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for smartphones and tablets

• HD audio and video calls
• Audio conferences and advanced calling features
• Instant messaging and group chat
• Picture and file sharing
• Secure calls
• End-to-end encryption for messaging

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for desktop platforms

• Intuitive and modern UI
• Audio conference calls and advanced calling features
• HD video calls in full screen mode
• Instant Messaging and File sharing
• Secure communications
• Presence

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• Multi-participant groups
• End-to-end encryption for messaging
• Multi-device support
• Intuitive message delivery status
• Easy management of participants and admins
• Based on SIP, evolving towards RCS specifications

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Flexisip server suite

• Modular design: proxy, presence and conference functions
• Integrated with push notifications systems
• High availability and cluster mode
• NAT-aware, built-in media relay, STUN server
• Easy to install, configure and maintain
• Your own SIP service “out of the box”

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IOS

macOS

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Products

What is behind Linphone, and what software do you actually need? Discover the whole software family that we develop and distribute.

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Solutions

Wondering how you can use Linphone, Liblinphone SDK or Flexisip server in your own, specific VoIP project? Read common use cases and consult our white papers.

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Licensing and services

Undecided between open source or proprietary licenses, or need help with your project? Learn about our licensing model and our available range of professional services.

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Company

Who are we and what do we do? Learn the story of the company behind the Linphone project, see our team’s skills and read some of our references.

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Technical corner

Access detailed technical information about our software applications, including our software architecture, supported RFCs, API documentation, how to get the source code and more.

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White papers

Learn how to use Linphone and Flexisip to build your intercom system, your secure VoIP solution or your social networking app.

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Developer wiki

Much more technical information is available, and most of the developer guidelines are held in Linphone’s technical public wiki.

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Features

Linphone is an open source SIP phone that makes it possible to communicate freely with people over the internet. Find out what it can do.

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FAQ

If you are in any doubt about how to start using Linphone and make the most of all the available features, you can look for answers in our Frequently Asked Questions.

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Free SIP service

Create and manage your Linphone account (which means your own SIP address) to start using Linphone and connect with your friends.

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Welcome to Linphone

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March

2019

Towards Win32 and UWP convergence

Thanks to recent compatibility between Win32 and UWP technologies introduced by Microsoft, UWP apps can now link to a Win32 library. We have decided to unify our two projects for building Liblinphone on Windows.

December

2018

H.265 integration in Linphone for iOS and Android

After having developed our innovative algorithm for adaptive bitrate control last year, we are pleased to announce that H.265 is now supported out-of-the-box in Linphone for iOS and Android.

October

2018

Group chat now available in Linphone!

For many years, Linphone has been one of the most active communication software in the open source world. Originally focused on voice, additional functionalities were rapidly added, like video, instant messaging (IM) and presence.

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