Linphone

Linphone

Web site: linphone.org
Category: Network
Subcategory: Instant Messengers, Voip Client
Platform: Android, iOS, Linux, OS X, Windows
License: GPL, Proprietary
Interface: GUI
Programing language: C, Java, Python
First release: 2001
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Linphone (Linux phone) – an open source SIP phone for voice/video calls and instant messaging, and is available for mobile and desktop environments (iOS, Android, GNU/Linux, macOS, Windows Desktop, Windows 10 UWP). Linphone features a separation between the user interfaces and the core engine, allowing the creation of various kinds of user interface on top of the same functionalities.

Main features:
– HD audio and video calls
– Multiple call management (pause and resume)
– Call transfer
– Audio conferencing (merge calls into a conference call)
– Call recording and replay (audio only)
– Instant Messaging with message delivery status (IMDN)
– Picture and file sharing
– Chat access during calls
– Contact list
– “Invite your friends” feature
– Call history
– Display of advanced call statistics
– Echo cancellation
– Call quality indicator
– Secure user authentication: md5 / SHA256 digest, TLS client certificates
– SRTP, zRTP and SRTP-DTLS voice and video encryption
– Supported languages: English, French
– Account creation assistant
– Remote provisioning

The user interface frontends are:
– A Qt/QML interface for Windows desktop, macOS and GNU/Linux
– A console interface (linphone-daemon)
– An iPhone application built in objective C
– An Android application running in Java

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