Open Source Telephony Software 2026

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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.

MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.

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Instant Remote Support Software. Unattended Remote Access Software.
Zoho Assist, your all-in-one remote access solution, helps you to access and manage remote devices.

Zoho Assist is cloud-based remote support and remote access software that helps you support customers from a distance through web-based, on-demand remote support sessions. Set up unattended remote access and manage remote PCs, laptops, mobile devices, and servers effortlessly. A few seconds is all you need to establish secure connections to offer your customers remote support solutions.

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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: 29 This Week

Last Update: 2025-04-26
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2

j2meinstaller

j2meinstaller is a console tool for installing j2me (*.jar) applications to cell phones, primary is designed for Nokia 6230i. For function is gammu needed.

Downloads: 0 This Week

Last Update: 2013-03-26
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3

jadcreator

jadcreator extract information from j2me *.jar file and store in to new *.jad file, whitch is necessary for installation j2me programs into any types of cell phones ie. Nokia 6230(i)

Downloads: 0 This Week

Last Update: 2016-07-29
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4

wxCommunicator

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 .

2 Reviews

Downloads: 0 This Week

Last Update: 2016-05-21
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Workspace management made easy, fast and affordable.
For companies searching for a desk booking software for safe and flexible working

The way we work has changed and Clearooms puts you in complete control of your hybrid workspace. Both meeting rooms and hot desk booking can be easily managed to ensure flexible and safe working, however big or small your organisation.

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