Introduction

Linphone is an open source softphone for voice and video over IP calling and instant messaging, which makes it possible to communicate freely with people over the internet. It is fully SIP-based, for all calling, presence and IM features.

Linphone is available for smartphones, tablets and desktop platforms :

• mobile:  iOS, Android
• desktop:  GNU/Linux, macOS, Windows Desktop, Windows 10
• embedded targets : Yocto, Xamarin

General description is available from linphone web site

License

Linphone is dual licensed, and is available either :

• under a GNU GPLv3 license, for free (open source). Please make sure that you understand and agree with the terms of this license before using it.
• under a proprietary license, for a fee, to be used in closed source applications. Contact Belledonne Communications for any question about costs and services.

Software architecture