The following review was conducted in September 2017.
Linphone is an open source softphone originally developed for Linux by Belledonne Communications, although it now has clients for Windows, Mac OSX, Android, iOS, Windows Phone, and Blackberry. It is designed to work with the Linphone free SIP service but can also be used as a client for other SIP providers.
In this review, we take a look at how Linphone performs in terms of everyday use, including voice and video calling, conferencing, messaging, and more. For this review, we tested on Linphone 4.1.1 on Ubuntu 16.04.1 LTS release.