| Developer(s) | Linphone |
|---|---|
| Stable release | 3.4.3 / March 29, 2011 |
| Written in | C |
| Platform | Windows, Linux, Mac, Android |
| License | GNU General Public License |
| Website | linphone.org |
Linphone is a VoIP application available on PCs running Linux or Windows, Apple computers running Mac OS X, and Android and iPhone mobile phones. It uses the Session Initiation Protocol (SIP) for communication and is licensed under the GNU General Public License (GPL). Linphone uses GTK+ for GUI and on Linux it can be also run as a console-mode application. It is compatible with telephony by using an Internet telephony service provider (ITSP).
Audio codec support: Speex (narrow band and wideband), G.711 (u-law, a-law), GSM, and iLBC (through an optional plugin) Video codec support: H263-1998, MPEG-4, Theora and H.264 (thanks to a plugin based on x264), with resolutions from QCIF(176x144) to SVGA(800x600) provided that network bandwidth and cpu power are sufficient.[1]