Original author(s)Belledonne Communications
Stable release(s)
Android4.5.6[1] Edit this on Wikidata / 8 November 2021
iOS4.5.1[2] Edit this on Wikidata / 8 October 2021
Linux4.3.2[3] Edit this on Wikidata / 9 November 2021
macOS4.3.2[3] Edit this on Wikidata / 9 November 2021
Windows4.3.2[3] Edit this on Wikidata / 9 November 2021
Preview release(s)
Android4.7.0-alpha[4] Edit this on Wikidata / 4 November 2021
iOS4.4.0-beta[5] Edit this on Wikidata / 4 January 2021
Linux4.4.0-alpha[6] Edit this on Wikidata / 20 October 2021
macOS4.4.0-alpha[6] Edit this on Wikidata / 20 October 2021
Windows4.4.0-alpha[6] Edit this on Wikidata / 20 October 2021
Written inC, Java, C#, Python[7]
Operating systemLinux, FreeBSD,[8] Windows, Mac OS, iPhone, Android, Windows Phone
Size8–17 MB
Available inMultilingual, including English, Arabic, Dutch, French, German, Japanese, Russian and Traditional Chinese
TypeVoice over IP, instant messaging, videoconferencing
LicenseGPL-3.0-or-later[9] or proprietary[10]

Linphone (contraction of Linux phone) is a free voice over IP softphone, SIP client and service. It may be used for audio and video direct calls and calls through any VoIP softswitch or IP-PBX. Linphone also provides the possibility to exchange instant messages. It has a simple multilanguage interface based on Qt for GUI and can also be run as a console-mode application on Linux.

The softphone is currently developed by Belledonne Communications in France. Linphone was initially developed for Linux[11][12] but now supports many additional platforms including Microsoft Windows, macOS, and mobile phones running Windows Phone,[13] iOS[14] or Android.[15] It supports ZRTP for end-to-end encrypted voice and video communication.

Linphone is licensed under the GNU GPL-3.0-or-later and supports IPv6. Linphone can also be used behind network address translator (NAT), meaning it can run behind home routers. It is compatible with telephony by using an Internet telephony service provider (ITSP).


Linphone hosts a free SIP service on its website.[16]

The Linphone client provides access to following functionalities:[17]

Open standards support


Audio codecs

Audio codec support: Speex (narrow band and wideband), G.711 (μ-law, A-law), GSM, Opus, and iLBC (through an optional plugin)

Video codecs

Video codec support: MPEG-4, Theora, VP8 and H.264 (with a plugin based on x264), with resolutions from QCIF (176×144) to SVGA (800×600) provided that network bandwidth and CPU power are sufficient.[18]


See also


  1. ^ "Linphone 4.5.6 on GitLab".
  2. ^ "Linphone 4.5.1 on GitLab".
  3. ^ a b c "Linphone 4.3.2 on GitLab". 9 November 2021. Retrieved 13 December 2021.
  4. ^ "Linphone 4.7.0-alpha on GitLab".
  5. ^ "Linphone 4.4.0-beta on GitLab".
  6. ^ a b c "Linphone 4.4.0-alpha on GitLab".
  7. ^ "Linphone". Archived from the original on 2016-01-13.
  8. ^ FreeBSD port of Linphone
  9. ^ » Linphone » Licensing Archived 2013-08-15 at the Wayback Machine
  10. ^ "Linphone: VOIP softphone - open source video sip phone, voip software". Archived from the original on 2017-12-11. Retrieved 2018-08-02.
  11. ^ "LINPHONE, SIP video phone client". Archived from the original on 8 October 2014. Retrieved 1 September 2014.
  12. ^ Linphone Video, Make Phone Calls over Phone’s Internet without using Minutes
  13. ^ Linphone
  14. ^ Blog: Bye Bye Skype, Top 3 Free Replacements Archived 2011-11-27 at the Wayback Machine
  15. ^ Linphone in the Google Play Store
  16. ^ "Free Sip service". Retrieved 20 March 2019.
  17. ^ "Features". Linphone. Retrieved 2019-02-03.
  18. ^ » Features Archived 2010-07-23 at the Wayback Machine